{"id":129996,"date":"2026-07-13T09:21:18","date_gmt":"2026-07-13T09:21:18","guid":{"rendered":"https:\/\/www.seeedstudio.com\/blog\/?p=129996"},"modified":"2026-07-13T09:50:18","modified_gmt":"2026-07-13T09:50:18","slug":"nrf54lm20a-low-power-deep-dive-real-measurements-on-xiao-nrf54lm20a","status":"publish","type":"post","link":"https:\/\/www.seeedstudio.com\/blog\/2026\/07\/13\/nrf54lm20a-low-power-deep-dive-real-measurements-on-xiao-nrf54lm20a\/","title":{"rendered":"nRF54LM20A Low Power Deep Dive: Real Measurements on XIAO nRF54LM20A"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"129996\" class=\"elementor elementor-129996\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fc91673 e-flex e-con-boxed e-con e-parent\" data-id=\"fc91673\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d93d60b elementor-widget elementor-widget-text-editor\" data-id=\"d93d60b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c631eabf2\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p>If you build battery-powered wearables, sensors, or smart home endpoints, &#8220;how many years will this run on a coin cell?&#8221; is usually the first real design question \u2014 not &#8220;how fast is the CPU?&#8221; <a href=\"https:\/\/www.nordicsemi.com\/Products\/nRF54LM20A\">Nordic Semiconductor&#8217;s newest SoC,<span style=\"text-decoration: underline;\"> the nRF54LM20A<\/span><\/a>, was built with exactly that question in mind.\u00a0<\/p><p>In this article, we\u2018ll <strong>look at nRF54LM20A low power performance from two angles<\/strong>: how it compares on paper to its closest siblings, <strong>the nRF54L15 and the older nRF52840<\/strong>, and \u2014 more importantly \u2014 what our own <strong>PPK2-based battery testing<\/strong> showed when we ran a nRF54LM20A-based MCU on a real lithium cell for over a week.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e2dd1f0 e-flex e-con-boxed e-con e-parent\" data-id=\"e2dd1f0\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d7509a3 elementor-widget elementor-widget-heading\" data-id=\"d7509a3\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c631ebed1\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h2 class=\"elementor-heading-title elementor-size-default\">What Makes nRF54LM20A Different?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-70c48c4 e-flex e-con-boxed e-con e-parent\" data-id=\"70c48c4\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-74d0f37 elementor-widget elementor-widget-text-editor\" data-id=\"74d0f37\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c631ecd0e\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p>The <a href=\"https:\/\/www.nordicsemi.com\/Products\/nRF54LM20A\"><span style=\"text-decoration: underline;\">nRF54LM20A<\/span><\/a> is the largest-memory member of <a href=\"https:\/\/www.nordicsemi.com\/Products\/nRF54LM20A\"><span style=\"text-decoration: underline;\">Nordic&#8217;s nRF54L Series<\/span><\/a>, built on a 22 nm low-leakage process specifically to push down sleep current while adding more compute headroom than the older <a href=\"https:\/\/www.nordicsemi.com\/search?query=nrf52\"><span style=\"text-decoration: underline;\">nRF52 Series<\/span><\/a>. It pairs a 128 MHz Arm Cortex-M33 with a RISC-V coprocessor that can handle simple peripheral tasks without waking the main core at all \u2014 a big part of how it keeps average current so low in real applications.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-13b4f1b e-flex e-con-boxed e-con e-parent\" data-id=\"13b4f1b\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-21f0e96 elementor-widget elementor-widget-heading\" data-id=\"21f0e96\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c631edacb\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h4 class=\"elementor-heading-title elementor-size-default\">nRF54LM20A vs nRF54L15 vs nRF52840: the spec comparison<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-35e906d e-flex e-con-boxed e-con e-parent\" data-id=\"35e906d\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0617ec1 elementor-widget elementor-widget-elementskit-tablepress\" data-id=\"0617ec1\" data-element_type=\"widget\" data-widget_type=\"elementskit-tablepress.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c631f11a4\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><div class=\"elemenetskit-tablepress ekit-wid-con\" id=\"ekit_tablepress_0617ec1\">\n<table id=\"tablepress-49\" class=\"tablepress tablepress-id-49\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\"><\/th><th class=\"column-2\"><strong>nRF54LM20A<\/strong><\/th><th class=\"column-3\"><strong>nRF54L15<\/strong><\/th><th class=\"column-4\"><strong>nRF52840<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">CPU<\/td><td class=\"column-2\">128 MHz Cortex-M33<\/td><td class=\"column-3\">128 MHz Cortex-M33<\/td><td class=\"column-4\">64 MHz Cortex-M4F<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">Coprocessor<\/td><td class=\"column-2\">RISC-V (FLPR)<\/td><td class=\"column-3\">RISC-V (FLPR)<\/td><td class=\"column-4\">\/<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">NVM \/ RAM<\/td><td class=\"column-2\">2 MB \/ 512 KB<\/td><td class=\"column-3\">1.5 MB \/ 256 KB<\/td><td class=\"column-4\">1 MB \/ 256 KB<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">GPIO<\/td><td class=\"column-2\">up to 66<\/td><td class=\"column-3\">up to 42<\/td><td class=\"column-4\">up to 48<\/td>\n<\/tr>\n<tr class=\"row-6\">\n\t<td class=\"column-1\">Process node<\/td><td class=\"column-2\">22 nm low-leakage<\/td><td class=\"column-3\">22 nm low-leakage<\/td><td class=\"column-4\">40 nm<\/td>\n<\/tr>\n<tr class=\"row-7\">\n\t<td class=\"column-1\">System OFF current<\/td><td class=\"column-2\">0.7 \u00b5A \/ 1.0 \u00b5A with GRTC wake<\/td><td class=\"column-3\">~0.7\u20130.9 \u00b5A (GRTC wake)<\/td><td class=\"column-4\">0.4 \u00b5A (no RAM retention)<\/td>\n<\/tr>\n<tr class=\"row-8\">\n\t<td class=\"column-1\">System ON idle<\/td><td class=\"column-2\">4.3 \u00b5A (512 KB RAM + GRTC)<\/td><td class=\"column-3\">~1.5 \u00b5A<\/td><td class=\"column-4\">~1\u20133 \u00b5A<\/td>\n<\/tr>\n<tr class=\"row-9\">\n\t<td class=\"column-1\">BLE version<\/td><td class=\"column-2\">Bluetooth 6.0, Channel Sounding<\/td><td class=\"column-3\">Bluetooth 6.0, Channel Sounding<\/td><td class=\"column-4\">Bluetooth 5<\/td>\n<\/tr>\n<tr class=\"row-10\">\n\t<td class=\"column-1\">High-speed USB<\/td><td class=\"column-2\">YES<\/td><td class=\"column-3\">NO<\/td><td class=\"column-4\">NO<\/td>\n<\/tr>\n<tr class=\"row-11\">\n\t<td class=\"column-1\">Protocols<\/td><td class=\"column-2\">BLE, Matter, Thread, Zigbee, Wi-Fi via nRF70<\/td><td class=\"column-3\">BLE, Matter, Thread, Zigbee<\/td><td class=\"column-4\">BLE, 802.15.4, ANT<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-49 from cache --><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-719941c e-flex e-con-boxed e-con e-parent\" data-id=\"719941c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-ef3c599 elementor-widget elementor-widget-text-editor\" data-id=\"ef3c599\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c631f2084\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p style=\"text-align: right;\"><em>Sources: <a href=\"https:\/\/nsscprodmedia.blob.core.windows.net\/prod\/software-and-other-downloads\/product-briefs\/nrf52840-soc-product-brief.pdf\" class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\">nRF52840 Product Brief<\/a>, <a href=\"https:\/\/www.nordicsemi.com\/Products\/nRF54L15\" class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\">nRF54L15 product page<\/a>, <a href=\"https:\/\/www.nordicsemi.com\/Products\/nRF54LM20A\" class=\"underline underline underline-offset-2 decoration-1 decoration-current\/40 hover:decoration-current focus:decoration-current\">nRF54LM20A\/nRF54LM20B Datasheet v1.0<\/a>.<\/em><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-62894a4 e-flex e-con-boxed e-con e-parent\" data-id=\"62894a4\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-66e708b elementor-widget elementor-widget-text-editor\" data-id=\"66e708b\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c631f2e1b\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p>A few things stand out here. First, raw System OFF current on paper actually looks similar across the whole nRF54L family and even close to the old nRF52840 in its most stripped-down mode \u2014 but that nRF52840 number requires giving up RAM retention entirely, which most real applications can&#8217;t afford. With RAM retained, nRF52840 climbs to roughly 1.9 \u00b5A, while the nRF54LM20A holds a full 512 KB of RAM and still sleeps at sub-\u00b5A to low-single-digit-\u00b5A current.<\/p><p>Second, the nRF54LM20A is the &#8220;biggest&#8221; chip in the nRF54L family: more flash, more RAM, more GPIO, and the only member with high-speed USB \u2014 useful if your low-power product still needs fast firmware updates or audio\/IMU streaming during development. If your design needs the extra memory or pin count of the LM20A but not the higher price or complexity, the nRF54L15 remains the leaner option in the same low-power family, and the nRF52840 is still relevant for teams with existing Bluetooth 5 code they don&#8217;t want to re-port yet.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7fd14a3 e-flex e-con-boxed e-con e-parent\" data-id=\"7fd14a3\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-018b087 elementor-widget elementor-widget-heading\" data-id=\"018b087\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c631f3bdb\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h2 class=\"elementor-heading-title elementor-size-default\">The Real Question: What Does It Actually Draw In A Finished Product?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-76b1e6c e-flex e-con-boxed e-con e-parent\" data-id=\"76b1e6c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0ed21f4 elementor-widget elementor-widget-text-editor\" data-id=\"0ed21f4\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c63200752\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p>Datasheet numbers describe the silicon in isolation. What developers actually need to know is the<strong> system-level current once a PMIC, external flash, sensors, and a real firmware wake\/sleep cycle are involved<\/strong>. So we put a <a href=\"https:\/\/www.seeedstudio.com\/Seeed-Studio-XIAO-nRF54LM20A-Sense-p-6840.html\"><span style=\"text-decoration: underline; color: #99cc00;\">XIAO nRF54LM20A Sense <\/span><\/a>through exactly that test.<\/p><p>On the<span style=\"color: #333333;\"> Seeed Studio XIAO nRF54LM20A (Series)<\/span> itself, we <a href=\"https:\/\/www.seeedstudio.com\/blog\/2026\/06\/30\/meet-xiao-nrf54lm20a-sense-motion-wake-up-always-connected-built-for-ultra-low-power\/\"><span style=\"text-decoration: underline;\">paired the SoC with Nordic&#8217;s nPM1300 PMIC<\/span> and <span style=\"text-decoration: underline;\">followed Nordic&#8217;s reference EVB power design closely<\/span><\/a>, which is why the measured numbers below track close to Nordic&#8217;s own datasheet figures rather than diverging the way many third-party boards do.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f1b229a e-flex e-con-boxed e-con e-parent\" data-id=\"f1b229a\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-46ae250 elementor-widget elementor-widget-heading\" data-id=\"46ae250\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c63201521\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h4 class=\"elementor-heading-title elementor-size-default\">First attempt: multi-day battery logging\n\n<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e008112 e-flex e-con-boxed e-con e-parent\" data-id=\"e008112\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-16d9ded elementor-widget elementor-widget-text-editor\" data-id=\"16d9ded\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c6320231f\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p>Our first approach was to power a XIAO nRF54LM20A from a real lithium cell and log continuously for days at a time, waking it on demand via a GPIO interrupt from the Boot button. But readings came in higher than expected, and it wasn&#8217;t obvious at first whether that was the SoC, the board, or the measurement setup itself.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-695c636 e-flex e-con-boxed e-con e-parent\" data-id=\"695c636\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-8f346ea e-con-full e-flex e-con e-child\" data-id=\"8f346ea\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-685e175 elementor-widget elementor-widget-image\" data-id=\"685e175\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c63205528\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"640\" height=\"853\" src=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212p_d8d9c99c-d33a-43d0-83f9-a664cd2a4dfg-773x1030.jpg\" class=\"attachment-large size-large wp-image-130058\" alt=\"\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212p_d8d9c99c-d33a-43d0-83f9-a664cd2a4dfg-773x1030.jpg 773w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212p_d8d9c99c-d33a-43d0-83f9-a664cd2a4dfg-225x300.jpg 225w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212p_d8d9c99c-d33a-43d0-83f9-a664cd2a4dfg-768x1024.jpg 768w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212p_d8d9c99c-d33a-43d0-83f9-a664cd2a4dfg-24x32.jpg 24w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212p_d8d9c99c-d33a-43d0-83f9-a664cd2a4dfg-1024x1365.jpg 1024w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212p_d8d9c99c-d33a-43d0-83f9-a664cd2a4dfg.jpg 1080w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8d1c3e5 e-con-full e-flex e-con e-child\" data-id=\"8d1c3e5\" data-element_type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-454d4f6 elementor-widget elementor-widget-image\" data-id=\"454d4f6\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c63206f36\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"640\" height=\"853\" src=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212o_f25e9caf-be0f-43e5-a52d-8007b369f28g-773x1030.jpg\" class=\"attachment-large size-large wp-image-130063\" alt=\"\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212o_f25e9caf-be0f-43e5-a52d-8007b369f28g-773x1030.jpg 773w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212o_f25e9caf-be0f-43e5-a52d-8007b369f28g-225x300.jpg 225w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212o_f25e9caf-be0f-43e5-a52d-8007b369f28g-768x1024.jpg 768w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212o_f25e9caf-be0f-43e5-a52d-8007b369f28g-24x32.jpg 24w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212o_f25e9caf-be0f-43e5-a52d-8007b369f28g-1024x1365.jpg 1024w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/img_v3_0212o_f25e9caf-be0f-43e5-a52d-8007b369f28g.jpg 1080w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e3e0c63 e-flex e-con-boxed e-con e-parent\" data-id=\"e3e0c63\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-dc89812 elementor-widget elementor-widget-heading\" data-id=\"dc89812\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c6320824e\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h4 class=\"elementor-heading-title elementor-size-default\">Diagnosing the gap<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-134a8ab e-flex e-con-boxed e-con e-parent\" data-id=\"134a8ab\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c84be04 elementor-widget elementor-widget-text-editor\" data-id=\"c84be04\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c6320975e\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p>Digging into it with the SE and EE teams, two variables turned out to be the keys:<\/p><ul><li><strong>Sample rate.<\/strong> At 1 sample\/second, the PPK2 was too coarse to resolve the actual current floor \u2014 it visibly smoothed over the real behavior and masked the true low-power state.\u00a0<\/li><li><strong>Voltage source.<\/strong> A battery and a PPK2-simulated &#8220;Source meter&#8221; supply at the same nominal voltage don&#8217;t read identically, because the simulated source holds a perfectly regulated rail while a battery has internal resistance and minor sag.<\/li><\/ul><p>To isolate the two variables, we ran the same firmware across four configurations (same board, same build) and compared the results directly:<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-482baf6 e-flex e-con-boxed e-con e-parent\" data-id=\"482baf6\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d1bc58f elementor-widget elementor-widget-elementskit-tablepress\" data-id=\"d1bc58f\" data-element_type=\"widget\" data-widget_type=\"elementskit-tablepress.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c6320b47d\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><div class=\"elemenetskit-tablepress ekit-wid-con\" id=\"ekit_tablepress_d1bc58f\">\n<table id=\"tablepress-52\" class=\"tablepress tablepress-id-52\">\n<thead>\n<tr class=\"row-1\">\n\t<th class=\"column-1\">Power source<\/th><th class=\"column-2\">Sample rate<\/th><th class=\"column-3\">Measured current<\/th>\n<\/tr>\n<\/thead>\n<tbody class=\"row-striping row-hover\">\n<tr class=\"row-2\">\n\t<td class=\"column-1\">Li-ion battery, 4.12 V<\/td><td class=\"column-2\">10 Hz<\/td><td class=\"column-3\">5.47 \u00b5A<\/td>\n<\/tr>\n<tr class=\"row-3\">\n\t<td class=\"column-1\">Li-ion battery, 4.12 V<\/td><td class=\"column-2\">100,000 Hz<\/td><td class=\"column-3\">5.27 \u00b5A<\/td>\n<\/tr>\n<tr class=\"row-4\">\n\t<td class=\"column-1\">PPK2 simulated source, 4.12 V<\/td><td class=\"column-2\">100,000 Hz<\/td><td class=\"column-3\">5.22 \u00b5A<\/td>\n<\/tr>\n<tr class=\"row-5\">\n\t<td class=\"column-1\">PPK2 simulated source, 4.12 V<\/td><td class=\"column-2\">100,000 Hz<\/td><td class=\"column-3\">4.93 \u00b5A<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<!-- #tablepress-52 from cache --><\/div>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-479a2d7 e-flex e-con-boxed e-con e-parent\" data-id=\"479a2d7\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fa03929 elementor-widget elementor-widget-heading\" data-id=\"fa03929\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c6320c2d8\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h4 class=\"elementor-heading-title elementor-size-default\">The result<\/h4>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fc61952 e-flex e-con-boxed e-con e-parent\" data-id=\"fc61952\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b890220 elementor-widget elementor-widget-text-editor\" data-id=\"b890220\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c6320d069\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p>The board achieved a <strong>System OFF current as low as 4.93 \u03bcA<\/strong> when powered by a 3.7 V Li-ion battery.\u00a0<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2e14f6c e-flex e-con-boxed e-con e-parent\" data-id=\"2e14f6c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-79a6539 elementor-widget elementor-widget-image\" data-id=\"79a6539\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c6320e00f\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"2540\" height=\"1474\" src=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/06\/20260625-163540.jpg\" class=\"attachment-full size-full wp-image-129633\" alt=\"\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/06\/20260625-163540.jpg 2540w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/06\/20260625-163540-300x174.jpg 300w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/06\/20260625-163540-1030x598.jpg 1030w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/06\/20260625-163540-768x446.jpg 768w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/06\/20260625-163540-1536x891.jpg 1536w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/06\/20260625-163540-2048x1188.jpg 2048w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/06\/20260625-163540-32x19.jpg 32w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/06\/20260625-163540-1024x594.jpg 1024w\" sizes=\"(max-width: 2540px) 100vw, 2540px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">XIAO nRF54LM20A System OFF current measurement, 4.93 microamps at 3.7V<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-15ed474 e-flex e-con-boxed e-con e-parent\" data-id=\"15ed474\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1e2b219 elementor-widget elementor-widget-heading\" data-id=\"1e2b219\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c6320ed62\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h2 class=\"elementor-heading-title elementor-size-default\">Independent Community Confirmation<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-dd4bbfc e-flex e-con-boxed e-con e-parent\" data-id=\"dd4bbfc\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b4b527f elementor-widget elementor-widget-text-editor\" data-id=\"b4b527f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c6320fb5e\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p>We&#8217;re not the only ones who&#8217;ve put a meter on this board. Developer &#8220;<strong>msfujino<\/strong>&#8221; on the Seeed Studio forum<span style=\"text-decoration: underline;\"><a href=\"https:\/\/forum.seeedstudio.com\/t\/sleep-current-of-the-xiao-nrf54lm20a-using-the-built-in-npm1300\/295544\"> ran their own measurements<\/a><\/span> of the nPM1300&#8217;s low-power states on the XIAO nRF54LM20A and reported <strong>0.5 \u00b5A in Hibernate Mode and 0.3 \u00b5A in Ship Mode<\/strong> (the community nrf54-arduino-core BSP rather than the nRF Connect SDK).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-7380b4a e-flex e-con-boxed e-con e-parent\" data-id=\"7380b4a\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b837445 elementor-widget elementor-widget-image\" data-id=\"b837445\" data-element_type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c63211edb\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1316\" height=\"534\" src=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/v09213SipHib.jpg\" class=\"attachment-full size-full wp-image-130088\" alt=\"\" srcset=\"https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/v09213SipHib.jpg 1316w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/v09213SipHib-300x122.jpg 300w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/v09213SipHib-1030x418.jpg 1030w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/v09213SipHib-768x312.jpg 768w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/v09213SipHib-32x13.jpg 32w, https:\/\/www.seeedstudio.com\/blog\/wp-content\/uploads\/2026\/07\/v09213SipHib-1024x416.jpg 1024w\" sizes=\"(max-width: 1316px) 100vw, 1316px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-2ae639f e-flex e-con-boxed e-con e-parent\" data-id=\"2ae639f\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0591105 elementor-widget elementor-widget-text-editor\" data-id=\"0591105\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c63212dec\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p>If you want to build your own battery-reporting node rather than just measure sleep current, the <a href=\"https:\/\/www.youtube.com\/watch?v=e54ykCwQmPM\"><strong>xiao-nrf54-battery-thread-coap project<\/strong><\/a> is a useful reference: it&#8217;s a Zephyr example that reads battery voltage\/ current from the nPM1300 fuel-gauge-style sensor API on the XIAO nRF54LM20A (and via ADC on the XIAO nRF54L15) and reports it over Thread\/CoAP to an nRF54L15 DK border router.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-fa0b2f7 e-flex e-con-boxed e-con e-parent\" data-id=\"fa0b2f7\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-1c1ec79 elementor-widget elementor-widget-video\" data-id=\"1c1ec79\" data-element_type=\"widget\" data-settings=\"{&quot;youtube_url&quot;:&quot;https:\\\/\\\/www.youtube.com\\\/watch?v=e54ykCwQmPM&quot;,&quot;video_type&quot;:&quot;youtube&quot;,&quot;controls&quot;:&quot;yes&quot;}\" data-widget_type=\"video.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c63214300\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t<div class=\"elementor-wrapper elementor-open-inline\">\n\t\t\t<div class=\"elementor-video\"><\/div>\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5d5823c e-flex e-con-boxed e-con e-parent\" data-id=\"5d5823c\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b4ae978 elementor-widget elementor-widget-heading\" data-id=\"b4ae978\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c63215111\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h2 class=\"elementor-heading-title elementor-size-default\">What This Means for Battery Life<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-066cf23 e-flex e-con-boxed e-con e-parent\" data-id=\"066cf23\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3340738 elementor-widget elementor-widget-text-editor\" data-id=\"3340738\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c63215eb0\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p>At a 4.93 \u00b5A System OFF current, a 1080 mAh cell has, in theory, well over a decade of runway before self-discharge and cell aging \u2014 not raw current draw \u2014 become the limiting factor. For a device that mostly sleeps and wakes briefly on user interaction (a smart lock keypad, an asset tag, a wearable button), the nRF54LM20A&#8217;s sleep current is no longer the bottleneck in the system; battery chemistry and shelf life become the constraint instead. That&#8217;s a meaningful shift for anyone doing battery-life math for a new product.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-ed96bb9 e-flex e-con-boxed e-con e-parent\" data-id=\"ed96bb9\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-49cc802 elementor-widget elementor-widget-heading\" data-id=\"49cc802\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c63216c24\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span><h2 class=\"elementor-heading-title elementor-size-default\">Resource<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-4061720 e-flex e-con-boxed e-con e-parent\" data-id=\"4061720\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-880ee73 elementor-widget elementor-widget-text-editor\" data-id=\"880ee73\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<span id=\"scroll6a54c63217a3c\"  class=\"scrollMagicControl\" type=\"hidden\" effect = {} wpmp_enable_desktop=\"yes\" wpmp_enable_tablet=\"yes\" wpmp_enable_mobile=\"yes\" wpmp_trigger_hook=\"0.5\" wpmp_reverse=\"yes\" wpmp_class_CSS =\"custom\" split-text = {} value=\"scrollmagic\"><\/span>\t\t\t\t<p>If you want to reproduce this kind of test or start building on the SoC, these are good next stops:<\/p><ul><li><em><a href=\"https:\/\/wiki.seeedstudio.com\/xiao_nrf54lm20a_getting_started\/\"><span style=\"color: #99cc00;\">XIAO nRF54LM20A (Sense) getting-started guide<\/span><\/a><\/em> \u2014 Seeed Studio Wiki<\/li><li><a href=\"https:\/\/www.nordicsemi.com\/Products\/nRF54LM20A\"><em>nRF54LM20A SoC Datasheet <\/em><\/a>\u2014 Nordic Semiconductor<\/li><li><a href=\"https:\/\/docs.zephyrproject.org\/latest\/boards\/seeed\/xiao_nrf54lm20a\/doc\/index.html\"><em>Zephyr board documentation for xiao_nrf54lm20a<\/em><\/a><\/li><li><em><a href=\"https:\/\/www.seeedstudio.com\/Seeed-Studio-XIAO-nRF54LM20A-p-6841.html\"><span style=\"color: #99cc00;\">XIAO nRF54LM20A (Sense)<\/span><\/a><\/em> on Seeed Studio Bazaar<\/li><li><em><a href=\"https:\/\/www.seeedstudio.com\/XIAO-nRF54L15-p-6493.html\"><span style=\"color: #99cc00;\">XIAO nRF54L15<\/span> <\/a><\/em>on Seeed Studio Bazaar<\/li><\/ul>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>If you build battery-powered wearables, sensors, or smart home endpoints, &#8220;how many years will this<\/p>\n","protected":false},"author":3614,"featured_media":129633,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_lmt_disableupdate":"","_lmt_disable":"","_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"iawp_total_views":0,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-129996","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>nRF54LM20A Low Power: XIAO Test Data vs nRF54L15\/52840<\/title>\n<meta name=\"description\" content=\"We measured the XIAO nRF54LM20A&#039;s System OFF current at 4.93\u00b5A and compared it to the nRF54L15 and nRF52840. 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