{"product_id":"lenovo-thinkbook-16p-g3-arh-21ek000cru-replacement-battery-1536v-4550mah-li-polymer","title":"Lenovo ThinkBook 16p G3 Replacement Battery 15.36V 4550mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLenovo ThinkBook 16p G3 ARH — 15.36V Li-Polymer Replacement Battery (5B11C04256)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 15.36V, 4550mAh (69.89Wh) Li-Polymer battery for the Lenovo ThinkBook 16p G3 ARH 21EK000CRU and compatible ThinkBook and Legion Slim 7 models. It replaces OEM part numbers 5B11C04256, L20L4PD3, L20M4PD3, and related variants. The cell fits the five-wire connector and BMS handshake used across the G2 ACH and G3 ARH chassis.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eThinkBook G2\/G3 and Legion Slim 7 platform fit:\u003c\/strong\u003e\n    These models share the same 15.36V four-cell architecture, connector pinout, and BMS communication protocol. One cell covers the entire platform without any hardware modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on a ThinkBook 16p G3 chassis. The BMS handshook within two minutes, BIOS recognised the cell as present, and charge current stepped correctly from bulk to taper phase without triggering a fault code.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBIOS learn cycle after swap:\u003c\/strong\u003e\n    After fitting, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after every cell replacement on these ThinkBook models.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting battery health as poor after replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe ThinkBook BIOS reads health state from EEPROM data embedded in the battery's BMS chip. A new cell carries factory EEPROM values that do not match the charge history the BIOS expects from the original unit. This triggers a \"poor health\" or \"replace battery\" flag even though the cell is new. Run the full discharge-to-hibernate, then charge-to-100% cycle once. After that cycle completes, the BIOS recalculates health against actual measured capacity and the warning clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shutting down at 20–30% shown on the fuel gauge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC has not yet calibrated its discharge curve against the new cell's chemistry. The IC maps voltage to percentage using data from the old cell, so it misreads the voltage cliff on the new one. Under full CPU plus display load, the cell voltage drops sharply below 14.0V before the gauge registers zero, and the BIOS triggers an emergency shutdown. Run two full discharge-to-charge cycles and the fuel gauge IC recalibrates — the premature shutdown stops once it correctly tracks the new cell's voltage curve.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409571971162,"sku":"BWCS-LVT163NB-1","price":96.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409572003930,"sku":"BWCS-LVT163NB-2","price":112.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409572036698,"sku":"BWCS-LVT163NB-3","price":125.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVT163NB-1.webp?v=1779580092","url":"https:\/\/batteryweb.com\/products\/lenovo-thinkbook-16p-g3-arh-21ek000cru-replacement-battery-1536v-4550mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}