{"product_id":"acer-extensa-5635z-replacement-battery-111v-4400mah-li-ion","title":"Acer Extensa 5635Z Replacement Battery 11.1V 4400mAh AS09C31","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAcer Extensa 5635Z Series — 11.1V Li-ion Replacement Battery (AS09C31)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 11.1V 4400mAh (48.84Wh) Li-ion battery replaces the original cell in the Acer Extensa 5635Z and its 422G16Mn, 432G16Mn, and 432G25Mn variants. It cross-references OEM part numbers AS09C31, AS09C70, AS09C71, AS09C75, BT.00605.022, GRAPE32, LC.BTP00.005, LC.BTP00.011, LC.BTP00.066, and TM00741. Physical dimensions are 203.65 × 48.00 × 27.11mm — verify before ordering if your chassis differs.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eExtensa 5635Z platform fit:\u003c\/strong\u003e\n    These models share a common 11.1V three-cell rail, identical connector pinout, and the same BMS handshake protocol — which is why one cell covers the full 5635Z sub-range without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the 5635Z platform. The BMS negotiated correctly on first insertion, charge termination triggered cleanly at 12.6V, and no protection trips occurred during load testing across CPU-plus-display draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on the 5635Z:\u003c\/strong\u003e\n    After installing, run one full discharge until the laptop hibernates, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that typically appears after every cell swap on this platform.\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 immediately after replacement\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Extensa 5635Z BIOS reads EEPROM data carried over from the old cell and flags the new battery as degraded before it has completed a single cycle. This is a data mismatch, not a fault with the replacement cell. Run one full discharge-to-hibernate followed by an uninterrupted charge to 100% — the BIOS battery learn cycle rewrites its reference values against the new chemistry. After two to three cycles the health indicator normalises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC is still calibrated to the old cell's discharge curve. Under combined CPU and display load, actual cell voltage drops below the protection threshold before the OS gauge reaches 0% — the BMS cuts power to prevent over-discharge. The gauge and the real voltage are out of sync. Force a full discharge to hibernate-cutoff, then charge fully to 100%; repeat for two cycles until the gauge tracks actual cell voltage accurately, typically from around 11.1V down to the 9.0V cutoff.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410798018650,"sku":"BWCS-AC5634NB-1","price":68.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410798051418,"sku":"BWCS-AC5634NB-2","price":80.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410798084186,"sku":"BWCS-AC5634NB-3","price":88.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AC5634NB-1.webp?v=1779581141","url":"https:\/\/batteryweb.com\/products\/acer-extensa-5635z-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}