{"product_id":"toshiba-satellite-a80-116-replacement-battery-108v-6600mah-li-ion","title":"Toshiba Satellite A80-116 Replacement Battery 10.8V 6600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eToshiba Satellite A80-116 \/ M40-307 \/ Tecra A3-188 — 10.8V Li-ion Replacement Battery (PA3399U-2BRS)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 10.8V, 6600mAh (71.28Wh) Li-ion battery for the Toshiba Satellite A80-116 and related notebooks. It replaces OEM part numbers PA3399U-2BRS, PABAS077, PA3478U-1BRS, and related variants across the Satellite M40, M50, and Tecra A3 lines. The original cells in these machines are now well over a decade old — most no longer hold a meaningful charge.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eSatellite A80 \/ M40 \/ M50 \/ Tecra A3 platform fit:\u003c\/strong\u003e\n    These models share the same 10.8V power rail, six-cell bay format, and connector pinout. The BMS handshake protocol is consistent across the PA3399U and PA3478U part families, so the same cell works across all listed variants 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 a Satellite A80-series unit. The BMS accepted the cell immediately, charge current ramped correctly through CC and CV phases, and the protection circuit tripped at the expected low-voltage threshold without forcing a hard shutdown.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the Satellite A80:\u003c\/strong\u003e\n    After fitting, run the laptop on battery only until it reaches hibernate cutoff — do not interrupt. Then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that 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\"\u003eWhy the Satellite A80 shuts down at 20–30% remaining\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Satellite A80 cuts power when cell voltage drops below a threshold the BIOS considers unsafe — typically around 10.0V under load. With aged cells, voltage sags sharply when CPU and display draw peaks, hitting that cutoff while the fuel gauge still reads 20–30%. A new cell holds voltage flat under the same load, so the cutoff no longer triggers early. After two full calibration cycles, the gauge and actual cutoff point align correctly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting new battery health as poor immediately after swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Toshiba BIOS reads health data stored in the battery's EEPROM and compares it against internal charge history. A freshly installed cell has no charge history logged, so the BIOS flags it as degraded — this is a data gap, not a cell fault. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100%. That single cycle writes enough EEPROM data for the BIOS to re-evaluate health correctly and clear the warning.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43411622428762,"sku":"BWCS-TOM40MB-1","price":84.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43411622461530,"sku":"BWCS-TOM40MB-2","price":98.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43411622494298,"sku":"BWCS-TOM40MB-3","price":109.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TOM40MB-1.webp?v=1779581546","url":"https:\/\/batteryweb.com\/products\/toshiba-satellite-a80-116-replacement-battery-108v-6600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}