{"product_id":"wooking-s17-pro-8u-replacement-battery-15v-4200mah-li-polymer","title":"Wooking S17 Pro-8U Replacement Battery 15V 4200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWooking S17 Pro-8U — 15V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 15V, 4200mAh (63Wh) Li-Polymer replacement battery for the Wooking S17 Pro-8U laptop. It slots directly into the S17 Pro-8U and restores unplugged computing when the original cell has degraded or failed to hold charge. Voltage and connector match the original specification for this notebook.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eS17 Pro-8U platform fit:\u003c\/strong\u003e\n    The S17 Pro-8U runs a 15V charging rail with a battery management system that checks cell voltage and connector pinout at startup. This replacement matches both, so the BMS handshake completes without triggering an incompatibility error on boot.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran charge and discharge cycles on this cell and logged BMS communication throughout. The protection circuit responded correctly to full-charge cutoff and low-voltage cutoff without dropping the connection mid-session.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle reset after install:\u003c\/strong\u003e\n    After fitting this battery, run the laptop down to hibernate cutoff on battery only, then charge uninterrupted to 100%. This forces the BIOS to complete a full battery learn cycle and clears the inaccurate health warning that appears after every cell swap on the S17 Pro-8U.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting poor battery health on the S17 Pro-8U after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe S17 Pro-8U BIOS reads health data stored in the old cell's EEPROM. When a new cell is fitted, that EEPROM data is gone and the BIOS flags the battery as unknown or degraded. This is not a fault with the replacement cell — it is the system reacting to missing historical charge data. Running one full discharge-to-hibernate followed by an uninterrupted charge to 100% resets the learn cycle and the warning clears. If it does not clear after two full cycles, check BIOS firmware is current.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eS17 Pro-8U shutting down unexpectedly at 20–30% charge shown\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC has not yet calibrated against the new cell's actual charge curve. The gauge shows 25% but the cell voltage has already dropped below the BMS cutoff threshold under combined CPU and display load. The fix is two or three full discharge-to-hibernate cycles so the fuel gauge IC can map the new cell's voltage profile accurately. After calibration, the OS percentage readout and actual cutoff voltage will align — the cell should sustain voltage above 13V at the 20% mark under normal load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409594581082,"sku":"BWCS-CLA710NB-1","price":79.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409594613850,"sku":"BWCS-CLA710NB-2","price":93.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409594646618,"sku":"BWCS-CLA710NB-3","price":104.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CLA710NB-1.webp?v=1779580128","url":"https:\/\/batteryweb.com\/products\/wooking-s17-pro-8u-replacement-battery-15v-4200mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}