{"product_id":"wooking-z17-8u-replacement-battery-111v-4400mah-li-ion","title":"Wooking Z17-8U Replacement Battery 11.1V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWooking Z17-8U \/ K17-8U — 11.1V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 4400mAh (48.84Wh) Li-ion battery for the Clevo Z17-8U, K17-8U, and Z17 laptops. It restores portable operation when the original cell no longer holds usable charge. Voltage and connector match the stock battery on these Clevo-based systems.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eZ17-8U and K17-8U platform fit:\u003c\/strong\u003e\n    Both models share the same battery bay dimensions, 11.1V three-cell voltage rail, and connector pinout — one battery covers both. The BMS handshake protocol is identical across this Clevo chassis family.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the Z17 platform. The BMS reported correct voltage at each stage and did not trigger premature cutoff under combined CPU and display load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on Clevo systems:\u003c\/strong\u003e\n    After installing, run one full discharge to hibernate cutoff, then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell data 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\"\u003eBIOS reporting poor battery health after fitting the new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Clevo BIOS reads health data stored in the battery's EEPROM. When a new cell goes in, the EEPROM data does not match the discharge history the BIOS learned from the old battery. The system flags this mismatch as degraded health — even on a brand-new cell. Running the battery learn cycle (full discharge to hibernate, then a full uninterrupted charge) rewrites the reference data and clears the warning. After two or three full cycles the health reading normalises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop cuts off at 20–30% shown on the fuel gauge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff, not a calibration error. Under full CPU plus display load, the cell voltage drops faster than the fuel gauge IC can track — the system hits the low-voltage cutoff threshold while the gauge still shows charge remaining. The fuel gauge IC needs several full cycles against the new cell chemistry to build an accurate model. Run three complete discharge-to-hibernate and full-charge cycles, then check whether the cutoff point shifts. If the laptop still shuts down above 15% after five cycles, check that the BIOS battery charge limit setting is not capping output voltage below 11.1V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409601626202,"sku":"BWCS-CLN855NB-1","price":73.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409601658970,"sku":"BWCS-CLN855NB-2","price":86.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409601691738,"sku":"BWCS-CLN855NB-3","price":95.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CLN855NB-1.webp?v=1779580170","url":"https:\/\/batteryweb.com\/products\/wooking-z17-8u-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}