{"product_id":"winbook-w200-replacement-battery-148v-2200mah-li-ion","title":"WinBook W200 Replacement Battery 14.8V 2200mAh 40011708","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eWinBook W200 \/ W235 — 14.8V Li-ion Replacement Battery (40011708)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V, 2200mAh (32.56Wh) Li-ion battery for the WinBook W200 and W235 notebook computers. It replaces OEM part numbers 40011708, BP-8011, and the full 442685400xxx series. Install it when the original cell no longer holds a usable charge or the laptop won't run unplugged.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eW200 and W235 compatibility:\u003c\/strong\u003e\n    Both models share the same 14.8V battery rail, connector pinout, and BMS communication protocol. One cell fits both without any adapter or firmware workaround.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through charge, full-load discharge, and BMS trip conditions on W200 hardware. The protection circuit responded correctly to over-discharge and over-current events at each stage.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on the W200:\u003c\/strong\u003e\n    After fitting this cell, run the laptop on battery until it hibernates at low charge, then charge it uninterrupted to 100%. This gives the BIOS fuel gauge IC a reference curve against the new cell and clears the false \"poor health\" flag that appears after every cell swap.\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 fitting the new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe W200 BIOS reads health data from EEPROM registers on the battery's protection board. When a new cell arrives, those registers haven't been written by this specific laptop's charge controller yet. The BIOS compares the stored cycle count and capacity data against its own records and flags a mismatch as poor health. One full discharge-to-hibernate followed by an uninterrupted charge to 100% lets the controller rewrite the registers and clear the warning.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage-cliff problem, not a fuel gauge error. Under combined CPU and display load, the cell voltage drops faster than the OS gauge tracks — the laptop hits the BMS low-voltage cutoff while the screen still reads 20–25%. The fuel gauge IC needs two or three full calibration cycles before its discharge curve matches the new cell's actual voltage profile. Run the battery down to hibernate cutoff, charge fully to 100%, and repeat — the shutdowns move progressively later in the discharge curve as calibration improves.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410832326746,"sku":"BWCS-AC8011NB-1","price":63.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43410832359514,"sku":"BWCS-AC8011NB-2","price":74.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43410832392282,"sku":"BWCS-AC8011NB-3","price":81.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AC8011NB-big.webp?v=1779581285","url":"https:\/\/batteryweb.com\/products\/winbook-w200-replacement-battery-148v-2200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}