{"product_id":"sharp-w-zero3-replacement-battery-37v-1600mah-li-ion","title":"Sharp W-ZERO3 PV-BL11 Replacement Battery 3.7V 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSharp W-ZERO3 \/ WS003SH \/ WS004SH — 3.7V Li-ion Replacement Battery (PV-BL11 \/ EA-BL12)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1600mAh Li-ion battery for the Sharp W-ZERO3 series, covering the WS003SH and WS004SH variants. It replaces OEM part numbers PV-BL11 and EA-BL12. The W-ZERO3 is a Windows Mobile smartphone, and this cell restores power to its processor, display, and wireless stack when the original cell has degraded past usable capacity.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eW-ZERO3 series compatibility:\u003c\/strong\u003e\n    The WS003SH and WS004SH share the same battery bay, connector pitch, and BMS handshake protocol — one cell covers both variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and discharge cycles on the W-ZERO3 platform. The BMS accepted the cell without fault codes, and the charge IC cycled correctly through trickle, constant-current, and constant-voltage phases.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    Disable fast charging for the first complete discharge-charge cycle after fitting this cell. The W-ZERO3 fuel gauge IC calibrates its discharge curve on that first full pass — running high current into an uncalibrated cell produces inaccurate percentage readings from the start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the W-ZERO3 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe W-ZERO3 shuts down abruptly at apparent percentages between 20% and 30% because the fuel gauge IC is still tracking the discharge curve of the old, degraded cell. A fresh cell holds a higher voltage deeper into its discharge range than the gauge expects. When the modem transmits or the display backlight peaks, current draw spikes and voltage drops faster than the gauge predicts — the BMS trips before the reported percentage hits zero. One full uninterrupted discharge-charge cycle lets the coulomb counter re-anchor to the new cell's actual curve and eliminates this behaviour.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eW-ZERO3 not powering on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge in storage, and if a replacement cell drops below approximately 2.5V per cell before installation, the BMS locks out to prevent damage — the phone shows no sign of life when you press the power button. Connect the device to a wall charger rather than a USB port; wall chargers supply consistent 5V at higher current, which is enough to push the BMS out of lockout and begin trickle charging. Leave it on the charger undisturbed for at least 30 minutes before attempting to power on. If the charge LED does not light within five minutes of connecting the charger, reseat the battery and reconnect.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405152256090,"sku":"BWCS-BL12SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405152288858,"sku":"BWCS-BL12SL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405152321626,"sku":"BWCS-BL12SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BL12SL-1.webp?v=1779370297","url":"https:\/\/batteryweb.com\/products\/sharp-w-zero3-replacement-battery-37v-1600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}