{"product_id":"lenovo-a330e-replacement-battery-37v-1900mah-li-ion","title":"Lenovo A330E Compatible Battery BL239 3.7V 1900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eLenovo A330E \/ A399 \/ A3500 Series — 3.7V Li-ion Replacement Battery (BL239)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1900mAh Li-ion cell replacing the OEM BL239 battery. It fits the Lenovo A330E, A399, A3500, and A3500-HV smartphones. Voltage and capacity match the original spec exactly — no modifications needed to install it.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA330E \/ A399 \/ A3500 platform fit:\u003c\/strong\u003e\n    All four models share the same battery bay dimensions, 3.7V nominal voltage rail, and BL239 connector pinout. The BMS handshake protocol is consistent across the series, so the fuel gauge IC on each device reads this cell without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on an A3500 unit and monitored BMS communication throughout charge and discharge. The protection circuit engaged correctly at low-voltage cutoff, and the charge IC accepted the cell without triggering an incompatibility error.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after swap:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge-to-charge cycle. This lets the fuel gauge IC build an accurate discharge curve against the new cell before high-current charging begins on an uncalibrated coulomb counter.\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 A330E after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA fresh cell has a slightly different voltage-discharge curve than the depleted original it replaced. The A330E's fuel gauge IC still holds the old curve in memory and misjudges remaining capacity. When the modem or display draws a current spike, the cell voltage dips below the BMS cutoff threshold — even though the percentage shown looks safe. The fix is one full uninterrupted discharge down to auto-shutoff, then a full charge without interruption, which forces the coulomb counter to resync to the new cell's actual curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone reports wrong battery percentage after BL239 replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on these Lenovo devices calibrates its percentage readout against charge and discharge history stored from the old cell. A new cell resets that baseline, so percentage readings can jump, stall, or read 100% well before a full charge completes. This is not a faulty cell — it is the coulomb counter working from stale data. Run two full discharge-charge cycles with the screen on and no charge interruptions; by the end of the second cycle the IC recalibrates and percentage tracking stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392032735322,"sku":"BWCS-LVA330SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392032768090,"sku":"BWCS-LVA330SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392032800858,"sku":"BWCS-LVA330SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-LVA330SL-1.webp?v=1779143030","url":"https:\/\/batteryweb.com\/products\/lenovo-a330e-replacement-battery-37v-1900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}