{"product_id":"infinix-zero-3-replacement-battery-385v-3000mah-li-polymer","title":"Infinix Zero 3 BL-30iX Replacement Battery 3.85V 3000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eInfinix Zero 3 X552 — 3.85V Li-Polymer Replacement Battery (BL-30iX)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3000mAh Li-Polymer cell at 3.85V (11.55Wh) for the Infinix Zero 3 (X552) smartphone. It replaces the original BL-30iX when the installed cell no longer holds charge through a normal day. Dimensions are 77.40 × 64.80 × 3.80mm — measure your bay before ordering if your unit has been repaired before.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eZero 3 \/ X552 fitment:\u003c\/strong\u003e\n    Both model designations refer to the same hardware revision. They share an identical battery bay geometry, connector pitch, and BMS handshake protocol — one cell covers both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the Zero 3 platform. The BMS accepted the cell without rejection flags, and the charge IC stepped through CC\/CV phases cleanly to a full 3000mAh acceptance.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one complete discharge-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into 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 replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-Polymer cell has a slightly different voltage-versus-capacity curve than the aged cell it replaces. The fuel gauge IC still uses the old cell's curve as its reference. When the phone hits a load spike — modem switching bands, screen at full brightness — the actual cell voltage drops below the IC's shutdown threshold even though the displayed percentage reads 20–30%. The fix is one full unconstrained discharge down to auto-off, then a full uninterrupted charge. After that cycle, the coulomb counter resets its reference to the new cell and the reported percentage tracks accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDevice won't power on after sitting in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge at roughly 2–3% per month. A replacement cell stored in a warehouse for an extended period can fall below 2.5V per cell — the threshold at which the BMS locks out to prevent damage. The phone will show no charging animation and will not respond to the power button. Connect a known-good charger and leave it undisturbed for 15–20 minutes; the charge IC trickle-charges the cell from the locked-out state until the BMS re-enables at approximately 3.0V, at which point normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391988531290,"sku":"BWCS-FNX552SL-1","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391988564058,"sku":"BWCS-FNX552SL-2","price":28.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391988596826,"sku":"BWCS-FNX552SL-3","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FNX552SL-1.webp?v=1779142762","url":"https:\/\/batteryweb.com\/products\/infinix-zero-3-replacement-battery-385v-3000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}