{"product_id":"amoi-al-001-replacement-battery-37v-750mah-li-ion","title":"AMOI AL-001 Replacement Battery 3.7V 750mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAMOI AL-001 — 3.7V Li-ion Replacement Battery (AL-001)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 750mAh Li-ion cell replaces the original battery in the AMOI AL-001 candybar mobile phone. It fits the AL-001 directly, restoring power to devices where the original cell no longer holds a usable charge. Capacity is 750mAh (2.78Wh), matching the stock specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAL-001 platform fit:\u003c\/strong\u003e\n    The AL-001 uses a slim 4.51mm cell with a specific contact layout. This replacement matches that footprint at 52.05 × 38.39 × 4.51mm, so the connector seats correctly and the battery door closes without modification.\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 AL-001 platform. The BMS accepted charge from the handset's onboard charge IC without tripping a fault, and protection thresholds fired correctly at the low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    After installing a new cell, run one full discharge down to automatic shutdown, then charge to 100% uninterrupted. The AL-001's fuel gauge IC needs that full sweep to map its coulomb counter to the new cell's actual discharge curve.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the AL-001 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe AL-001 uses a fuel gauge IC that stores a learned discharge curve from the previous cell. When you install a fresh 750mAh cell, the IC is still referencing the old degraded curve, so the percentage readout is inaccurate from the first boot. This mismatch causes the phone to show 50% while the actual cell voltage is much higher, or to report full charge before the cell has actually reached 4.2V. One complete discharge-to-shutdown followed by a full uninterrupted charge resets the coulomb counter and brings the percentage display in line with real cell state.\u003c\/p\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\"\u003eThis happens when the cell voltage drops below the modem's minimum operating threshold under transmission load, even though the fuel gauge still reads 20–30% remaining. On a fresh cell that hasn't been calibrated, the IC doesn't yet know where the voltage cliff sits on this specific cell's curve. The phone cuts out because the processor loses stable voltage, not because the battery is faulty. After one full calibration cycle, the fuel gauge maps that cliff correctly and begins warning at the right percentage — typically when cell voltage falls to around 3.5V under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405097336922,"sku":"BWCS-AME001SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405097369690,"sku":"BWCS-AME001SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405097402458,"sku":"BWCS-AME001SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-AME001SL_1.webp?v=1779369955","url":"https:\/\/batteryweb.com\/products\/amoi-al-001-replacement-battery-37v-750mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}