{"product_id":"emporia-active-glam-replacement-battery-37v-900mah-li-ion","title":"AK-V221 Emporia Active Glam Replacement Battery 3.7V 900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEmporia Active Glam — 3.7V Li-ion Replacement Battery (AK-V221)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 900mAh Li-ion replacement battery for the Emporia Active Glam and Active Glam 4G smartphones. It replaces OEM part numbers AK-V221 and AK-V221-4G. The cell fits the compact housing used across the V221 and V221 4G variants of this device.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eActive Glam and Active Glam 4G compatibility:\u003c\/strong\u003e\n    Both the standard and 4G variants share the same battery bay dimensions (53.50 × 40.00 × 5.00mm), connector pin-out, and BMS handshake requirements — one cell covers both boards.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell on the Active Glam 4G board and confirmed the BMS accepted charge at the correct 4.2V cutoff, with protection circuits tripping correctly on over-discharge below 2.75V.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After installation, disable fast charging and run one full discharge-to-charge cycle before normal use. The fuel gauge IC on this phone calibrates its discharge curve on the first full cycle — skipping this step causes the percentage counter to jump erratically during the first week.\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 Active Glam after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still running the discharge curve it mapped to the old, degraded cell. A fresh 900mAh cell has a steeper voltage cliff than a worn one, so the phone hits a voltage the IC interprets as empty before the actual charge is gone. The fix is a single full discharge-charge cycle with no interruptions. After that cycle, the coulomb counter re-anchors to the new cell's curve and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge during storage, and if the cell drops below approximately 2.5V the BMS enters lockout mode to prevent damage — the phone will show nothing when you press the power button. Connect the phone to a wall charger (not a PC USB port) and leave it for 20–30 minutes without pressing anything. The charge IC trickle-charges the cell back above the BMS re-enable threshold, after which the phone boots normally. If the charge indicator never appears after 45 minutes, the cell has dropped below the recovery floor and needs replacement.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391815385178,"sku":"BWCS-EAF221SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391815417946,"sku":"BWCS-EAF221SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391815450714,"sku":"BWCS-EAF221SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EAF221SL-1.webp?v=1779142222","url":"https:\/\/batteryweb.com\/products\/emporia-active-glam-replacement-battery-37v-900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}