{"product_id":"emporia-talksmart-replacement-battery-37v-1450mah-li-ion","title":"Emporia AK-V800 TALKsmart Replacement Battery 3.7V 1450mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEmporia TALKsmart — 3.7V Li-ion Replacement Battery (AK-V800)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1450mAh Li-ion battery for the Emporia TALKsmart (V800, V800_001). It replaces part number AK-V800 directly. The cell restores power to calls, messaging, and standard phone functions after the original battery has degraded.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eTALKsmart \/ V800 platform fit:\u003c\/strong\u003e\n    The V800 and V800_001 share the same battery bay geometry, connector pinout, 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 cycled this cell on a V800 unit and confirmed the BMS accepted the charge curve without fault codes, and the charge IC completed a full cycle to 4.2V without thermal cutoff triggering.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, run one complete discharge-charge cycle with fast charging disabled. The fuel gauge IC on the TALKsmart calibrates its coulomb counter against the cell's discharge curve — skipping this step leaves the percentage readout unreliable for several days.\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 TALKsmart after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens because the fuel gauge IC is still using the discharge curve from the original cell. The new cell hits a voltage cliff — typically around 3.5V under modem or screen load — before the percentage reaches zero. The phone's power rail collapses faster than the old curve predicts. One full discharge-charge cycle at standard charge rate resets the coulomb counter and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTALKsmart not powering on after the battery sat discharged in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells that drop below 2.5V trigger a BMS lockout to prevent damage from deep discharge. The phone will show nothing when you press the power button — no boot screen, no charging indicator. Connect it to a wall charger and leave it for 20–30 minutes before attempting to power on; the BMS needs a trickle current to recover the cell voltage above the 2.9V re-enable threshold before normal charging resumes.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391820071002,"sku":"BWCS-ETV800SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391820103770,"sku":"BWCS-ETV800SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391820136538,"sku":"BWCS-ETV800SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ETV800SL-1.webp?v=1779142264","url":"https:\/\/batteryweb.com\/products\/emporia-talksmart-replacement-battery-37v-1450mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}