{"product_id":"emporia-smart-2-replacement-battery-38v-2400mah-li-polymer","title":"AK-S2 Emporia Smart 2 Compatible Battery 3.8V 2400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEmporia Smart 2 — 3.8V Li-Polymer Replacement Battery (AK-S2)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 2400mAh Li-Polymer cell replaces the original AK-S2 battery in the Emporia Smart 2 smartphone. It restores power to a phone that won't hold charge or shuts down unexpectedly. Voltage and capacity match the original spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEmporia Smart 2 fitment:\u003c\/strong\u003e\n    The Smart 2 uses a specific connector pinout and BMS handshake tied to the AK-S2 part number. This cell carries the matching contact layout and charge profile so the phone's charge IC accepts it without throwing a protection fault.\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 Smart 2 platform. The BMS accepted the charge profile on the first cycle, protection cutoffs triggered correctly at both ends of the voltage window, and no thermal events were recorded.\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 for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated register — preventing false percentage readings from the start.\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\"\u003eThis happens when the fuel gauge IC is still calibrated to the old cell's discharge curve. A fresh Li-Polymer cell has a steeper voltage cliff under load — the modem or screen draws current, voltage dips sharply, and the phone interprets it as an empty battery. The fix is one full uninterrupted discharge to automatic shutdown, followed by a full charge without interruption. After that cycle, the coulomb counter resets against the actual cell curve and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eOS reporting wrong battery percentage after cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Smart 2's fuel gauge IC stores the charge curve of the previous cell in memory. When a new cell goes in, the IC continues reading against old data — so 40% on screen may mean 15% actual charge remaining. This is not a fault with the replacement cell. Run the phone down to automatic shutdown once, then charge uninterrupted to 100%. That single full cycle overwrites the stored curve and brings the percentage display back in line with real capacity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391892258906,"sku":"BWCS-EAS200SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391892291674,"sku":"BWCS-EAS200SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391892324442,"sku":"BWCS-EAS200SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-EAS200SL-1.webp?v=1779142541","url":"https:\/\/batteryweb.com\/products\/emporia-smart-2-replacement-battery-38v-2400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}