{"product_id":"medion-akoya-mini-e1210-replacement-battery-111v-4400mah-li-ion","title":"Medion Akoya Mini E1210 Replacement Battery BTY-S12 11.1V","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMedion Akoya Mini E1210 — 11.1V Li-ion Replacement Battery (BTY-S12)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 11.1V, 4400mAh Li-ion replacement battery for the Medion Akoya Mini E1210 netbook. It fits the E1210 and related variants including MD96891, S1211, and MD96953. It replaces OEM part BTY-S12 directly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eE1210 series compatibility:\u003c\/strong\u003e\n    The E1210, MD96891, S1211, and MD96953 all share the same 11.1V three-cell architecture, BTY-S12 connector pinout, and BMS handshake protocol — which is why a single cell covers all four variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the E1210 platform. The BMS negotiated correctly with the onboard fuel gauge IC, and cell voltage held steady across the discharge curve without premature cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the E1210:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge to hibernate cutoff, then charge uninterrupted to 100% without interruption. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after a cell swap on this platform.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBIOS reporting poor battery health immediately after fitting the BTY-S12\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Akoya Mini E1210 BIOS reads health data from EEPROM registers carried over from the old cell. When a new cell is installed, those registers still reflect the degraded state of the previous battery. The BIOS flags \"poor health\" not because the new cell is faulty, but because it hasn't yet overwritten the stale EEPROM data. Running one complete discharge-to-hibernate followed by a full uninterrupted charge allows the fuel gauge IC to rewrite those registers against the new cell's actual chemistry. After one or two such cycles, the health warning clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eAkoya Mini E1210 shutting down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops below the BMS cutoff threshold under combined CPU and display load, even though the OS fuel gauge still reads 20–30%. The fuel gauge IC is estimating remaining capacity from a model calibrated to the old cell, so the percentage shown no longer maps accurately to actual voltage. The cell hits a voltage cliff — typically around 9.9V under load — and the BMS cuts power before the gauge reaches zero. Fix this by completing two full discharge-to-hibernate and full recharge cycles, which forces the fuel gauge IC to recalibrate its discharge curve against the new cell, restoring accurate percentage readings at that voltage point.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410825773146,"sku":"BWCS-MSU100HB-1","price":93.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410825805914,"sku":"BWCS-MSU100HB-2","price":106.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410825838682,"sku":"BWCS-MSU100HB-3","price":116.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MSU100HB-1.webp?v=1779581287","url":"https:\/\/batteryweb.com\/products\/medion-akoya-mini-e1210-replacement-battery-111v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}