{"product_id":"medion-akoya-md97199-replacement-battery-148v-4400mah-li-polymer","title":"Medion Akoya MD97199 Replacement Battery BTY-S31 14.8V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMedion Akoya MD97199 Series — 14.8V Li-Polymer Replacement Battery (BTY-S31)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.8V, 4400mAh Li-Polymer replacement battery for the Medion Akoya MD97199, MD97201, MD97247, and MD98150 notebooks. It slots into the same bay as the original cell and uses the same OEM part numbers BTY-S31, 925T2950F, and BTY-S32. Capacity is 65.12Wh, matching the original specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAkoya MD97199 series compatibility:\u003c\/strong\u003e\n    These four Akoya models share the same battery bay dimensions, 14.8V power rail, and BMS connector pinout. The BTY-S31 part number covers all four 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 an Akoya-series board. The BMS handshake completed without fault codes, and the charge controller accepted the full 4400mAh cell without triggering protection cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on Akoya notebooks:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge to hibernate-cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that typically appears after any 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 a new cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Akoya MD97199 BIOS reads health data stored in the old cell's EEPROM, not from real-time voltage measurements. When a new cell goes in, the EEPROM data no longer matches the new chemistry, and the BIOS flags it as degraded or unknown. This is not a fault with the replacement cell. Run the full discharge-to-hibernate, then charge-to-100% cycle once, and the BIOS will re-learn the new cell's capacity baseline and clear the warning.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% charge shown on screen\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC is still calibrated to the old, degraded cell. The percentage shown reflects the old cell's voltage curve, not the new one. Under combined CPU and display load, the new cell hits a voltage point the firmware incorrectly reads as near-empty and triggers an emergency shutdown. Run two full calibration cycles — discharge to hibernate-cutoff, charge to 100% uninterrupted — and the fuel gauge IC will re-map to the new cell's actual voltage range, resolving the early cutoff at 14.4V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410821513306,"sku":"BWCS-MSX360HB-1","price":143.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410821546074,"sku":"BWCS-MSX360HB-2","price":166.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410821578842,"sku":"BWCS-MSX360HB-3","price":183.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MSX360HB-1.webp?v=1779581258","url":"https:\/\/batteryweb.com\/products\/medion-akoya-md97199-replacement-battery-148v-4400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}