{"product_id":"medion-md42200-replacement-battery-144v-4400mah-li-ion","title":"Medion MD42200 Replacement Battery 14.4V 4400mAh BTP-89BM","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMedion MD42200 — 14.4V Li-ion Replacement Battery (BTP-89BM)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V Li-ion battery rated at 4400mAh (63.36Wh), built to the same spec as the original BTP-89BM cell. It fits the Medion MD42200 notebook. The connector and BMS handshake match the MD42200 motherboard exactly — no adapter or modification needed.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eMD42200 platform fit:\u003c\/strong\u003e\n    The MD42200 uses a 14.4V four-cell series configuration with a specific BMS communication protocol. This cell matches that voltage rail, physical connector, and BMS handshake so the laptop recognises it correctly at first boot.\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 an MD42200 board. The BMS accepted the cell without error flags, charge current ramped correctly through CC\/CV stages, and the fuel gauge IC registered the full 4400mAh rated capacity after two calibration cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle reset on the MD42200:\u003c\/strong\u003e\n    After fitting this cell, run one full discharge down to hibernate cutoff, then charge uninterrupted to 100% without unplugging. This resets the BIOS battery learn cycle and clears the inaccurate health warning the MD42200 displays after every cell swap.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the MD42200 BIOS reports poor battery health after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe MD42200 BIOS stores learned capacity data from the previous cell in EEPROM. When a new cell is fitted, that stored data no longer matches actual cell behaviour, so the BIOS flags health as poor or unknown. This is not a fault with the replacement cell — it is stale EEPROM data. Run one full discharge-to-hibernate followed by an uninterrupted full charge. The BIOS relearns capacity from the new cell and the health warning clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eMD42200 shutting down suddenly with 20–30% charge still shown\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC has not yet calibrated against the new cell's voltage curve. The displayed percentage is based on old data, so the laptop shuts down when the actual cell voltage drops below the hardware cutoff — typically around 11.0V under full CPU and display load. The gauge needs two to three full discharge and charge cycles before readings become accurate. Complete those cycles without partial charges to let the IC map the new cell correctly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43410861883482,"sku":"BWCS-FUV2000NB-1","price":89.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43410861916250,"sku":"BWCS-FUV2000NB-2","price":104.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43410861949018,"sku":"BWCS-FUV2000NB-3","price":116.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FUV2000NB-1.webp?v=1779581377","url":"https:\/\/batteryweb.com\/products\/medion-md42200-replacement-battery-144v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}