{"product_id":"medion-akoya-e15403-replacement-battery-76v-6000mah-li-polymer","title":"Medion Akoya E15403 Replacement Battery 7.6V 6000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMedion Akoya E15403 — 7.6V Li-Polymer Replacement Battery (4588105-2S)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.6V, 6000mAh (45.6Wh) lithium-polymer battery replaces the original cell in the Medion Akoya E15403 laptop. It fits all MSN variants — 30026724, 30026726, 30026727 — and cross-references OEM part numbers 4588105-2S, 40071698, and 40072215. Voltage, connector, and physical footprint match the original spec at 245.60 x 106.10 x 5.10mm.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAkoya E15403 MSN variant coverage:\u003c\/strong\u003e\n    All listed MSN variants share the same motherboard power rail, connector pinout, and BMS handshake protocol, which is why a single cell part number covers the full production run. Swapping between MSN variants causes no compatibility issues.\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 Akoya E15403 platform. The BMS negotiated correctly with the system firmware, and charge termination triggered cleanly at full capacity without overcharge events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003ePost-install calibration on the E15403:\u003c\/strong\u003e\n    After fitting this cell, run the laptop down to hibernate-cutoff under normal use, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning the system throws after any 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 Akoya E15403 BIOS flags a new battery as poor health immediately after swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe E15403 BIOS reads health status from EEPROM data embedded in the battery pack. When a new cell goes in, the EEPROM counter resets and the BIOS interprets that as degraded or unknown status — not a fault with the replacement. The fuel gauge IC also needs two to three full cycles to calibrate against the new cell chemistry. Until those cycles complete, health percentage and time-remaining figures will read inaccurately. Running the battery learn cycle clears this within a few charge sessions.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eLaptop shuts down at 20–30% shown on the gauge after battery replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC still holds calibration data from the old, degraded cell. The gauge thinks 25% remains, but the new cell's voltage curve doesn't match that expectation yet, so the system hits the low-voltage cutoff before the displayed percentage reaches zero. It is a calibration gap, not a defective replacement. Discharge fully to hibernate-cutoff, charge to 100% uninterrupted, and repeat once more — the gauge will track the new cell accurately by the second or third cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409567678554,"sku":"BWCS-TOC501NB-1","price":83.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409567711322,"sku":"BWCS-TOC501NB-2","price":99.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409567744090,"sku":"BWCS-TOC501NB-3","price":110.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-TOC501NB-1.webp?v=1779580030","url":"https:\/\/batteryweb.com\/products\/medion-akoya-e15403-replacement-battery-76v-6000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}