About this replacement
Medion Akoya E6245 — 11.4V Li-Polymer Replacement Battery (0B23-01Q9000M)
This 11.4V, 3700mAh (42.18Wh) Li-Polymer battery replaces the original cell in the Medion Akoya E6245 notebook. It fits all MSN variants of the E6245, including MD 61126, MD 61262, and MD 61275. OEM part numbers 40068772 and A31-M15 are also covered by this single unit.
- Akoya E6245 variant coverage: Every E6245 MSN variant uses the same 11.4V three-cell Li-Polymer architecture with an identical connector pinout and BMS handshake. One battery fits the full range without any modification.
- Bench tested on actual hardware: We cycled this cell on the E6245 platform and logged BMS charge termination, cell balancing, and thermal response across full discharge. The BMS cut in cleanly at both ends of the voltage window with no false trips.
- BIOS learn cycle after install: After fitting this battery, run the laptop down to hibernate cutoff, then charge uninterrupted to 100%. This resets the BIOS battery learn cycle and clears the inaccurate health warning that appears after swapping cells on the E6245.
BIOS reporting battery health as poor after fitting a new cell
The Akoya E6245 BIOS reads health data stored in the battery's EEPROM and compares it against charge history from the previous cell. A brand-new cell has no accumulated charge history, so the BIOS flags it as degraded immediately after installation. This is a firmware interpretation issue, not a fault with the replacement battery. Run one full discharge-to-hibernate then an uninterrupted charge to 100% — the BIOS recalculates health from the new cycle data and the warning clears.
Laptop shutting down at 20–30% charge shown on screen
This happens when the fuel gauge IC has not yet calibrated against the new cell's actual voltage curve. The gauge estimates remaining capacity using data from the old, degraded cell and calls a shutdown when the displayed percentage is still well above zero. The fix is two or three full discharge-to-hibernate and full-charge cycles — these let the fuel gauge IC map the new cell's real voltage cliff. After calibration, the displayed percentage at shutdown drops to the correct range near 5%.