Medion Erazer Beast X10 Replacement Battery 11.55V 7800mAh

Medion Erazer Beast X10 / X20 / X25 — 11.55V Li-Polymer Replacement Battery (BATRPFIDG3-6102)

This is an 11.55V, 7800mAh (90.09Wh) lithium-polymer replacement battery for the Medion Erazer Beast X10, Beast X20, and Beast X25 gaming laptops. It replaces OEM parts BATRPFIDG3-6102, PFIDG-00-13-3S2P-0, and PFIDG-03-17-3S2P-0. The cell is a 3S2P configuration sized at 287.60 x 97.30 x 9.50mm — physically identical to the original pack.

• Beast X10, X20, and X25 compatibility: All three laptops run the same 11.55V battery rail, share the same physical bay dimensions, and use the same BMS handshake protocol — which is why a single cell covers the entire Beast lineup across these generations.
• Bench tested on actual hardware: We cycled this cell through full charge-discharge runs on Beast-series hardware and confirmed the BMS communicates correctly with the firmware, reports accurate state-of-charge, and does not trigger a protection cutoff under sustained CPU and GPU load.
• Post-install calibration on the Erazer Beast: After fitting, run the laptop down to hibernate-cutoff on battery alone — no AC during this discharge — then charge uninterrupted to 100%. This forces the BIOS battery learn cycle to reset against the new cell and clears the inaccurate health warning that appears in Medion's power management after every cell swap.

Why the Erazer Beast shuts down at 20–30% after a battery swap

The Beast X10 series runs a combined CPU and discrete GPU load that draws hard on the battery under gaming or rendering workloads. A new cell that hasn't completed a calibration cycle still carries EEPROM state-of-charge data from the factory, which doesn't match the actual voltage curve of the installed chemistry. When the cell hits a voltage cliff under full load — even if the OS gauge shows 25% remaining — the BMS cuts power immediately to protect the cells. Running one full discharge-to-hibernate cycle resolves this mismatch and the shutdowns stop.

BIOS reporting battery health as "poor" or "unknown" after fitting this cell

This is an EEPROM data issue, not a fault with the replacement cell. The BIOS reads health metadata written to the original pack's EEPROM, and when a new cell arrives with factory-default values, the firmware flags it as degraded or unrecognised. The fuel gauge IC also needs two to three calibration cycles before it accurately tracks the new cell's capacity curve. Complete the discharge-to-hibernate and full charge sequence twice, and the health status in BIOS and Windows Battery Report will update to reflect the actual cell condition.