MegaImage Apollo 10.8V Replacement Battery DR202 6600mAh

MegaImage Apollo / MegaBook 911 — 10.8V Li-ion Replacement Battery (DR202)

This is a 10.8V, 6600mAh (71.28Wh) Li-ion replacement battery for the MegaImage Apollo and MegaBook 911 notebooks. It replaces OEM part numbers DR202, EMC36, ME202BB, NL2020, and SMP02. When the original cell degrades and the laptop loses charge capacity, this is the direct swap.

• Apollo and MegaBook 911 compatibility: Both models run the same 10.8V battery rail and use an identical connector housing and BMS handshake protocol. One cell fits both without adapter or modification.
• Bench tested on actual hardware: We cycled this cell through charge, full load discharge, and BMS communication checks. The protection circuit responded correctly to over-charge and over-discharge thresholds, and the BIOS read the battery as present and healthy after the learn cycle completed.
• Post-install calibration on the Apollo: 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 appears after every cell swap on the Apollo platform.

BIOS reporting battery health as poor after fitting the new cell

The Apollo's BIOS reads EEPROM data written by the original cell. When a new cell is installed, that stored data no longer matches the actual cell chemistry, and the system flags it as degraded or unknown. This is a firmware state, not a fault with the replacement. Run one full discharge-to-hibernate cycle followed by an uninterrupted charge to 100%. After two to three cycles, the BIOS recalibrates and the health status clears.

Laptop shuts down at 20–30% charge shown on screen

This happens when the fuel gauge IC is still calibrated to the old, degraded cell's voltage curve. The new cell hits a voltage cliff under combined CPU and display load that the fuel gauge misreads as near-empty. The laptop cuts power to protect itself based on a wrong reference point. Run three full discharge-to-hibernate then full-charge cycles — by the third cycle, the fuel gauge IC resets its reference and the shutdowns stop. Verify the cell is reading above 10.8V at rest after charging.