NorthStar DR202 Aries Replacement Battery 10.8V 6600mAh

NorthStar Aries Series — 10.8V Li-ion Replacement Battery (DR202)

This is a 10.8V, 6600mAh (71.28Wh) lithium-ion battery for NorthStar Aries series laptops. It replaces OEM part numbers DR202, EMC36, ME202BB, NL2020, and SMP02. If your original cell no longer holds a charge or the system refuses to recognise it, this is a direct swap.

• Aries series compatibility: NorthStar used a consistent 10.8V battery rail and the same connector footprint across the Aries lineup. The EEPROM embedded in this cell carries the correct capacity and chemistry flags, so the BIOS picks it up without manual configuration.
• Bench tested on actual hardware: We cycled this cell through full charge and discharge on an Aries unit. The BMS engaged correctly at both ends — no false low-voltage cutoffs, and charge termination landed at the correct 12.6V ceiling.
• First-cycle reset after install: After fitting this battery, run one full discharge down to hibernate-cutoff, then charge uninterrupted to 100%. This forces the BIOS to complete a battery learn cycle and clears the inaccurate health warning that appears after every cell swap.

BIOS reporting poor battery health after swapping cells

The Aries BIOS reads stored capacity data from the battery's EEPROM at boot. When a new cell goes in, the EEPROM values don't match the discharge history the BIOS accumulated for the old cell. The system flags this as degraded health — it's a data mismatch, not a faulty battery. One full discharge-to-hibernate followed by an uninterrupted charge to 100% gives the BIOS enough data to recalibrate and clear the warning.

Laptop shutting down at 20–30% charge remaining

This happens when the fuel gauge IC hasn't calibrated to the new cell yet. The voltage curve on a fresh lithium-ion cell differs slightly from a worn one, so the OS fuel gauge misreads the remaining capacity. Under full CPU and display load, the cell hits a voltage cliff before the gauge expects it, triggering an emergency shutdown. Run two to three full discharge-and-charge cycles — the fuel gauge IC maps the new curve and the shutdowns stop.