Electrolux EUP82MG 29.6V Replacement Battery 3000mAh

Electrolux EUP82MG Series — 29.6V Li-ion Replacement Battery (140112530252)

This 29.6V lithium-ion battery at 3000mAh (88.8Wh) replaces the original power cell in the Electrolux EUP82MG and EUP82RR cordless stick vacuums. It fits models 900278801 01 and 900278802 01 along with additional variants in the same family. The OEM part numbers 140112530047, 140112530179, and 140112530278 all cross to this cell.

• EUP82 family compatibility: These models share a common 29.6V power rail, the same physical connector, and an identical BMS handshake protocol — which is why one battery covers the full model range listed above.
• Bench tested on actual hardware: We ran this cell through charge cycles and confirmed the BMS communicates correctly with the vacuum's motor controller. The overcurrent protection tripped and reset normally during sustained high-load draws.
• Dock charging habit on this vacuum: Leaving the EUP82 series on the charging dock continuously accelerates capacity fade. The dock does not stop trickle current once full. Charge to 100% and disconnect — store the vacuum off the dock between uses.

Suction dropping before the battery indicator reaches low on the EUP82

The EUP82's motor controller monitors both battery voltage and current draw simultaneously. When the filter is partially blocked, motor draw increases and the BMS interprets the resulting voltage sag as a low-battery condition — even when cells still hold charge. The vacuum reduces power to protect the battery before the indicator LED reflects actual state of charge. Clean the filter first; if suction restores, the battery is not the fault.

Motor cuts out mid-clean then recovers after a few seconds

This is a BMS overcurrent trip, not a dead battery. Sustained restricted airflow forces the motor to pull above the BMS threshold — typically triggered when the brush roll is tangled or the filter is clogged past 50% restriction. The BMS cuts power, waits for current demand to drop, then resets automatically. Clear the blockage and check that resting voltage returns to at least 28V before resuming use.