Electrolux EUP84DB Replacement Battery 33.3V 3000mAh

Electrolux EUP84DB / EUP86TBMFLOORSTI — 33.3V Li-ion Replacement Battery (140112530260)

This is a 33.3V, 3000mAh lithium-ion battery pack for the Electrolux cordless vacuum range, including the EUP84DB, EUP84IGM, EUP86TBMFLOORSTI, and EUP8GREEN models. It slots into the same battery bay as the original and connects to the same BMS handshake points the charger expects. Capacity is 99.9Wh — matching the factory specification.

• EUP84 and EUP86 platform fit: These models share the same 33.3V cell configuration, connector pinout, and BMS communication protocol. One battery cell pack covers the full range because the voltage rail and handshake logic are identical across them.
• Bench tested on actual hardware: We ran this pack through charge cycles on a live EUP84DB unit. The BMS negotiated correctly with the charger, cell balancing triggered as expected, and the motor drive circuit held steady voltage under sustained suction load.
• Dock charging habit on the EUP84 series: Do not leave this vacuum sitting on the charging dock permanently. The EUP84 series does not interrupt trickle current once full, and continuous dock charging accelerates capacity fade faster than periodic charge-and-remove cycles. Charge to full, then pull it off the dock.

Cordless vacuum losing suction before the battery indicator reaches low

This happens when the motor draws more current than the BMS expects — usually caused by a partially blocked filter or a blockage in the suction path, not a failing battery. The BMS reads an overcurrent condition and throttles output voltage to protect the cells, which the motor translates into reduced airflow. The battery indicator shows remaining charge accurately, but the motor is running under a restricted load it was not rated for. Clear the filter and check the suction path before swapping the battery.

Motor cuts out mid-clean, then recovers after a short pause

This is a BMS overcurrent trip, not a faulty battery. When suction is restricted — blocked filter, tangled brush roll, or a partial blockage — the motor pulls sustained high current to compensate, and the BMS cuts power to protect the cells. The recovery pause is the BMS thermal and current timer resetting. Fix the restriction first. If the motor still trips on a clear airpath, check that the cell voltage under load stays above 28V; a pack dropping below that threshold under normal draw needs replacement.