Electrolux Junior 2.0 Ni-MH Replacement Battery 3.6V 2000mAh

Electrolux Junior 2.0 — 3.6V Ni-MH Replacement Battery

This is a 3.6V, 2000mAh Ni-MH replacement battery for the Electrolux Junior 2.0 cordless stick vacuum. It slots into the Junior 2.0 handset and restores cordless operation when the original cell has degraded. Capacity is rated at 7.2Wh — identical to the factory specification.

• Junior 2.0 fit: The Junior 2.0 runs a single 3.6V Ni-MH cell on a straightforward low-draw motor circuit. No proprietary BMS handshake is required — the charger reads voltage directly from the cell terminals, so a matching chemistry and voltage is what matters here.
• Bench tested on actual hardware: We cycled this cell through charge and discharge on the Junior 2.0 platform. The motor drew steady current well within the cell's discharge rating, and voltage held flat across the working range before dropping off at depletion.
• Dock charging on the Junior 2.0: Do not leave the vacuum sitting on the charging dock permanently. Ni-MH cells in continuous trickle charge develop capacity fade faster than cells charged only when depleted. Charge to full, then remove from the dock.

Suction dropping before the battery indicator reaches low

Ni-MH voltage sags under load before the cell is actually depleted. On the Junior 2.0, a partially blocked filter forces the motor to draw more current than rated, which accelerates that voltage sag. The motor slows — suction drops — but the indicator still reads mid-charge because the cell isn't empty, just stressed. Clean the filter first, then test again. If suction holds steady after that, the cell was fine and the restriction was the cause.

Motor cutting out mid-clean and then recovering after a few seconds

This is a BMS overcurrent trip, not a dead battery. Sustained restricted airflow — from a clogged filter or blocked nozzle — forces the motor to pull current spikes the protection circuit treats as a fault. The BMS cuts power briefly, then resets once current drops. Clear the blockage completely before assuming the cell is at fault. If the cutout stops after clearing the filter, the battery is not the problem.