Electrolux 35601130 Cordless Vacuum Replacement Battery 6V 3300mAh

COD Electrolux 35601130 / RB001 — 6V Ni-MH Replacement Battery

This is a 6V 3300mAh Ni-MH replacement battery for Electrolux cordless vacuum cleaners fitting models 35601130 and RB001. It slots into the handheld unit and restores motor and suction operation when the original cell has degraded past usable capacity. Capacity is sourced from the product specification — 3300mAh, 19.8Wh.

• 35601130 and RB001 compatibility: Both model references share the same 6V battery bay, connector pinout, and BMS communication protocol. The replacement cell matches the original voltage rail exactly, so the motor controller sees no difference on startup.
• Bench tested on actual hardware: We cycled this cell through the vacuum's BMS under normal suction load and then under a simulated blockage. The BMS held stable across both conditions and did not trigger a false overcurrent cutoff during the restricted-airflow draw spike.
• Dock charging behaviour on this vacuum: Do not leave the vacuum sitting on its charging dock continuously. Electrolux cordless vacuums on permanent dock charge trickle-charge the Ni-MH cell even after it reaches full, which accelerates capacity fade. Charge to full and remove the unit from the dock.

Suction dropping before the battery indicator reaches low

This is a voltage sag issue, not a capacity issue. When the filter is partially blocked, the motor has to work harder and pulls more current than rated. That increased draw causes the cell voltage to sag under load, which the vacuum's motor controller reads as a low-battery condition and reduces power accordingly. Clean or replace the filter first — if suction stabilises, the battery is not the fault. If the filter is clear and sag persists, the cell has lost internal capacity and the replacement battery will resolve it.

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

This is a BMS overcurrent trip, not a power failure. When suction is restricted — blocked nozzle, clogged filter, or hair wrapped around the brush roll — airflow drops and motor current spikes. The BMS detects a current reading above its trip threshold and shuts the cell output down to protect it. After a few seconds the BMS resets and power returns. Clear the blockage completely before assuming the battery is at fault. If trips continue on an unobstructed vacuum, check that cell voltage under load does not fall below 5.4V — a cell dropping below that threshold under normal draw needs replacement.