AENO RC3S Cordless Vacuum Compatible Battery 14.4V 2600mAh

AENO RC3S / RC2S — 14.4V Li-ion Replacement Battery

This 14.4V 2600mAh Li-ion battery replaces the original power cell in the AENO RC3S and RC2S cordless vacuum cleaners. It fits the handheld motor assembly and restores suction power when the original cell has degraded. Voltage and capacity match factory specification exactly.

• RC3S and RC2S compatibility: Both models run on the same 14.4V power rail with the same connector format and BMS communication protocol, which is why a single cell covers the pair. Swapping between the two models on the same charger confirms this — the BMS handshake is identical.
• Bench tested on actual hardware: We ran this cell through charge and discharge cycles on the RC3S motor platform. The BMS registered full capacity at 2600mAh, thermal protection tripped correctly at sustained high draw, and the cell returned to standby without fault codes.
• Dock charging behaviour on the RC3S: Do not leave the vacuum sitting on the charging dock continuously. Constant trickle charge accelerates capacity fade in Li-ion cells at this voltage class. Charge to full, then remove from the dock until the next use cycle.

Suction dropping before the battery indicator reaches low

This happens when the motor draws more current than the BMS expects under load — typically caused by a partially blocked filter. The BMS reads a voltage sag on the cell and throttles output before the indicator registers low charge. The vacuum feels like it is running out of power, but the cell still has capacity. Clean or replace the filter and the sag disappears.

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

This is a BMS overcurrent trip, not a dead battery. When suction is restricted — blocked filter, full dustbin, or a blockage in the nozzle — the motor strains and current spikes past the BMS threshold. The BMS cuts the circuit to protect the cell, then resets once current normalises. Fix the blockage first, then confirm cell voltage sits above 12.0V before ruling out the battery.