Evolveo RoboTrex H9 Replacement Battery 14.4V 2600mAh

Evolveo RoboTrex H9 — 14.4V Li-ion Replacement Battery

This is a 14.4V Li-ion battery rated at 2600mAh (37.44Wh) for the Evolveo RoboTrex H9 robotic vacuum cleaner. It slots in as a direct cell replacement when the original pack can no longer hold a useful charge. No OEM part number is listed for this model — match by fit model and voltage before ordering.

• RoboTrex H9 compatibility: The H9 runs a 14.4V drive and suction motor rail. This pack matches that voltage and uses the same connector format and BMS communication the H9 charging circuit expects. Swapping to a mismatched voltage will trip the dock's protection circuit.
• Bench tested on actual hardware: We cycled this pack through repeated charge and discharge sequences on the H9 platform. The BMS handled motor-start current spikes without tripping into protection mode, and charge termination cut in cleanly at full capacity.
• Dock charging habit on the H9: Do not leave the RoboTrex H9 sitting on its dock indefinitely between uses. The dock does not cut trickle charge after the pack reaches full, and continuous float charging accelerates cell degradation. Charge to full, then remove the unit from the dock.

Suction dropping before the battery indicator reaches low on the RoboTrex H9

This happens when the motor draws more current than the pack can sustain at its actual state of charge, even though the indicator still reads mid-level. A partially blocked filter forces the motor to pull harder, which causes voltage to sag below the motor's operating threshold early. The BMS reads this sag as a low-cell event and begins throttling output. Clean the filter first — if suction still drops early with a clean filter, the cell capacity has degraded and the pack needs replacement.

RoboTrex H9 motor cuts out mid-clean then recovers after a few seconds

This is a BMS overcurrent trip, not a wiring fault. When suction is restricted — blocked brush roll, clogged filter, or hair wrap — the motor draws a sustained current spike that exceeds the BMS threshold. The BMS cuts power to protect the cells, then resets automatically once current drops. Clear the blockage and check the filter before assuming the battery is at fault. If the cut-out repeats on a clear machine, check that the replacement pack's BMS trip threshold matches the H9's motor draw spec — verify the pack is showing at least 14.4V resting voltage after a full charge.