Evolveo RoboTrex H11 Replacement Battery 14.8V 2600mAh

Evolveo RoboTrex H11 — 14.8V Li-ion Replacement Battery

This 14.8V 2600mAh (38.48Wh) Li-ion battery fits the Evolveo RoboTrex H11 robotic vacuum cleaner. It replaces the original cell pack when capacity fade leaves the unit cutting out mid-clean or failing to complete a full floor pass. Same voltage, same form factor — the H11 charges and operates as normal once swapped.

• RoboTrex H11 fit: The H11 runs a 14.8V four-cell Li-ion pack to drive its navigation board, brush motor, and suction fan simultaneously. Dropping to a mismatched voltage disrupts all three — this cell matches the original voltage rail exactly.
• Bench tested on actual hardware: We cycled this pack through the H11's charge sequence and confirmed the BMS accepted the charger handshake without fault flags. Cell balance held stable across three consecutive discharge cycles.
• Dock charging habit on the H11: Do not leave the H11 sitting on its dock permanently between cleans. Continuous trickle current from the dock accelerates capacity fade in Li-ion cells. Charge to full, then remove the unit from the dock until the next clean.

Suction dropping before the battery indicator reaches low on the H11

This happens when the motor draws more current than the BMS expects — usually because a partially blocked filter forces the fan to work harder. The BMS reads the elevated draw as a near-depleted cell and throttles output early. The suction drop is not always a battery fault. Remove and clean the H11's filter first, then retest. If suction holds normally after cleaning, the battery is fine — the filter was the load source.

H11 motor cuts out briefly then recovers during a run

A momentary cutout that self-recovers is almost always a BMS overcurrent trip rather than a dead cell. On the H11, this happens when the brush roller snags on carpet fringe or a cable and stalls — the current spike crosses the BMS trip threshold and the pack shuts off for two to three seconds before resetting. Clear any obstruction around the brush roller, check that the roller spins freely by hand, and run the unit again. If cutouts continue on a clear floor, measure pack voltage at rest — a healthy cell reads between 16.0V and 16.8V fully charged.