BobSweep Bob PetHair Replacement Battery 14.8V 2600mAh

BobSweep Bob PetHair — 14.8V Li-ion Replacement Battery (E14040401505a)

This 14.8V Li-ion battery replaces the original pack in the BobSweep Bob PetHair robotic vacuum. It fits the Bob PetHair, WP460011RO, Junior, and WJ540011 models. Capacity is 2600mAh (38.48Wh) — use the figures from the product data, not estimated web specs.

• Bob PetHair and Junior platform compatibility: These models share the same 14.8V cell configuration, connector pinout, and BMS handshake requirements. A battery mismatch at the BMS level causes the vacuum to refuse to start or cut out within seconds of powering on.
• Bench tested on actual hardware: We ran this cell through charge cycles on a Bob PetHair unit and confirmed the BMS negotiated correctly with the onboard charger. The pack accepted a full charge without triggering fault states and delivered consistent voltage under motor load.
• Dock charging habit on the Bob PetHair: Do not leave the robot sitting on the charging dock between every run if it still holds a charge. Continuous trickle charge through the dock degrades Li-ion cells faster than normal cycle use. Charge to full, then remove the unit from the dock until the next clean.

Suction dropping before the battery indicator reaches low

Li-ion cells under voltage sag deliver less current to the motor before the indicator circuit registers a low-battery condition. On the Bob PetHair, a clogged filter forces the motor to draw above its rated current, which accelerates that sag. The battery reads "charged" while the motor is already starved. Clean the filter first — if suction recovers, the battery was not the root cause.

Motor cuts out mid-cycle then restarts on its own

This is a BMS overcurrent trip, not a battery failure. When the suction path is restricted — blocked brush roll, full dustbin, or a clogged filter — the motor pulls sustained current above the BMS threshold. The pack cuts the circuit as a protection response, then resets once current drops. Clear the restriction, then check that cell voltage is above 14.0V before concluding the pack is at fault.