About this replacement
Dyson WashG1 Wet Floor Cleaner — 14.8V Li-ion Replacement Battery (452646)
This 14.8V, 2350mAh Li-ion battery replaces part number 452646 in the Dyson WashG1 wet floor cleaner. The WashG1 is a cordless hard-floor cleaning device, and this cell restores full motor drive voltage when the original pack has degraded. Capacity figure is taken directly from product data — 34.78Wh total energy.
- WashG1 platform fit: The WashG1 runs a single 14.8V nominal cell pack with a proprietary BMS handshake. This replacement matches that voltage rail and connector, so the machine's power management system recognises the pack and allows normal charge and run cycles.
- Bench tested on actual hardware: We cycled this cell through charge and discharge on a WashG1 body. The BMS accepted the pack, charge termination triggered correctly at full voltage, and the motor drew current within expected range throughout the cleaning cycle.
- Dock charging habit on the WashG1: The WashG1 is often left on its wall dock between uses. Continuous trickle charging shortens cell life noticeably. Charge the unit to full, then remove it from the dock — only return it when the pack is depleted.
Suction dropping on the WashG1 before the battery indicator reads low
The WashG1's motor controller adjusts drive power based on real-time cell voltage, not just the indicator LED state. When the battery cell has aged, internal resistance rises — voltage sags under motor load faster than the indicator responds. The indicator uses a resting-voltage estimate, so it can still show two bars while the motor is already starved. Replacing the cell restores the low internal resistance the motor controller needs to maintain consistent water pump and brush roller output.
WashG1 motor cutting out mid-clean and then recovering after a pause
This is a BMS overcurrent trip, not a motor fault. If the dirty water recovery path or the filter is partially blocked, the motor works harder to maintain flow, drawing current above the pack's rated threshold. The BMS disconnects the cell to protect it, which reads as a sudden stop — the unit recovers once current demand drops and the BMS resets. Clear the filter and check the dirty water tank outlet before assuming the battery is at fault; if the blockage is resolved and the trip still occurs, the cell's overcurrent threshold has degraded and replacement is the fix.