Robot vacuum charging typically runs at typically a low-voltage barrel connector to a docking station. Robot vacuums charge via their docking station rather than a handheld charger, with the dock itself plugged into a standard wall outlet.
Before buying a replacement
Confirm exact voltage and connector polarity before substituting a generic charger for a robot vacuum — unlike phone or laptop charging, this category hasn’t converged on a shared negotiation standard, so mismatches carry more real risk.