Cordless power tool battery charging typically runs at 18V-20V for most consumer lines, proprietary dock connector. Power tool batteries charge on dedicated docks matched to the tool brand’s voltage platform — cross-brand adapters exist but void most manufacturer warranties.
Before buying a replacement
Confirm exact voltage and connector polarity before substituting a generic charger for a cordless power tool battery — unlike phone or laptop charging, this category hasn’t converged on a shared negotiation standard, so mismatches carry more real risk.