Compatibility

What fits what

Compatibility is the most searched and worst served subject in power tools. These pages say what works, in which direction, and on what condition.

Cordless tool batteries of different shapes lined up on a jobsite trestle with two chargers

Three questions cover nearly every case: will my battery fit this tool, is there an adapter to another brand, and do these two voltage figures mean the same thing.

Battery adapters

Which pairs exist, in which direction, and when to skip them.

The three alliances

One battery, dozens of brands. AMPShare, CAS and Power for All.

One brand, several ranges

LXT or XGT, blue or green Bosch: what fits and what does not.

Chargers across ranges and brands

What charges what inside a brand and inside an alliance, and what nobody writes down.

18V or 20V MAX

Why both numbers describe the same battery.