A quick look at the unit I assembled with a power tool battery pack adapter, a circuit breaker and a DPDT switch to allow me to deliver 18-20V of DC power wherever I need to.

Born from an immediate need to operate some 24V greenhouse roll-up motors while waiting to move the ventilation controller this is a project I've been meaning to complete for a while and it should be good for a multitude of uses.

The slip-on connector for Bosch or Makita packs is available many places online. Search for "Makita Bosch battery convertor/converter wire". They're about $10-12 as of May 2023