DeWalt 20V to Hercules 20V Battery Adapter (with BMS, Vacuum Pump Compatible)

Works nicely. It does have a fair amount of play between the battery and adapter but otherwise decent quality.

Works perfectly for me...Going to order another!

The DeWalt 20V to Hercules 20V Battery Adapter works as advertised. I use it on my Hercules Reciprocating Saw to prune bushes and tree limbs in my empty lot.