The brand focuses predominantly on 20 and 60-volt batteries ... leaving rechargeable tool batteries on the charger is bad for them, but in DeWalt's case, it's not a big deal.
This DeWalt tool kit includes the brand's bestselling cordless drill, an impact driver, two 20-volt 1.3Ah batteries, a single-slot 20V battery charger, and a durable bag to put it all in.