Part of the 12V interchangeable multi-tool battery system. This 12V battery pack features 4.0Ah lithium cells. Fully charged in 2.5 hours using Draper 12V Fast Charger Stock No. 70326 (available separately). Draper 12V interchangeable battery system allows you to combine one battery with any of the tools within the 12V series. It is also fully compatible with the Draper Storm Force® 10.8V series.