Take on the days work with this 20V MAX* Starter Kit, which includes a 4.0Ah battery along with a high-performance charger. Quickly tackle large workloads without stops with the 4.0Ah batteries optimized runtime and the chargers rapid 2 Amp charge rate. It delivers the versatility you need to efficiently finish jobs with the ability to charge all 20V MAX* batteries. Best used with power tools, the battery is ready when you need it with no memory and low self-discharge. Overload protection extends the batteries life for long-term use and a conveniently visible LED indicator displays remaining charge to avoid unplanned downtime.