Charges all Dewalt 7.2V- 18V Ni Cd/ Ni Mh/ Li-Ion batteries so users only need one charger for multiple cordless products. Charges the 2.0 Ah batter pack in 40 minutes minimizing downtime. The Dewalt 3-stage charging system provides maximum runtime & extends overall life of the battery. Diagnostics with LED indicator communicates battery charge status: Charged, Charging, Power line problem, Replace pack & Battery too hot or too cold.