Charges all DeWALT 7.2V to 18V NiCd/NiMH/Li-ion batteries (except Univolt batteries) so users need only 1 charger for multiple cordless products. Charges the battery in 1 hour or less thus minimizing downtime. The DeWALT 3-stage charging system provides maximum run time and extends overall life of the battery. Diagnostics with LED indicator communicate battery charge status: charged, charging, power line problem, replace pack, and battery too hot or too cold.