The DEWALT DCB101 charger can charge all DEWALT 12 V and 20 V max Li-ion battery packs. It charges the battery in 1 hour or less thus minimizing downtime. It has a built in diagnostics system with a LED indicator that communicates battery charge status: charged, charging, power line problem, replace pack, and battery too hot or too cold. It?s backed by DeWalt's 3-year limited warranty.