DEWALT DCB114 40V Max Charger Can charge all DEWALT 40-Volt max lithium-ion batteries On-board diagnostics that let you know what is going on with your pack Charges the 4 Ah 40-Volt max li-ion battery in 90 minutes or less Charges the 6 Ah 40-Volt max li-ion battery in 130 minimum or less *Maximum initial battery voltage (measured without a workload) is 40 volts. Nominal voltage is 36