The black+decker® BACARDI202B 20v lithium- ion 2amp charger allows you to charge all black+decker® 12-Volt max and 20-Volt max power connect™ lithium-ion slide batteries quickly and efficiently. This charger can power 1.5Ah lithium slide pack batteries in 45 minutes or less. The maintenance mode function automatically optimizes charging for longer battery life, and included six foot cord gives you flexibility when charging up for every job. Maximum initial battery voltage (measured without a workload) is 20 volts.