The 12-Volt MAX CXT Lithium-Ion tool series combines performance with superior ergonomics in a compact size. At the heart of this expanding tool series is the efficient 12-Volt MAX charging system. The efficient 12-Volt MAX CXT charger will charge 12-Volt MAX CXT 2.0Ah battery in 70 minutes and 12-Volt MAX CXT 4.0Ah battery in 130 minutes. During the charging process, the charger communicates with the battery’s built-in chip to optimize battery life by actively controlling current, voltage and temperature. For added convenience, the charger can be mounted on a wall to maximize work space.