Get more information at br br How the Black & Decker L2ACF-OPE 20V MAX Lithium Ion Fast Charger Operates. br br The Black & Decker L2ACF-OPE 20V MAX Lithium Ion Fast Charger is one of the hot new releases in the Power Tools Department at Amazon. br br Maintenance mode charging automatically optimizes charging for longer battery life br Multi-voltage charging lets you charge 16V MAX and 20V MAX Lithium-Ion Batteries br Recharges slide pack batteries in 40 minutes or less br br The Black & Decker L2ACF-OPE 20V MAX Lithium Ion Fast Charger is currently offered at an incredible 40 off list price and it ships for FREE.