Tenergy BC1HU AA/AAA/C/D/9V Smart Battery Charger NiMH NiCD Easy to use, FAST and Universal for different types of batteries: 1 to 4pcs AAA, AA, C, D and 1 to 2pcs 9V Powered by an external 110V-240V /50~60Hz AC adapter With negative delta V (- delta V) cut-off function for better life time battery performance Ni-MH and Ni-Cd batteries can be mixed to charge at the same time Individual LED to indicate discharge, fast charge and trickle charge