Ansmann 5207123/US Energy 16 Plus Battery Charger Maintenance Device Charging and maintenance device for 1-12 AAA or AA, 1-6 C or D and 1-2 9V rechargeable batteries, automatic refresh function, plus 2 USB charging sockets Smaller, "sleeker" design which takes up less counter space. Includes a pre-charge cycle, which brings badly worn batteries up to a suitable voltage before recharging Additional circuitry for maximizing the rejuvenation of your batteries boast two 5V, 1 Amp USB charging ports compatible with, iPhone, iPad, Blackberry and other 5V USB electronics