The award-winning Dual Universal Battery Charger is compatible with nearly every digital camera battery model on the market and will ensure that users are prepared in even the most demanding shooting atmospheres. Simultaneously charge any combination of 2 camera specific batteries or full set of four AA rechargeables without hindering speed and efficiency. With both sides being monitored and controlled on an individual circuit, there is no need to wait on one set of batteries to fully charge before inserting the second! This all-in-one unit provides the simple solution to lugging around 10 different DSLR chargers, allowing users to focus on simply getting the perfect shot.