The BT 48V chargers are perfect for charging your lithium batteries. The compact design and the easy usability make this product suitable for all sorts of charging applications. These chargers are 100% compatible with other Battery Technology products and can be bought as a package with BT batteries. This charger is only suitable for 48V batteries. With its high charging current, this charger is perfect for charging middle to larger battery packs. The BT charger is capable of charging multiple batteries, as long as the batteries that are charged are connected to eachother. Feel free to contat us with any questions you might have about our products.