The Xtar VC2S is a dual bay USB battery charger that has the latest technology embedded into it. An LCD display provides easy-to-read information such as battery voltage, current charge rate, and estimated charge capacity, to name a few. Not only that, but the VC2S has an estimated battery capacity features which measures how much capacity is charged into your battery for a better understanding of how much longer it will take to fully charge. With a 0V Activation Function, the VC2S brings over-discharged Li-ion batteries back to life ultimately saving time and money. With a micro-USB port, it is easy to charge batteries anywhere, simply plug into a wall adapter or power bank for charging anywhere and everywhere. The Xtar VC2S can also be used as a portable power bank, charge up USB devices, and batteries at the same time by plugging into the USB port this way devices will always be at full power anywhere.