The Nitecore UM20 is the dual-bay version of the highly popular UM10 battery charger. It is an advanced USB management and charging system that is capable of powering up lithium ion batteries from a wall outlet while simultaneously charging an external electronic device such as mobile phones and tablets. The UM20 also works as a data transfer medium when a device is plugged in. With a big LCD screen that shows real-time charging status, you can easily monitor the power levels of your battery and gadget.
