The XTAR VC4 charger is a combination of our XP4C and our VC2 charger! This intelligent charger can recognize, charge, and display charging current, battery voltage, and charge capacity of Ni-MH, Ni-Cd, and Li-ion batteries at the same time! This is a USB powered charger, so it can be plugged into any of your existing AC USB wall adapter plugs (e.g. Apple, Samsung, etc.)