The XTAR VC4 charger is a combination of our XP4C and VC2 charger! This intelligent charger can recognize, charge, and display charging current, battery voltage, and charge capacity of both Ni-MH 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.)