I have a power supply that I used with my old chargers. I recently, as of last week, got back into the RC game and am completely lost! What does 5c even mean and how does it translate into charger specs? I got talked into buying a Mugen MBX6 Eco last night while visiting some old racing buddies and now need to buy a couple of 4s packs. Will I need the DC power supply to charge one of those?