I am new to electric planes as so have little experience charging lipo's. I do have a three cell that came with a 'ready to fly' plane and two more bigger three cells that I have yet to charge. I have an ammo box and two chargers both of which have jacks to plug into a car cigarette lighter. Are there chargers that plug into a 110v ac supply? In view of what I've heard I am nervous about charging these batteries on the way to the field. I also hear don't leave the batteries while charging. Does this mean I have to sit and baby sit them?