Lets say we have two batteries, one that is 4.2V with a capacity of 500mAh and another 8.2V battery with the same capacity. What i cant get through my head is when i want to charge both batteries at lets say 500mA, woudnt the 8.2V require twice as much power because the voltage input will be bigger(twice as much) and P=VI. I know that it wouldnt, but could someone explain to me why that is?
thanks
thanks