The Extreme Capacitor is flawed. The capacitor produces heat equal to 50% the amount of power sold by it. If you have 1 cell producing 20 power then 1 Extreme Capacitor would produce 10 heat (50% * 20 power). If you had 10 Extreme Capacitors then you would expect to see each capacitor producing 1 heat. Sounds logical. What actually happens is the 10 Extreme Capacitors each produce 10 heat.