I received a 20 farad amplifier today for my car audio system and It's charging at the moment. I have a circuit breaker instead of a fuse because my systems to big for just a fuse, so i have the circuit breaker off and I have a light meter connected to the + battery and i have the other side connected to the wire on the side of the breaker that is going to my amp. When i put the Volt meter to it to try and read the voltage in the begging it would say 4DC, as time went by i checked again, it said 6DC. On the manual it says working Voltage 11-16DC. Does this mean i have to wait for it to slowly creep up? And because it is 20 farad is that why its taking so long? I've been told the normal 1 farad that are sold in stores charge for a bout 5mn, this things been goin on for about a hour or two. Please No sites or links, i just would like a direct answer. Thank you