Quote:
Originally Posted by ecomodded
My car stereo's amp uses a Big cap , I wonder if they could work for a battery..
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It's not the size that matter, but the farads. Caps in audio applications tend to be big, flashy, expensive, and lower in capacity than the Maxwell units we are looking at.
As already discussed, a capacitor is not a replacement for a battery. It simply doesn't have the storage density of a chemical battery. If a vehicle had a very low parasitic drain when parked, or if supplemented with a solar charger, a capacitor could "replace" the battery.
I've been running on only capacitors since January on the motorcycle. I connect to the battery tender when I don't expect to ride in the next couple days. It cuts charging completely when it hits 14.15v, and will begin charging when volts drops to 13.5v.