Bought this ultra capacitor for my car audio and never installed . I had a test at the mechanic shop and it’s basically like a brand new cap. This is a heavy duty ultra capacitor with a built-in jumpstart that you can Bluetooth from your phone. It also has the capability for a high demand, audio video electronics, or any other electrical equipment in the vehicle. No need to upgrade alternator because itself is actually a battery and capacitor in one. Comes pre-charged and it has LED indicators on the top of the unit. It can be mounted nearly anywhere in the vehicle. It can fit 
