Need lots of homework! It would be for starting, and need st least 1 battery for radio etc. If did not start first time, its time to call the wrecker service. One quick blast of juice and its done.

You use it in place of just one of the batteries. It is used like a booster. All of Conway's new trucks have them installed in them from the factory. We just replaced one under warranty. Dang things are exspensive. $1100.00 a pop.

you could buy a good reduction starter and install two additional batteries for that $1100

zen - websites are: maxwell.com & koldban.com; read somewhere that short high burst might take some extra precautions when working with these things.

sd - "supposed to" be able to recharge itself from a battery, even if battery is as low as 9 volts, but may take a few minutes (if I understand the idea).

cowc - thanks for that heads-up! yea, I thought yellow-top Optima was expensive!

metric - less weight (for at least one benefit), koldban quoted their 70kJ capacitor for my app was 26 lbs'; advertised to last 15-20 years (they say).

miz - not trying to be sarcastic, just out for info (and I read too much!); hoping to always have a start and eliminate weight of maybe a couple of batteries and their associated reliability issues is my goal. Don't mind spending some $$$ if it is a good product and lessens the need for maintenance.

I have e-mailed the KBI folks with some questions in addition to the info they have already sent to me. It would seem the capacitor does require some wiring-in over and above what the batteries do. Will keep posting...