[John S Peterson]

I forgot to mention to watch out for your Optima type batteries...usually these type dont like very high amp charge rates found on large shop type units. Stick with low apms for longer periods of time, that works better on all batteries anyway. Also alot of people when they "jump start" their dead car they drive it for a while to charge the battery. That is the worst thing you can do for the charging system. It was designed to replenish only and it seriously overloads the system, besides it would be difficult to fully charge a really dead one, so the vehicle should be taken somewhere and the battery properly charged........you heard it here...........

John