Jerry, I don't know about specific products, but you can't pass enough current through the cagarette lighter to start a car if the battery is dead. Usually they're fused for about 20 amps and it takes well over a hundred amps to start most cars. All you can do is push a heavy charge into the battery for a while and get it charged to the point where the battery its self can deliver the necessary current to start the car.
So, if any product advertises it can start the car immediately through the lighter socket, it's a flat lie. How long the charging process may take depends on how dead the battery is. tom
