Re: "Transformer" available to jump 6 volt car with 12 volt battery ?

Posted by Rusty O\'Toole On 2010/7/4 23:45:28

There are 2 safe methods. First is to take out the 6 volt battery and replace with a 12 volt. Make sure radio, lights etc are turned off. Do not grind and grind the starter, you do not want it to overheat. 5 or 10 seconds OK then let it cool for a minute.

Second method disconnect the live side of the 6 volt (neg in the case of the Packard) clamp the jumper cable on the cable and the other jumper, ground on the motor. This cuts the 6 volt battery out of the circuit and eliminates the problem of overcharging and possible explosion. When the engine is running quickly disconnect the jumper and stick the cable back on the battery, the engine will not stall if you are quick.