[Jim Brierley]

I agree with all the above, however, I got into a serious discussion in a magazine a few years ago about this same thing as regarding running a 6v starter on 12 v. My opinion was half the amps. After several rounds of this argument, I put an induction ammeter on 2 of my A's and found that while the amp draw was definitely less, it was more than half. In my feeble mind I figured that it was because the power output had increased with 12v input. Just FYI