Ken, You won't get any heat out of them for your E/Pcs. PTN. If you check out the name of the Co., you'll see it's marine supplies, not "TOYS'R'US".
Paul, That's why I mentioned, NO SMALL BATTERY'S. You can lengthen the fig 8 cable to reach your car, if it's close enough, like I did. If not, then you'll have to buy a
BIGGER battery.