Thanks John, I will give them a call this week. I use an auto jump starter and hook it up to both my starter and flight box but miss my cordless starter system. The little 7amp flight box batteries are OK when new but tend to need replacing every year and don't have the zing I need for most of my glow engines. MED, most any of the cheap starters should be able to roll over a .91. As I mentioned, the little flight box batteries you buy from tower or a hobby shop work fine when new but loose there poop too fast and the starter bogs down. More voltage really gives any starter a zing but you don't want to be rolling over an engine too long or you can feel the starter when it begins over heating. My auto jump starter is great but it's still only 12 volts, it lasts forever though and I have even used it to jump start guys trucks at the field. I do like cordless though and 18 volts is better then 12. I have been able to start some of the small gas engines with my standard starter and 12 volts, most of my own glow engines are 1.20 and they present no problems, a .91 the starter doesn't even know it's there. This is a low end starter too, something cheap I bought at Hobby People, I think it was $20.00 on sale, no need for the big starters if you have a good battery.