Re: (acrobaticfish)
We commonly use these on race cars, where 20 pounds is a serious weight savings, and the compact size allows flexible location ( like the smuggler's box in early Porsche 911's). They work great; keep it on a tender, don't overload or abuse it, - cranks every time. I've seen them installed on daily drivers, but they require some care and planning. I wouldn't want to rely on this to crank a v8 that's been sitting outside for two weeks in sub-freezing weather.