The JNC300XL is small, but carries a big punch. I’m an Auto Paint and Body Shop owner and there are times when customer vehicles won’t start and are too far away from the shop to connect electric (plug-in) batt ery charger/boosters. I don’t have to worry about this with the JNC 300XL at my disposal. It has gotten me out of many binds and has even started vehicles when the battery was missing. I’m very pleased with this unit and I believe anyone else will be satisfied as well.