Due to early winter, illness, and USPS overtime, boat got stuck outside this winter uncovered. I had grabbed the battery and gas tank last weekend and charged the battery(optima 24,5\14) and walked over to fill the gas tank ( eth free, seafoam). Grabbed some beer, changed the spark plugs in the jeep ( very needed!!) put the battery and gas tank back in boat. Started in less than a second!! Very nice product!!