I have one from costco. Very handy works well, recharges easy, multiple jumps per charge.
For some reason it seems weird to jump a vehicle with it then charge it back up with the same vehicle. One of the best things to carry in a vehicle.
I also have the one from Costco and it works well but remember to keep it charged, mine sat unused for over a year and when I needed to use it barely turned over the V6 I was jumping. Now I pop it on the charger ever so often just to be sure.
Had the same issue with the older big ones, when needed a co-workers big unit barely got the job done because it has sat in his trunk for 2 years...
