I bought this because after using many Coleman products over the years when camping I've always been impressed by their brand. But this was a disappointment. It just never held a charge. I emailed Coleman and finally received an answer from them -- the day after I had packed it up and posted it for return! (Their advice: to make sure the prongs were fully pushed all the way in before turning it on.) Duh -- did that! It would have been helpful if troubleshooting instructions had been included. The only thing that came with it was documentation on where/how to recycle the battery.