I could be wrong but I don't think there are any batteries in them. Funny thing is my double flame Xikar just stopped clicking last night after a good 2 year run with it. Don't try to fix it yourself or toss it by any means. Go to their site and print out the warranty form because they have a lifetime warranty. It will cost you just a few bucks to mail it back to them, and they will fix it and most likely send you a brand new replacement. I have done this with 2 lighters and 1 cutter so far. This is also why I only buy Xikar, they stand behind their product.