You really should use it with the ground plug but, but unless there is something peculiar or inherently different about a laptop charger plug, and there could be, you should be able to fix it for a couple of bucks. Go to the hardware store or someplace like Hope Depot and by a new, replacement 3 pronged plug, it might cost you like $1.89 or maybe a little more. Then cut the old plug off, it best to do it with something meant for that kind of thing like wire cutters, a pair pliers with a wire cutter on in rather than with scissor or a kitchen knife or chewing it off with your teeth :-) because it better to have a clean, straight cut at that end. You shouldn’t even have to strip the wires because I think most or at least many of the replacement plugs have little metal teeth in them so that you can open up the slot, put the cord into the slot and and when you close down on the cord, clamp it shut, the metal teeth cut through the insulation and make the connection with the wires. Easy as pie. If you have a nice, friendly little neighborhood hardware store like I do they might even do the repair for you, mine does that kind of thing.