I watched one reviewer change the battery in one. They're not soldered in. Problem is you have to pry off one of those diamonds on the front or back to access the screws to open the mod. I think that diamond is glued on meaning it quite likely might get broken in the process. BUT if the battery dies it's trash anyway so can't hurt to try. IF you can even get a new battery to put in it.Only maybe negative is it is only internal batt


