I bought a Fenix TK72R from Vinh. Love the light still. However, both of the batteries I have for it (one being a newer one purchased from Fenix) will not fully charge properly. They will stick at somewhere in the middle for days while I try to charge them. Since the batteries are proprietary, I can't pop them into one of my reconditioning chargers.
Any suggestions? Maybe there's a way to rig a wiring configuration to a charger?