My Wismec Reuleaux RX200 is reading the wrong voltages for the 18650 batteries. I put them in fresh off the Nitecore D4 reading 4.20 Volts (which is really 4.16 Volts) and they read 3.77, 4.50, 4.16 Volts. Unfortunately it's outside of the warranty period. Any ideas on what went wrong and if it can be fixed?