Micro Hydro Generator

We purchased a couple of your Micro Hydro Generators for a student project and have noticed that the output voltage has dropped from 3.6V to ~2.5 volts. The battery that is part of the “voltage stabilizing” circuit only measures about 2.9 volts where it should be 3.7 volts. The data sheet states the battery is rechargeable. Does the stabilizing circuit have any recharging capability? Where can replacement batteries be purchased if not?

Hi, what kind of battery and the charging board are you using?