"Jeff Liebermann" wrote in message
...

In my never humble opinion, there's only one correct way to charge
batteries, and that's with a "coulomb counting" charge controller. It
measures the current in, runs tests on battery capacity, and adjust
the charge current and timing as necessary. They can programmed for
almost any desired attribute (long battery life, fast charging,
conservative capacity, etc), and will compensate for battery aging.
Many of the charge controller chips made for LiIon will work for NiMH.

You might like the MAHA C9000.