The fancy chargers do some really fancy stuff now. Reverse slope and such.
I have had perfectly good results just charging nimh and nicd based on voltage.
Basically just floating them about 1.40V each.
I believe most of the 'power' goes in at about 1.35V or so. Takes a long time to get them past about 1.38V.
They may not get to 100% charge. Maybe they only get to 90%? I don't know.
But I do know they are not getting the electrolyte boiled out. And I would rather have batteries that last for years instead of worrying about that last 10% of charge.
Most of mine are Well over 5 years old. Some are showing signs of age, some are toast, etc, but overall that's still pretty good for their age (IMHO).
A lot better life than B&D VersaPack batteries of either type, in the factory charger!
We are still using the ones I posted pics of back in 2005. New camera has an internal lion bat, so not using AAs as much now, but they still work.
http://www.otherpower.com/images/scimages/2050/PV612.jpgStray thought.
Given the % of diode loss in a 1.4V system, have you considered going up to 2.8V?
It would only take about a 2/3rd increase in RPM.
G-