Requirements for Basic NiMH Charger
All NiMH chargers should have
- independent charging slots
- “smart” termination algorithm (0 delta V, negative delta V, voltage with top-off)
- thermal protection
- small or no trickle charge
Some optional nice-to-have features
- clear visual status indicator
- LED on - charging, LED off - full, LED blinking - error
- red - charging, green - full, flashing red - error
- backlight off - charging, backlight on - full, backlight blinking - error
- worn out battery detection (high internal resistance detection)
- adjustable charge current
Cheers,
AA Cycler