Originally Posted by NoRacer
They are NiMH, so yes. But, they do have a finite number of charges before their performance starts to degrade--something like 500 charges. The charger for them will automatically cut off once it's run it's cycle.
I've had mine for a couple of years and they still seem to work just as long.
Recharging NiMH batteries after only partial discharge can harm them. It causes crystal formation on the Ni side which reduces capacity (the "memory" problem of NiCd). It's not as pronounced as NiCd but it will reduce capacity over the long run. For all kinds of information on battery maintainence go
here.