moke i've got some 1600 mah cells from 1999 that are still part of my production stable, albeit they're only used to power the d8, which feeds on four cells which makes it more forgiving than the m1/d100
i haven't tracked how many recharge cycles they've seen, but ... lots for sure.
i'll only ever feed my SBM1 fresh(er) nimh cells though. even with 2200 mah cells i can only get a reliable 2 hours, maybe 2.5.
folks who still spend their children's inheritance on lithium cells ought to reconsider! i've been using nimh exclusively since 1999, and how much money have i saved by not running lithiums? a couple of thousand dollars easy...