I think 1% charge loss per day is normal for an NiMh; personally I've
switched to eneloops which do seem to retain charge as advertised.

The only trouble with the Eneloops, Vapex Instant's, etc. is that the
capacity is much lower (e.g., 2000mah v. 2900mah), giving a much
shorter run-time. I'm not aware of any power tools using the Eneloop-
style batteries yet, but I imagine that power tool manufacturers would
rather have the higher capacity and longer run-times, than longer on-
the-shelf time?

dan.