Originally Posted by Finn
I also keep a set of the Energizer lithium batteries in my camera bag, just in case the NiMH's run out while I'm shooting.
This is also a good strategy -
the only problem I see is that if you do use the lithium batteries -
although they do have a long life - it's also not infinity -
so eventually they will be "low" and there isn't an easy way to know that -
since the good thing about primary lithium batteries is that they more or less stay at their initial voltage until depleted -
which unforuntately in this case is actually a
BAD thing since you would not know the state of the used battery (ie: how much capacity is left) -
other than actually keeping a count of the number of shots taken......
Originally Posted by Finn
It's pointless to keep extra NiMH's in your bag, because they will invariably have drained just when you need them!
Agreed. Unless one charges both sets before going out on a session.
Also mentioned previously there are now the LSD (Low Self-Discharge) NiMH batteries which hold their charge (to about 85% for a year - that's about how much charge the regular NiMH drops to in one day to one month). So one can have the LSD NiMH batteries (eg: eneloop, Kodak Pre-Charged, RayOVac Hybrid) as back up.