isDS - low batteries.

[Jim Hemenway]

The nimh batteries in my isDS go low very quickly when I've been out 
shooting in 20F or lower temperatures... especially with auto bracketing.

I get a dead camera after about 50-60 jpegs.  And, a halfway empty 
battery icon after about 20 RAWs.

Does anyone know if this is normal?
I have one of these:
http://www.precision-camera.com/page/PCV/PROD/102783
It came with my "long in the tooth" and very used Kodak/Nikon DCS-460. 
Does anyone know first hand if it can be used with the isDS?
At this point, it's probably worth more than the DCS-460.

Thanks in advance,
Jim