How about Pocketfacelift + Battery Pack 2003, thats what I have, pocket facelift does so much more then tell the battery power that its not really in the same catagory, in fact if all you want is bettery info get batery packs, if you want full screen themes, more control over the today screen, the best task switcher (IMHO), a nicer today app launcher and a descent battery monitor get facelift.
If I had to choose because of costs or something, I'd get facelift first, then battery pack 2nd.
This is a older version of Facelift you can see the battery meter:
This is a newer version of facelift but with battery pack also:
laterz