One of the worst offenders in respect of battery consumption that I have experienced was my much otherwise loved Nikon F100.
With the exception of a Kodak DC4800 P&S, which could only manage ~80 shots/battery charge, no other digital camera that I have used has been too bad. They include D70s, D200, D700, D810, Df, Sony C3, Panasonic G3, and Olympus OMD E-M1 (although the Sony was the worst of this line up and the G3 is not up to the Nikons or the Olympus). I have avoided add-on grips (except for the F100 (needed) and the D700 (got a good deal and could not resist)).
I have always purchased two extra battries with my digital cameras, and learnt the hard way early on that buying third party batteries is a complete and utter waste of time and money. Carrying extra batteries is much less of a chore than carrying large amounts of film, especially if the film has to be kept cool in the summer months, so I just accept that having spare batteries with you is part of the deal with digital cameras. The D200 and D700 were nice in that they both shared the same EN-EL3e battery.