There are soloar-powered battery chargers. When NBC News sent crews to the Middle East back in '91 for Desert Storm, they built these brilliant solar panel sandwichboards that charged large 14.4 volt 5 aH Anton Bauer bricks for the cameras.
It should be a straightforward thing to find someone making solar power converters. I know that Campmor in New Jersey sells some solar power units for low-draw items. The need to charge a fistful of small 7.2 volt batteries is not nearly the same power draw as the chargers I mentioned above.
I suspect that you can get these solar units ( which are thin, and easy to transport ) and get someone in the know to wire up charger connectors. That way, while you have 3 or 4 batteries with you, the other 3 or 4 spares are laying under the charger panels, happily using the energy of the sun to recharge.
There is no other way. If you are away from real clean power for 10 days, you won’t be able to shoot all of that time.
Do keep in mind that if you learn to frame and operate the camera- WHATEVER camera you get- with the flip-out door close all the time, you will save an enormous power drain on the batteries. So, you’d pull out the camera, open the flip-out door, check exposure on the nice little color monitor, and flip it closed and shoot off of the eyepiece. If you are determined that you must frame using the flip-out monitor 100% of the time, you will drain down each pack much, much faster.
Lemme poke around… These guys have some VERY nice units. If you put 12 volts d.c. into a 7.2 volt battery, bad things will happen. However, you can easily take one of the bigger units ( I mean, 12 volts but more Watts ) and wire a voltage regulator in, so that it feeds just exactly the voltage that the normal charger feeds into the battery. Then, wire in a mount and voila- good to go.
You need to consider this expense when doing the budget on this job. It is the only way to make 10 days out away from stable A.C. power.
As for the media- you will be shooting Mini DV tapes. They are digital media recorded on regular ferrous oxide videotape. The same camera you use to shoot the footage is the record deck you slave to the computer when using the edit software. That camera is used to feed in the footage ( the Import and Log feature ). Once the footage is in the hard drive and can be edited, you do not need the camera/deck again until you are ready to render the project out ( Print To Tape feature, in Final Cut Pro ).
Various softwares will allow you to render within the software, then burn to a DVD inside the computer, if your machine has a SuperDrive, or DVD burner.