We're using several different types of solar charges now for all of our battery needs in the jungle. The one we sell works great and we're trying some new ones. Brunton's SolarPort
http://www.brunton.com is awesome. Compact, powerful, relatively inexpensive (MSRP 95 bucks), and comes with just about every type of adapter you would need to charge anything. They are also designed so more than one SolarPort can be connected in series for more powerful applications. In fact we're reviewing this solar charger and the new Brunton GPS for them now. I like the Brunton MUCH better than the one we sell even though ours is more compact, so we're dropping our charger from our product line. Bottom line: the SolarPort is a lot better for 20 dollars more than our charger. Unlike some folks we don't have a problem admitting when someone else's equipment is better than our own, just tell Brunton we sent you if you decide to buy one
As a side note, the Brunton GPS is also the best GPS I have used from our intial tests. Very user friendly, locks on quick, lightweight, and has a built in magnetic compass independent of the GPS which saves the old GPS and Compass scenario needed for a lot of bush navigation.
Another great charger we are using is the Sun Catcher Sport from Powerline
http://www.powerqwest.com This one comes with a battery pack so you always have power even at night. Works great for recharging or powering our sat phone. During the day you simply open it up in the sun and it recharges. Both the SolarPort and the Sun Catcher have female cigarette lighter type plugs so you can use your normal 12 volt adapters for your cell phone, laptop, etc. The only problem I see with the Sun Catcher is the battery pack looks like some type of small bomb and does cause problems going through airports. Solar Chargers of any type seem to freak out the idiot security folks.
The generator Andy is talking about is a real small gasoline powered model that you can carry around with one hand. They're used a lot down there. In fact, Andy was using one to power his lodge at Panguana about 7 years ago when I visited him there. We have one of the same generators at our lodge and use it to string lights up for the night soccer games, charge batteries, and all the lighting inside the houses. If you're going deep bush though I would suggest a good solar charger and a few spare batteries for your camera.
Keep me posted on your trip. Andy is a good guide and knows the jungle very well.