Of course, you can re-charge batteries in the field, provided you can find a charger to fit the battery. You don't specify your camera, but it will be best if it uses AA- or AAA-size batteries. A number of chargers work for those, such as the ICPG Model 04041 ($50). However, most digital cameras use odd-sized batteries. For those, you may have to buy a solar charger and THEN an adapter that will hold the battery and plug into the charger. And you'll also need to be sure the charger will handle the lithium-ion battery your camera probably uses, versus the more common NiCD or NiMH batteries. You're probably going to end up in Radio Shack for this one, or maybe Fry's Electronics.
But, just keep in mind how convenient your camera is, versus carrying all those nasty rolls of film that will last for months unexposed, store better images, and keep for generations!
Support Outside Online
Our mission to inspire readers to get outside has never been more critical. In recent years, Outside Online has reported on groundbreaking research linking time in nature to improved mental and physical health, and we’ve kept you informed about the unprecedented threats to America’s public lands. Our rigorous coverage helps spark important debates about wellness and travel and adventure, and it provides readers an accessible gateway to new outdoor passions. Time outside is essential—and we can help you make the most of it. Making a financial contribution to Outside Online only takes a few minutes and will ensure we can continue supplying the trailblazing, informative journalism that readers like you depend on. We hope you’ll support us. Thank you.