In a few months, my spouse is taking a two-week guided camping tour in the Nepalese Himalayas, and will be bringing my camera (a Nikon D300). The problem is, he doesn't know whether there will be any facilities for recharging camera batteries (and, knowing him, he will probably be clicking like crazy). Does anyone here know what practical technologies are available, if any, for powering the battery charger? Are there any small portable solar systems that would do that? Or anything else? Or should he just show up with a pocket full of charged batteries?
Also, does anyone here have experience with such tours there, and would know whether electric power would occasionally be available?
Thanks for any advice,