My camera takes 4xAA but after 2 weeks any charge has usually drained away.
I tried some AA low-discharge batteries , the ones that claim to hold their charge for a year and they are much better.
Uniros Hybrio, Ansmann Max E, Sanyo Eneloop and more here
I managed to keep them topped up with a solar charger but eventually had to use the USB socket of my solar charger to recharge them fully at a campsite.
When it comes to SD cards, I take several so a failure in one doesn't destroy all my photos. I keep the spare cards in a neck pouch with my passport/credit card and other Do Not Loose items.