I keep meaning to get set up for rechargeable AAs and AAAs at home, as well as solar charging in the field, for rechargeable AAs and for internal cellphone batteries. I also need a backup rechargeable battery to go along with a Samsung S6 for EDC. I'll have to look it up and see if my EDC Fenix flashlights are okay with rechargeables.

I've heard enloops are good rechargeable batteries. One thing I know I need at home is a smart charger that I can leave batteries in indefinitely without frying them.

Goal Zero seems to dominate the backpacker-weight portable solar market, but I see other brands at much lower cost on Amazon, too, like Ankar.

Aargh! Too many compatibility issues and purchase options to figure out!