![Image](https://live.staticflickr.com/4881/45488711615_8760bbe623_m.jpg)
Rechargeable NiMH Batteries (AAA, AA, C, D) and a Solar Battery Charger
https://www.grandpappy.org/htcharge.htm
If you are camping, or if the electricity is off while you are at home, then battery operated radios and flashlights are really nice things to have.
If you purchase rechargeable batteries then you could recharge your batteries using the sun if you have a solar battery charger. --- CONTINUED at LINK ---