I’m often shooting in the backcountry away from power, or maybe in my trailer without power hookups. My solution to power on the run is Goal Zero. Goal Zero makes a variety of solar powered batteries and panels, and they work great. I’ve used the Sherpa 50 on countless backcountry trips. Combined with the small solar panel, you can backpack with this unit and have enough power to recharge camera batteries or your phone. For bigger devices like my laptop I use the Yeti 150 (pictured above). This can charge my computer twice, or my camera battery about 12 times, before I need to recharge it. You can use a Goal Zero solar panel or just plug it in at dinner when you go to town. If you need power on the run, check out Goal Zero. The Yeti 150 sells for $229.