If you hit the outdoors a lot, keeping an energy source handy can prove vital for both survival (read: lights) and a more comfortable experience (read: cell phone). Disposable batteries can work but could prove costly if you tend to spend much time in the outdoors. Additionally, running out of stock can force you to cut your trip short – a real bummer.

A good idea is to keep a personal power pack, such as Solardyne’s popular Personal Utility Solar Power Pack. Designed for the rugged outdoors enthusiast, it’s a great unit to keep around whether you’re hiking up a trail, camping on an uninhabited beach or backpacking through country roads. It can also prove useful as an emergency power unit at home in case unexpected outages occur.

The Personal Utility Solar Power Pack is a complete set of everything you need to enjoy portable power that’s both effective enough to last you adequate periods of time and light enough (38 lbs) to prove less than difficult to bring along. The whole kit is set up in a backpack that comes with a purchase of the unit.

The setup includes a foldable 22-watt monocrystalline PV panel, battery controller fitted with appropriate charge indicators, sealed battery (maintenance free), inverters, output ports, plugs (various options) and an 8-watt DC lamp. Chances are you can leave some of the parts when actually on the road (save for the ones you need to use) so the 38 lbs can be cut down to less. With all parts in the bag, dimensions are 17.5 inches (height) x 10.5 inches (width) x 10.5 inches (diameter).