BioLite SolarPanel 5+

Even off the grid, you can charge smartphones, tablets, and other devices using the power of the sun, thanks to the SolarPanel 5+ by Biolite. The monocrystalline-cell panel will produce up to 5 watts at peak sun, and the 2200mAh on-board battery can store energy for later use. With an IPX4 rating, the panel can easily withstand a shower, and when the sun comes back out, its Auto Reconnect feature turns it back on to resume charging. The 360° kickstand can be used to prop the panel in any position or to hang it where it can best take advantage of the rays. There's a micro-USB input to charge the battery, and a USB output to charge devices. At 10.1 x 8.2 x 0.9", it slips easily into a pack.