Tablets, electronic readers, cell phones, MP3 players, handheld video games, GPS devices—ultimately, almost no one goes anywhere these days without at least one tech gadget. Even dirtbaggers are rockin’ iPads. With so many gizmos, powering up becomes an issue, and I can almost guarantee that illegal camping spot where you parked your 1988 Westfalia doesn’t have an outlet. Enter the Goal Zero Guide 10 Plus Mobile Kit ($129.95, goalzero.com), a nifty way to literally recharge your batteries. With a petite solar panel, a battery pack that recharges four AAs at a time, and a USB outlet, this kit has you covered. I used it during a cross-country road trip from Colorado to Alabama: Just set it on the front dash and go. After I’d recharged my iPhone almost two full times, the solar panel rejuiced the battery pack within about eight hours despite a classic Southeastern overcast winter sky. The kit is light (about 6.5 ounces without batteries) and compact enough to pack in for multiple days in the alpine backcountry. You can also charge the battery pack straight off your computer in eight to 10 hours, according to the manufacturer. —Julie Ellison