If it's been a long, cold, lonely winter, then the return of the springtime sun is good news both for your mood and your collection of mobile devices. Eton's adding a portable solar panel to its lineup of portable chargers that'll keep your gear juiced when you're out and about. The BoostSolar will easily strap to a backpack and once its own 5,000mAh lithium-ion battery is charged, will let you snap on additional units for unlimited power, which you can then push out via its microUSB port. The luxury of not needing an outlet when you'
