Sam S.wrote a review of Brunton Restore Portable Power Pack on June 14, 2012
This has been a very handy unit thus far. Charge it up before you go, toss it in your pack, and if you need some extra juice for your gadgets it'll be ready and willing. Ability to strap it on to the top of a pack is key, and in my mind sets it apart from the competition. My Restore reliably holds a full charge for weeks and feels very durable. I now pack only USB-rechargeable gadgets knowing I won't need extra batteries and can rely on the Restore to keep them going.
Don't think, however, that two little solar panels like this will keep you super-juiced all the time. I always charge mine at home and use solar just to supplement while I'm out and about. I take a 3GS iPhone into the backcountry as GPS / nerd toy, and after 4-5 hours of direct sunlight the Restore will only boost the 3GS by 10-20%. Fully charge it at home, on the other hand, and it will deliver 1.75 full charges to the iPhone (w/o solar exposure). So don't take it into the backcountry empty if you intend to rely on its power. Small solar panels like this will take days of full sunlight to fully charge the Restore, but will help extend its ability an awfully long time if you charge it at home first. (And never, ever rely solely on electronics! Always take a paper map too, just in case...)
I'm also a bit disappointed in the durability of the plastic covering the solar panels -- hence 4 stars instead of 5. I've had my Restore for all of three months, have only taken it on a half-dozen trips, and it was never dropped or saw any nasty conditions or abuse. And yet, some major scratches have already formed on the plastic over both panels. Luckily the scratches aren't directly over the solar panels -- yet -- and now that I know I'm careful to wipe off debris before I fold them onto each other. I'll probably take a little piece of felt or something along in the future that can sandwich between the panels and keep them safe, but a little rubber molding around them to keep them slightly elevated from each other would clearly have gone a long way. So, Brunton, for your next revision, figure out a way to keep that soft plastic from rubbing against itself -- it's too scratch-prone!
Overall, though, I'm very happy with this little device.