Photo via press release
The Joos Solar Charger makes some bold claims. First, the company states that it generates 20 times the charge of other personal solar chargers on the market. There is no data on their website showing exactly what numbers they're measuring, so we can only assume they're talking about chargers with similar sized solar cells, and not personal solar chargers in general. The Joos can deliver 2.5 hours of talk time on your cell phone for every one hour of sunlight it sucks up. Also, the replaceable battery holds enough to charge most cell phones four times over. And if that weren't enough, the company also wants to prove it can work in all sorts of conditions. So they plunked it into a tub of water and put it in the shade. Check out their video after the jump.
Of course, they didn't tell us how much charge it was generating while in the shade and underwater. While most chargers will still pick up a charge when out of direct sunlight, it's next to nothing. There's no way the Joos maintained that 1.7-1.8 watt charging rate while in that tub in the shade.
Still, it's a good point - if you're in an area with fickle weather where the sun is in and out of rain clouds all day long, this could be a great charger to have set up to gather what energy you can when it's available.
Whether or not it actually charges at 20 times the rate of other similar chargers...well, that can only be proven through testing, which we haven't had an opportunity to do yet. It's quite the claim, especially for a charger priced at a competitive $99.95. It isn't on the market yet, but you can sign up for an email notification when it comes out in June of this year.
More on Personal Solar Chargers
Buy Green: Solar Chargers
7 Portable Solar Laptop Chargers Worth Considering
CES 2010 - Beautiful Freeloader Solar Chargers Finally Hitting the US
Are Solar Chargers Turning Into Flowers? Beautiful iPetals Concept May Set Trend