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I use a 2kW array that I paid $10,000 for...
Could you be so helpfull to give a fu..... link ?![]()
All the solar chargers seem to include their own batteries, which is environmentally stupid. Batteries take a lot of energy and resources to make and are difficult to dispose of afterwards, when they reach their end of life after just a few years.
So if you're doing this for environmental reasons, you're barking up the wrong tree.
I doubt very much whether a small series of solar cells (as big as a ipad case) would be enough on their own to charge one of the new iPads. You'd literally need a roof-based set of panels for that kind of power, or at least if you wanted to charge quickly. Remember that you couldn't charge at night either. You'd have to charge during the day.
Could you be so helpfull to give a fu..... link ?![]()
Lol. Don't you cuss at me! I was only trying to be ridiculous as solar charging an iPad is ridiculous.
I'm a minimalist so I believe that if you're going to go with a solar iPad charger, then it should be without a built-in battery, to keep it as light as possible and no battery to worry about dying in the long run. I've found a 12 watt unit rated at 2 amps using very good quality panels (monocrystalline) at 17-18% efficiency which is very high. If you want to charge your iPad via solar take a look at the following link. To me at that price, it's a very good deal.
http://www.portablesolarpower.biz
I've tried a lot of these solar charger devices and most of them are quite disappointing but the one above would seem to be the only one I'd consider trying with an iPad.
You have tried a lot of them and then you recommend one that you haven't tried out ?!
Solar panels have to store the power first, then you access the power. They use specialized batteries that can be refilled. These aren't just off the shelf batteries. And you surely don't need an entire roof array to charge your ipad, a small panel hooked up to a single battery would be enough. Such a set-up could cost around $600, or less.
If you have an inverter system, with battery backup, once the battery array is charged up, the power can indeed be used at night. There are systems like this all over Africa where power outages are common. These systems start at around $1000.
Uh, you need to read the specs.Why pay $300 for 8 Watts of Voltaic when you can get 7 Watts of Goal Zero for $90 on Amazon?
http://www.goalzero.com/shop/p/79/Guide-10-Adventure-Kit/1:1/
I use this and it charges my phone in 2-3 hours, while being highly portable. Pretty sure it provides enough wattage to also charge the iPad.
Uh, you need to read the specs.
The iPhone has a tiny battery (5.3Wh for the 4S) compared to the iPad 2 (25Wh), and the iPad 3's battery (42.5Wh) is almost twice as big as the iPad 2 battery (capacity-wise, not size). Not only is the Goal Zero (10Wh) a 5W charger -- which is fine for an iPhone but sucky for an iPad, which likes 10W but still takes a long time to charge -- but you'll probably get less than half an iPad 2 charge out of it, and just a fraction of an iPad 3 charge (this also assumes that you're not using the iPad during charging).
IIRC, the Voltaic Systems V39 battery should give you most of an iPad 3 charge (I'd guess maybe 80%+). Also, if you're skilled in electronics and do not need a case, Voltaic has a solution in the $190-$220 range (6W vs 8W charging).