The goal 0 panels alone will not do an iPhone well at all. The guide 10 is the battery pack that they have that goes with the panels. I use the Nomad 7 Panel set up. It works very well. On the solar charge it will charge the guide 10 battery pack(four AA or four AAA) in about 2 or so hours with good sun. The phone charges off the battery pack perfectly. Infact it will charge the phone 2 or so times before it needs charged. It takes me about 3 hours on the battery pack to charge my phone from the 30ish percent to full charge.
I got my kit at Costco for $99. Came with four AA and the adapter and four AAA batterys. The 12volt socket adapter, a USB cable to allow your to charge the Guide 10 Battery pack from a computer, and a wand LED flex light. It also had the Nomad 7 solar panel setup with all that. Best price yet on a kit and it had more stuff than the kits at Sportsmans.
So far I have not charged a device other than my iPhone with it. But I do use the charger for the batteries in my other devices. About to buy more AA ones so I can charge my kids remote trucks batterys......they are killing me with battery consumption.
I hunt because......
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I'm going to have to look into this, thanks.
DIY til I DIE
Check amazon.com for prices too. I got my goal zero adventure 10 thing for $75 plus free 2 day shipping!