Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: Guide 10 has a mini-pin (round) input labeled "Solar."  The Instapark 10 does not output to mini-pin.  Can I just use the USB input on the Guide 10?
Document: There are lots of ways to use the Guide 10 Plus Recharger. You can charge from a solar panel or other USB sources (computer, wall plug). You can use the unit to power/recharge things as a 2300 mAh battery backup or just to charge the rechargeable batteries which can be used separately as individual batteries. (And it's a flashlight too.
[Output Current]The Guide 10 Plus spec sheet says 1A max output from its USB port. In actual testing, I was able to draw up to 1.3-1.4A from its port - as least for a short duration (I don't want to risk burning up the power converter inside). This means the unit can be used to recharge most smart phones and small tablets.
I received thisGoal Zero Guide 10 Plus USB Power Packas part of theGoal Zero Guide 10 Plus / Nomad 7 Solar Recharging Kit. I will focus on the USB power pack in this review. [Functions]The "Guide 10 Plus" is a very versatile USB power pack. You can charge up its internal batteries (4x AA NiMH) from an USB power source, or from a solar panel (such asGoal Zero Nomad 7).
But those batteries were only charged to 50% capacity according to myBT-C2000 Battery Charger Tester Analyzer. The next time I restarted the charging process in the Guide 10 Plus, the LED stopped blinking after 4 hours, and all batteries were charged to 100% full. I still can't figure out why the charger terminated prematurely the first time.#3: I connected the Guide 10 Plus unit to a USB power source, with the intention of using it just as an LED lamp.
I do have multiple purposes for this charger and I like the fact I can recharge it by a USB or Solar input. For those with cell phones, I drained my iPhone 4s and recharged it to 100% using the Goal Zero. However, I only was able to do this one time. I drained it a second time and hooked it up, even though the Goal Zero light was green, it did not charge the iPhone at all.
By purchasing a second Guide 10 Plus, you can take a charged unit with you while charging another set of batteries, you can have the provided AAs in one and the AAA in another - just more options. The Power Packs are useful 24 hours a day; the solar panel only when the light is shining. Why not capture power while the sun shines?
[Output Energy]I connected a 5 ohm power resistor to the USB output port, and recorded its output voltage and current over time. The unit was able to generate 0.99A at 5V (or 4.95W) for 102 minutes, which corresponds to a total output energy of 8.4Wh (4.95*102/60).
[Bottom Line]Overall, this Guide 10 Plus unit works as advertised... mostly. Given its high price, I am disappointed by those design flaws mentioned above. So 4-star is the best I can give it, and that's only because I got the package for a good price during an Amazon Deal of the Day sale.
I bought this item for the purpose of charging my phone (or possibly other small devices) while on camping trips. I intend to leave it out during the day using a solar panel, and then use it to charge my phone in the evening.I've had it for a few weeks now and have been testing it extensively.
And it appears to go solid green when fully charged. This seems to work fairly well - I wish it showed this while discharging.For fun i've been powering my phone only using the solar panel and the battery pack for over a week now, and it's been pretty easy to do so.Overall, I think this is the best product for my use case and I'm quite happy with it.
Answer: Yes, as long as your solar panel is able to supply at least 0.8A at 5V, you can charge the Guide 10 Plus through its mini-USB port.