Instruction: Extract information from the supporting document to answer the given question.

Input:
Question: Do I need anything else for it to charge with solar power? How long does it take to charge with solar?
Document: I just purchased this unit (and a solar panel) to take along on weekend camping. I like bringing my laptop camping, and wanted to have some spare power to extend how long the laptop would run. The Goal Zero advertizing for this unit says that it will recharge a laptop twice. However, I just just did a test and after fully charging the Yeti 150, this unit was able to recharge my laptop only once, before the Yeti ran out of power. Maybe this would recharge a small/mini laptop or netbook (like a Chromebook) twice, but not my full size 17" Lenovo.
This unit was originally purchased to power a C-Pap machine on our camping trips where we don't have a power hook up. What we didn't realize is that when it is not being used for the C-Pap machine we use it to charge our cell phones, camera batteries, play our music with our cell phones and Pandora. We typically charge it during the day either by power or with a solar charger so it is always full to provide all the power we need. When we cant charge it in between, we have found the C-Pap machine can run for at least 3 nights (8 hours each) of power.
This is a must piece of equipment for anyone in their own camper or car when travelling. We feel it is too heavy to pack in a suitcase to take on a cruise or a plane.We also found Goal Zero tech support to be very helpful in answering our questions about how it works best, what gets the most power from the unit and which solar unit works well with the Yeti 150. We highly recommend this product
I got mine from eBay. But I like this generator. It's a wise investment. It's a nice feeling knowing you have a backup power source to charge up your phone just in case a power outage occurs. It's built very well and I love the handle. It's firmly attached and easy to pick up. My next investment will be the Goal Zero Boulder 30 solar panel for this generator.
OK, so the name of this is SOLAR generator....but the only way to charge it that COMES in the package is the one you plug into the wall. You can spend another couple hundred bucks on the actual solar panel that will charge it. We don't want one of those, though, because when we go camping we are out doing stuff all day when the sun is out. That's a lot of high dollar equipment to leave unsecured just to charge it. (Plus, they need a warning on the box that the solar panel is sold separately.)
I ran my shortwave radio for 8 hours with this incredible device. I need to get one of the Goal Zero solar panels to round out this unit.
Absolutely love this product. We purchased it for use during a 3 day camping trip/music festival. We also purchased the solar panels that recharge the device itself. Happy with both products as a combination. It was wonderful that we could charge all of our phones using either USB port or actual power outlet and we even expanded it's capability by plugging in a power strip. At one point we were charging multiple phones a Bose speaker and a couple digital cameras. It did the job perfectly, it was able to charge our items at usual speed it would at home.
In the past week (writing as of 5/19/2014) I received a defective unit (wouldn't take a charge), sent it back, and proceeded to have the same problem with the second. Spoke with Goal Zero and they apparently got a bad shipment of batteries.Unfortunately, with no confidence that a potential third unit from Amazon would work I've been working directly with Goal Zero to resolve the problem. I'm still in the midst of that, but let's just say I've been less than impressed with their customer service.
Overall I love this company and their product. But if you are a CPAP user this battery does not have enough power to sustain a full nights sleep. I used this on a camping trip and it kept shutting off every 1 & 1/2 to 2 hours. Then after about 5 hours of bad sleep it was completely dead. If you need this for charging a cellphone or some other small device this is the product for you. If u need more power, get the bigger battery.
The Yeti 150 can run a ResMed S8 CPAP for a night (with the humidifier power circuit disconnected), but it takes three days to recharge from a Goal Zero Nomad 13 in direct desert sunlight. It also can't handle a few months unplugged in storage, which is a major problem for an emergency power product. Now I need a $40 replacement battery which is no longer stocked by Goal Zero or Amazon if I ever want to use mine again.I ended up getting a generic deep-cycle lead-acid battery and an external inverter to use instead of the Yeti.
Answer: In Colorado, a bright day, this took with NO power reading all day from 6am-9:30pm for a full 100% charge.  At 1pm I turned it to face west.  Traveling though, with use on ipads and lights, it seemed to take 2 days of charging.  Very good charger and unit, you can always add an extra solar cell if you need to.