[Upgraded] FlexSolar 60W Portable Solar Panels Chargers QC3.0 USB-A USB-C DC5521 8mm Output Foldable IP65 Waterproof Power Emergency Camping for Small Power Station Generator Tablets Battery Packs

Wow!! This thing is amazing! Incredibly light weight and fast charging. I used it on a 7 day backpacking trip to charge up all my devices including cameras, battery banks, pones, headlamps, watches and more. It would charge my phone from 40% to full in about 1-1.5 hours. It’s a total game changer. I charged my GoPro battery probably 10x in those days and never needed to use my spare batteries. I was able to film time lapses and charge the battery of the GoPro at the same time ensuring I still had a full battery after the Timelapse to video something else. It’s crazy light weight and easy to strap on to your pack when hiking. My only complaint are two things: 1 - I wish it had two more usb c or an output ports to charge 1 or 2 more devices simultaneously. 2 - I wish it had a Velcro or rubber strap to keep it closed. It fine to put inside your pack but I found times that I wanted to leave it on the back of my pack but folded up and stowed position rather than hanging down in charging position. There’s no way to do that as there’s no holes in between the panels to connect the provided carabiners. I used a piece if bungee cord in my pack to do the trick and found a large rubber band when I got home but it would be nice if it came with something like a Velcro strap or rubber band to keep it closed. (See pic of my upgraded band)

The latest 20 watt very lightweight and is finally just what I wanted. It has a little bit more amperage and is a little lighter than the previous 20w panel. Look for parallel aluminum collector lines in the panels, the older models don’t have this. It works surprisingly well in low light conditions, a slight shadow gets about 0.5 amp , no shadow but bright sky about 0.3 amp. Here in Alaska it gets about 2 amp under ideal conditions, but further south I would guess about 3amp in the tropics. The connection box has both USBA and USBC 5to 12 volts and as with all fold ups, don’t fold if you don’t have to because this is where it would eventually break, everything is water proof solid state.

They advertise 120 W output, on a bright sunny day without any clouds, at the most perfect angle, and in a large open space, my power bank showed all the way up to 135 W of continuous input. It can produce above what is advertised, well done! A very slight change of angle by only 15 degrees can instantly drop it down to only 60W, and even a tree branch far off in the distance can drastically reduce these numbers. The electrical connections on the solar panel side have rubber O-rings, and fit very snug, it does appear to be water resistant on that end, the end that you plug into your power bank, have no water resistance. The stands it comes with would only be useful in a ZERO wind situation, but, and are even a bit tricky to balance with no wind lol, I think that is pretty obvious from the pics. The case it comes packaged in is nice, and it all folds up compact and light. I would say it is exactly as advertised, and performs as expected, for a decent price.

I'm a super long distance hiker so I need reliable power to keep my devices going. I tested this the other day with a 5000 mAh battery and it went from 0% to 100% in less than half a day. I'll be taking it through Montana in July hanging from my backpack on a 600 mile hike to put it through a real life test. I'll update my comment afterwards.

I've been testing four of these FlexSolar 120 watt panels with a LiFePo4 2 Kwh 2000W Pure Sine Wave Solar Generator/UPS that can handle up to 500 watts of solar panel input. ( @ less than 15Amps and less than 48V ) The generator will also take an additional 1100 watts charge from the wall, but I have a timer between it and the wall socket so that it gets 110V charging power for a couple hours a night, in case it didn't get enough sun to fully charge it during the day. This lets the solar generator charge and run with power from the panels during the day, but makes sure it gets a full charge once a night from the mains, just in case.FlexSolar's site says these can be wired in series and/or parallel, but they don't say how many would be the maximum. Interestingly, they each have a little red light that will turn off if they are not happy with how they are connected. (Disconnect and reconnect them properly, and the light in the center of the panel's junction box comes back on.) Wiring these as two parallel sets of two panels in series, their open circuit voltage exceeds my generator's 48V input limit by a couple volts, but in actual operation their combined voltage isn't even close to threatening to do that, so I'm declaring this combination a functional success.You can see in the pic that I have my 4 panels each hanging vertically, yet I've seen these manage to put out just over 110 watts each in this orientation (442 watts max, so far today). It seems they really ARE 120 watt panels and would happily give me the missing 10 watts each, if I would just point them at the sun.This setup is powering my home office, and this review, with 414 watts of solar generation as I write this.The performance of these panels exceeded my expectations. Hanging them this way, though makes me wish the top two grommets were a bit more solidly reinforced. Still, 5 stars for these with their nice stands, their small form factor compared to their actual output, and their all weather durability.

This has no problems charging my Jackery in a short amount of time. In the sun I have seen close to the 60 (high 40s to low 50s) advertised watts input into my power station. Great product.