DOKIO 300W 18V Portable Solar Panel Kit Folding Solar Charger with 2 USB Outputs for 12v Batteries/Power Station AGM LiFePo4 RV Camping Trailer Car Marine…

I have a pop-up trailer that I upgraded with two 6v golf cart batteries. I lay this panel on the roof of the pop-up before raising it and hooking to my batteries. It works great. I have not really tested this setup for more then four days, but appears to work well. It also changes my Jackery quite well.

This review only applies to the panels themselves, I do not use the rest of the kit.First off, for those saying these don't product 300w, you need to understand solar panel ratings. They will produce 300w in more or less perfect conditions. So for example mid day late summer clear Texas sky pointed right at the sun absolutely they produce 300w (each set). I only use the panels, not the other stuff as I have a parallel cable setup with a pair of these panels and in the right conditions I get a full 600w out of 2 of these into my AtemPower DC to DC charger / MPPT charge controller. Your limitations are going to be environmental conditions, and your charge controller / power station setup. I run my camper electrical, 12v fridge, USB chargers, laptop charger, CPAP fans etc... and this has no problem keeping the batteries recharged / topped up.My only issues, and they are kind of the nature of the beast as it were are...#1. No included / build in kick stands to set the panels up to actually face into the sun directly. No big deal. Dokio has them available through Amazon, just don't forget to buy them, and carry the hex key with you...#2. Water resistance. You are NOT going to be charging up in a deluge no matter what, and Dokio claims their materials are water resistant, but immersion can be a problem. Keep the connectors pointed to the TOP of the panels, and if ponding / flooding is a possibility take them down and move them inside. Simple enough right?I opted for portable panels instead of roof top mounted panels on my camper to allow me to move the panels as the sun moves to keep them oriented to the sunlight to keep charging going. These are great for that, until some jacknugget pulls his big a-- fifth wheel just to your south giving you nothing but shade. Not the fault of the panel, and remember, portable, just move them!Liked my first set so well that I did get the second and built the parallel cable, so instead of 300w coming in at 18v, I now have 600w at 18v coming into my MPPT controller. (33-1/3 amps).This came with a simple MPPT charge controller, and a bag full of adapters for various power stations, none of which I use and I am not reviewing them.My only desire for any kind of upgrade is, I wish they made these in a 500w capacity, so that I could pair up 2 of them into a 60 amp controller and get 1KW into my camper, 600w is good, 1KW I can at least run AC for a while on...

Charged camper battery in about two hours, and plugged right into zamp outlet.

There seems to be a few versions or productions of this panel. Its missing the fabric hooks that came on other models. The connectors really need to be MC4 or XT60. SAE is archaic.During setup, simply unfolding it, you can hear it crackle as it flexes. It makes me concerned for its longevity. During setup you'll notice it lacks even the most basic of legs or stilts.All of these caveats I was aware prior to buying. All acceptable if it performs. It doesn't. The max power I've been able to achieve is approx 171w and then it throttles up and down from 140-170ish watts. This is late May peak hours and multiple positions. This is as good as it gets. Also it appears damaged. The face looks like it's been dragged across a floor and is covered in scratches(hard to see on camera).Spend a little more and get the Zoupw or another brand.

I love the size, weight, and portability of this panel. But as others have said, it is very floppy and even leaning against the car, it curls down and won't stand up. Without some kind of a rack system, it can really only be used laying on the ground or car roof. I strongly recommend buying the optional brackets to alleviate this problem.I had a problem with poor performance (~75 watt output from 300 watt panel) and originally wrote a negative review. DOKIO reached out to me and told me they are very concerned about customer service. After analyzing my panel by asking some questions, they acknowledged that there was likely something wrong with my panel and offered to give me a refund even though I was beyond my return window. They also offered a generous discount for any other panels I wanted to buy.So I accepted the refund and did order two new panels - 220 watt this time - they are shorter so won't be as floppy. And I also ordered the stand up brackets. I will write a new review when those panels and brackets are received.DOKIO is a good company that has excellent customer service and stands behind their product.