DOKIO Foldable Portable Solar Panel 100 Watt 12 Volt Monocrystalline Solar Suitcase with Waterproof Charge Controller

**Update - I reached out to Dokio support 9 months after purchasing to request support for the controller. They shipped me a new controller and leads within 2 days, which solved any issues I had as indicated with my review is the controller below. Excellent customer support, thank you**This is not a bad solar panel to be fair, but there are better options out there for a 200W portable unit in terms of size and efficiency.It is very large and bulky, and the design means the solar elements are facing outside when packed up, which isn't ideal. But it's self supporting, and the large bulky size means it is less likely to be blown over when in use.It's rated at 200W, with the label on the rear of the panel says the rated current is 11.13A @ 18v. This means, with a good controller, you should expect a charge current of about 14.7A into a 12v (13.6v) leisure battery. In reality, I've only managed to pull a maximum of 10.2A from the unit in very bright summer heatwave sunshine (this is measured after the Dokio PWM controller into a 13.6v leisure battery, so 140W roughly), and typically it's about 7.5A - 9.1A in bright sunlight, so on par with some of the better 120-150W units. This will charge a 100Ah battery in about 12-13 hours assuming you have the sunlight strength all that time. When connected to a better MPPT controller, output does increase by about 10-15#%, but it's still not 200W. So overall the panel is good but not exceptional.Whilst the solar panel is fine, the charger PWM control unit is not so great with its user interface, although it is quite efficient in finding the power for a cheap PWM controller. It's completely unintuitive, not helped by the instructions that come with it and a generally bad interface design, unlike the previous Renogy unit I used. MY PWM unit also doesn't show the current supply correctly, it was indicating no current supply from the solar unit but a quick check with a multimeter before the controller and at the battery showed it was actually supplying about 8A. However I may have a faulty controller unit.On the useful side, the PWM unit will power a light source and two USB devices directly from it. The PWM controller isn't, however, weatherproof and needs to be positioned 'indoors', which is a shame since ideally one would stick this onto the back of the panels.The package comes with a handy cover, which is fine but it's pretty thin and unlikely to last long looking at the stitching!So overall this is OK but not amazing, typically on a par with a good 150-170W panel, but it is solidly built/bulky and heavy as well. But it was decent value for money at 115 quid to be fair. I've rated it 5-star because 4-star would be a little unfair because it works reasonably well and it's very good value if you can get it for the price I did, in reality it's a 4.5 star from me overall 👍

This set up is perfect for me, the power output even in low sunlight conditions is perfect, I run 3 096 sized agm car batteries and it keeps them topped up no probs running fridge lights chargers tv etc etc, nice travel case my only gripe is transporting them, when collapsed the solar panel is facing outward it would of been better inward to protect them a bit better but I just put it all in the box it was delivered in with some foam and had no issues, the controller is easy to use it comes preset to just connect up and charge, all in all, great set up, great price and performance, recommended

Arrived promptly, well packed,good quality, sturdy but light enough to move. Seems to add trickle charge of 8 to 15w lowest on cloudy day, fine for charging phones etc. Still working out if it keeps my leisure battery in good condition whilst using compressor fridge 24/7 in my van.

Brought for using the caravan off grid. Kept the caravan battery topped up well on a recent trip and we like the handy usb ports to charge phones etc.So far so good. We have two more trips planned and see how it does then.

Works well and less complicated than I had feared!

bought on prime day 89.99 worth it at that price.

See heading.I'm not sure what the "bad" reviews are on about. Most seem whinging about extremely minor things, like the leg a a little bit awkward to set up (they're not unless you have 6 fingers on each hand) or the controller is NOT waterproof (It's clearly stated it isn't. Maybe spend 5 seconds reading the instructions and the sales pitch on Amazon?)Anyway, I bought a 3 meter extension lead as the one that comes with this kit s not long enough for me. Not an issue. Also bought a longer controller to battery lead (One meter max as stated in instructions) again because for my purposes the included one is too short.Made relevant hole in caravan battery compartment to slip lead though. Attached to battery terminals. At camp site, attached battery, checked controller, which was working. Then attached solar panel and hey presto, it started charging the battery. Was a cloudy day with no direct sun.Over the five days I was at the festival, this kit kept my battery charged so I have no problem running the lights all night, had I so wished. Didn't need to make any adjustments to the controller whatsoever.The only question I have is, what is the downside if I have a lead longer than 1 meter between battery and controller? I could do with a longer one so I can munt the controller where I can see it inside the van, instead of it being under the seats.OK, bag isn't best quality, but what you gonna need it for? Backpacking with this kit across the Alps?Other than that, only time will tell how long it lasts.