FlexSolar 40W Foldable Solar Charger, USB C Portable Solar Panel, PD2.0 QC3.0 DC Ports, IP67 Waterproof ETFE Power Emergency for Camping Hiking, Compatible with Smartphone Tablet Headphone Laptop

I have used this to charge a Anker Prime 27,650 mAh Powerbank, it charges at around 25w which isn’t 40 but it’s still good. (I have only used the USB-C and USB-A, I am yet to use the DC 5521 (next review I will have). The output is more that what is said by FlexSolar which is great, no complaints there. It is a little expensive but for the purpose of being portable, it’s great.Very easy to use, it even has a red light which activates when the solar panel receives enough light to create electricity.Updated Review with DC & Anker C200:Yesterday, I charged 90% in a full day which adds up to 54,000mAh / 60,000. Keep in mind I also charged a full phone which adds up to around 3,500mAh. The solar panels are pretty decent, on a good day, in a good position you could get up to 31w through the DC cable. (It is a DC5521)I do consistently get around 25w in full sun, no clouds at around 90 degrees.It is a decent panel which does require strong amounts of sunlight. If you have the extra £10 (when on sale) I would definitely prefer to get the 60w rather than this 40w since the output is around 62% than what is claimed.

I recently purchased the FlexSolar 40W Foldable Solar Charger, and it's been a game-changer for my outdoor adventures. The charger unfolds into six panels for efficient output.The USB-C port with PD 2.0 and QC3.0 ensures fast charging for my devices, and the IP67 waterproof rating means it cam handle unexpected rain. The ETFE material offers high light transmission and durability.Overall, this solar charger is efficient, portable, and reliable. Highly recommend for anyone needing a dependable power source on the go!

It should be noted that 40w is under lab conditions. In reality panels heat up in sunlight which reduces their efficiency and thin portable panels rarely give the rated value. In direct UK summer sunlight around 25 Deg C, I get about 12W max out of this kit. That is still very useful and can be used to charge up most small-medium devices, medium power banks in say 6 hours or so or more. I like that these are portable. One thing to not too is that USB A connection and cable will limit you to around 3W, so best to use the USB-C connection to get upto 20W+ etc.

Great piece of kit. Does exactly what it promises. Fast charges all of my devices in hazy sunshine and slow charges in slight shade (see photo 2). Also slow charges in dull cloudy weather, if you're desperate for some charge to make a call, etc. Those who say these don't work must not be placing them at an optimal angle to the sun. Make sure that you monitor the sun's position and use the carabiner hooks to mount accordingly. I've just kept all of my devices running through the Isle of Man TT in very changeable conditions and would strongly recommend this product 👌🏻

Broke after a week, was mounted on a 60 degree wooden pole and stopped working shortly after. No rain during this period.

I haven’t used this yet but assuming it actually charges then the build quality and portability are awesome.

I was pleased to find that this panel does not have glass panels. This is a serious plus as they live in my backpack, they even have a little flex to them. The panels are actually embedded in what seems to be a solid rubber so they don’t get ruined by rain! When out in full sun this panel charges my phone quickly on a type c fast charge cable, impressive.Over all I would say the panel is great value for money, it’s robust and can handle the outdoors easily. Folds up to the size of an a4 sheet of paper, just thicker obviously. If 40w is all you need look no further, it’s been helping me for months.Lastly, if it’s a little overcast they still deliver power, just not under full thick rain cloud!

Ideal 40 watt portable solar panel. Topped-Up until fully charged a USB key ring torch, followed by a small pocket DAB radio and then 2 x 18650 batteries. All these products had more than half a charge prior to being connected to the Solar Panel charger. The 40 Watt solar panel easily charged these items to100% over the course of a day using either the USB-C (PD) or USB-A cable. The 6 Solar panels fold down to A4 size making it very compact. A quality item that works great in the UK summer. Good piece of mind back-up when you require a power source.