LixadaSolar Panel USB 7.8W Portable Ultra Thin Monocrystalline Silicon Solar Panel Charger USB Port for Cell Phone Outdoor Camping Climbing Hiking

I have this permenantly powering an Aqara Roller Blind Driver, and it does an excellent job at keeping the battery constantly topped up. It’s thinness is a big selling point too… it sits perfectly flush with the window and doesn’t get in the way whatsoever.

Bought this to keep charged on trip to Mt Everest. So far on trial in snowdonia it’s worked well though it needs direct sunlight cloudy days it is not so good. See what it’s like in the Himalayas late April!!

First surprise: the actual size which has been given in the description, but one does not always reads all things (I own another solar panel which is 3x the size of this one).Second surprise: my panel did not include a cable - again maybe something that was in the description, I have missed (again).Third surprise: not all USB cables seem to fit, but managed to find a suitable one in my collection.So, placed on the windowsill (1st floor and very sunny aspect) and connected to a power bank and it started to charge it. Also seems to be charging on not so bright a day.Have since charged my mobile from the power bank and can only say: it works and (so far) I am very pleased with it and can recommend it. Will update should I find out more .

Dislike: unable to attach suction cups to the solar panels. Also you will need to purchase a power bank WHICH was not mentioned.

On a very warm sunny day when working in garden, I put phone on this at 54% battery at 10am didn't touch phone till 4pm phone was at 42% didn't do a thing.Following day very sunny again I connected a powerbank at 9am that was on 72% left outside in direct sun to 6pm powerbank was at 72%.Either a falty unit or as I expect just a poor product. Didn't work at all wouldn't recommend.