Very good. It easily keeps the car battery charged by simply plugging it into the interior socket, without needing to connect cables to the car battery terminals. For example, previously the battery had to be charged every 2 months due to short trips, and now for the past 6 months I haven't charged it at all.

I don't know if it's my fault, but I wasn't able to charge any of the devices I wanted. The review concerns the GDSuper GD-100S since that's the model they sent me.

I got it to charge a power bank and a couple of phones at the campsite with a lot of sun. In the end, it also charged the action cam and other low-power devices. It does its job very well because it is still new. For some like me who want to experiment with solar power at camping, it's a good start. However, it also needs a charge controller, at least a cheap PWM, to automatically stop the flow of charging because we almost burned the power bank :) I didn't notice how it had charged... Overall, I'm satisfied.

Ideal for its price! To charge, it needs to be constantly in the sun. It doesn't collect power for the night. It charges a phone slowly but steadily. And a power bank needs almost half a day to fill up! It's worth a thousand!!!!!!!!

Good and nice, when it's sunny it charges a 5000 mah mobile battery quite quickly, it's not 220 volts, right? Just so we know what we're talking about! Patience 1-2 hours and it's complete... if there's no sun, don't even connect it.

For the category of excellent.
You don't run out in times of need. I put it to the test even on the motor of the Easter lamb and it turned it around.

I got it to charge a 10,000mAh power bank to start charging it had to come at noon. It never charged the bank. I didn't try it again.

It works perfectly. I connected it to a power bank and a Wi-Fi access point on the power bank. So now I have 100 off-grid Wi-Fi :-)

Well, from the little I used it (to test the poco x3 charger that charged it slowly but steadily), I think it is a very good panel for an emergency hour

As a solar technician, I recommend it to you without hesitation. Perfect service, everything I saw convinced me to recommend it to you to purchase and see all its features to be sure that it will suit your needs.