ECO-WORTHYSolar Car Battery & Trickle Charger 5W Solar Panel Power 12V Batteries Maintainer Portable Waterproof Built-in Blocking Diode for Automotive Lawn Mower Camping Car Boat Motorcycles Truck

Great little solar panel. I’ve had these on my two trailers for three years now. It has maintained the batteries and never once over charged them.

This product is a game changer! I used to have to bring my zero turn mowers battery into my garage in winter and put it on a trickle charger. It was was a hassle due to how far my shed is in the back yard from my garage. I had used this product this last winter and my battery was fully charged and ready to go for this spring! I love that I don't have to take the battery out to keep it maintained now. I highly recommend this charger!

It seems to be functioning fine, truly can’t know for some time yet.

I hooked this unit up to my Polaris Ranger, which had a kind of low battery from sitting to long. It turned over and started but sounded weak. I hooked up the unit, the next day I went to start it, completely dead, nothing. I put my multimeter on the alligator clips with the solar panel in the sun, checked voltage in DC mode, it read 18.3 volts. That is a lot. Tested on AC mode, 3.4 volts. I am guessing my battery terminals are carroded or the battery just happened to give out. I put the battery on a real charger, did not show any problems as far as sulfated or cell problems. I am puzzled.EDIT- I placed the solar charger onto the same battery, left the battery uninstalled outdoors with the solar charger hooked up, after charging the battery on a regular charger to full charge. I tested the voltage over several days, morning and evening. The volt meter showed 13.1 during the day, 12.9 at dark. This trickle charger works fine. I am going to order 2 more, one for my RV and another for a generator with a battery in a remote location. The price has gone up on me as the sale is over, my bad. Good unit!

The first order arrived used and missing parts. Amazon processed the replacement and provided for it’s return.Weeks later, during which the item was still being sold but for a dollar more, they eventually sent out the replacement. It arrived with clear packing tape added to it over the security sticker that seals the box.Seemed to be new, with all its parts except that the only version of the instructions was in German or Dutch which I cannot read. So I MATCHED EVERYTHING TO THE AMAZON PAGE but missed the step about removing a clear covering “AS THERE WAS NO COVERING OF ANY KIND”, so I reached out to the seller through amazon and received NO RESPONSE FROM THEM.So I figured as it wasn’t rocket science, I could get it set up, and the next day I tried to suss out the seemingly simple set up, but I missed the GERMAN/DUTCH NOTES about not leaving it installed when starting or running the engine “AS I WAS RUNNING THE A/C IN THE 107 DEGREE HEAT” performing this simple set up.- Reference from .pdf - “Before starting the motor, remove the cigarette lighter plug from the socket and do not use this charging method while driving. The vehicle’s motor may produce an electrical surge that could damage the solar panel.” -.“NOW, NOT KNOWING IF I HAD CAUSED DAMAGE TO IT OR TO MY ELECTRICAL CIRCUIT”, I contacted the seller AGAIN, relaying what had occurred during the installation, and that I had eventually found a .pdf manual on the Amazon page, but that I was uncertain if it was the most up to date version as it mentions the “NON-EXISTENT COVERING REMOVAL , but does mentioned to not start the car while the solar panel was installed - so I asked what would be the result from having the car running while installed, would there be any damage to the circuitry - AND RECEIVED NO RESPONSE FROM THEM.STUPIDLY, even knowing better at this point, I left it connected to my new battery to see if would maintain the voltage I measured at the battery, even with IT’S OWN VERY BRIGHT LED ON THE PLUG AND THE DIMMER ONE ON THE BACK OF THE PANEL ADDING TO THE PARASITIC DRAIN ON THE BATTERY......NOPE! My 2 month old, bought it brand new off the self after waiting two weeks for stock to arrive battery was suddenly unable to start the engine.I only wanted this to produce enough of a charge to keep the battery topped off and prevent the batteries lead sulfate from crystallizing, as it sits for long periods of time.I did look into it as much as I could, to try and figure out why this brand had some of the highest ratings among the different solar panels. Instead I discovered that they seemingly want to bypass Amazon’s being aware of any problems, and the customers having Amazons protections, by providing this on a contact page:“If you do not receive our email reply on Amazon for more than 24 hours, some words may be blocked. Because we will reply to Amazon's email within 24 hours, if this problem occurs, please contact us through the email below.Email ①: [email protected] ②: [email protected]”I’m not sure why, legitimately, they would want to block any “WORDS” coming from Amazon and prefer to bypass the copies of communication between seller and customer that Amazon reviews, but I do have a few guesses...

It just didn't work well for me. I had an old 1976 Ford that the battery kept going dead on. This little solar charger just didn't pack enough punch to keep the battery afloat.

I would just like to say this solar panel works very good The one I have does charge past 13.5 volts but it seems to work good and not overcharging my battery and it does work good on cloudy days I'm really happy with this product thank you

It is a small panel and the one I had before was. Wry large. This one works very well and I really like the compact size! Solar tech has come a long ways lol. It has some suction cups so you can stick it inside a car window as well. Also has a cigarette charger adapter so if your car will work with key off the plug will charge it