Topsolar Solar Panel Kit 10W 12V Monocrystalline + 10A Solar Charge Controller + Extension Cable with Battery Clips & O-Ring Terminal for RV Marine Boat Off Grid System Review

I bought four of these thinking they could do a good 12v charge on my ATVs and keep booting. Unfortunately, they tend to use up the energy they generate. As a result, it will show less voltage than if it were not installed. Very disappointed. I am an experienced marine electronics technician and have a good understanding of electrical systems. This product just doesn't do what it's supposed to. On the other hand, it's a very well designed product that has everything you need besides the…

After a little use of this kit the charge controller seems to be working as it should but the solar is a bit poor. I use this kit with a small SLA 12V battery for a trail camera. The camera doesn't need much unless it's taking a lot of pictures. Needless to say the battery died after 3 weeks in the woods. After some testing with the solar panel in direct sunlight it outputs 21V which is great and normal but with anything else like the sun behind a cloud or just a panel in the shade the voltage…

I bought this to have a USB backup for our phones and to keep the generator start battery charged. This solar panel generates more than enough electricity to get the job done. The main problem lies with the controller. A battery must be connected in order for you to see the display and for the USB ports to work. You can remove the battery after the display is connected to the network and information will continue to be displayed. But the USB ports will disappear. CURRENTLY! When the sun goes…

Good panel for my purpose Controller was DOA I had another older one to check it wasn't a panel and it works great. I use it to power a DC powered electric fence to keep the battery charged all the time. Now I haven't checked what amps it's coming from but I can tell you the battery has gone up after 8 hours in the sun based on the old controller I'm using just jumped to 3 with 2 of our 4 Lights indicate full charge. In my application I simply used a cheap tool box to place the controller and…

I have a truck that sits between a week and 3 weeks between starts. So, my 3 year old battery is draining a lot. Actually since he was 2 years old. I installed a smaller solar panel in my truck and it was fine, but over the winter months and short days it just couldn't keep the battery charged enough. So I bought what I am reviewing here. It has just been tested. Because I had to go to the hospital. and my car has not started for 3 weeks. In the middle of winter, with short and cloudy days…

Just installed today, the instructions for the controller aren't very good but I found some great videos on YouTube on how to program the controller. I hooked it up to my caravan's deep cycle battery and on a cloudy day I still get 12.9 volts from the south facing solar panel. I wasn't sure what to expect from that $33 but it does the job perfectly and I can always upgrade to a larger solar panel with this controller. I highly recommend this device. I have looked at several tenders for solar…