ACOPOWER Mono Solar Panel——100W,175W,200W

These work amazing to download power from the sun would recommend you put two on your car get about 130w per panel

Bought this for an electronic gate arm and was much cheaper than the brand name one from the gate manufacturer. So far it is still working after being installed outside for nearly two months of many hard rains and winds. I preemptively siliconed all around the face of the panel to help make it more water resistant. If it lasts even a year it will be worth the money spent on it.

Longer version: First; the diode all the other reviewers are debating. No it doesn't have one and that's a good thing. While you certainly can, you really shouldn't be just connecting this to a battery. You should be using a purpose-selected charge controller of a minimal quality that it will almost certainly have it's own. If you're wondering, why not have both; The reason is that each diode drops your voltage by .6 volts. It doesn't sound like a lot but if you're using this in an area that doesn't get a lot of sun, it can make a difference.In my use, I had a seldom used car whose battery died a lot. I combined this with a DIY MPPT controller, purchased here on Amazon for about $13. Also, since the cigarette lighter port on my car only connected when the car was on, I connected to the battery via an “Add a circuit” fuse tap, also purchased here on Amazon for about $7. At first, it didn't work because I had placed it on my dashboard in a way that slanted slightly away from the sun. Once I tiled it as directly at the sun as I could, it worked perfectly.

Added this to recharge the battery on my solar furnace.

So far so good on my might mule gate opener.