What brand of 12 volt solar panels and 12 volt batteries do you have the best luck with? I feel like I am changing batteries more often then every 2 years and panels maybe every 3 after they get cloudy. Replaced 1 today that is less than a year old but I believe my solar panel maybe bad even though it shows 13 volts. I do not mind spending more on batteries or solar panels if they last longer. What brand of both do you run?.
HLo, I private messaged you.
For the group, the only batteries I use:
Universal Power Group (UPG)
I would bet the Power Patrol batteries are pretty good since they are sold by Interstate Battery.
Keep in mind also that how that solar panel gets mounted has a huge impact on how much power it puts out. Mounting it flush against the feeder can reduce the output power by almost 50% (see Lambert's cosine law) depending on the time of year. This idea seems to be catching on for some reason by some feeder manufacturers and I think what is driving it is cost since they don't want to spend the money on a proper 45 degree mount. Bad idea in my opinion since it leaves the end user with less power margin.
It also needs a clear view of the southern sky. It won't charge well if it is blocked by trees most of the day. I'm not saying you are doing that, but just pointing that out for others who might read this post.