SUNER POWER 12V Solar Car Battery Charger & Maintainer - Portable 14W Solar Panel Trickle Charging Kit for Automotive, Motorcycle, Boat, Marine, RV, Trailer, Powersports, Snowmobile, etc.

I have been using this for a few weeks now, and I monitor the voltage rather closely. Yesterday, in the middle of a perfectly clear, sunny day, the charger was charging at 15.5 volts - definitely too high for a 12V AGM battery. (The absolute max should be 15.4, and it really should be about 14.6 - 14.8.) This is the first time I've noticed this happening, and I've had similar sunny days before, so I don't know what happened yesterday, but I disconnected the charger, because I don't want to ruin my battery. I will re-connect it today and watch it closely.

I had this product since March 2021, at first it was great! I used this to maintain my battery in my jetski over the winter moths( south florida winter). Anyway about a month ago, I turned on my ski to run it and it didn't start, after some digging I found a 5 amp fuse blown ( didn't know why at the time) I replaced the fuse and it keeps blowing, did some research and found many jetski owns have this 5 amp fuse problem after jumping the battery with a booster or a vehicle, as it causes a surge in power and blows a diode that prevents current from back feeding. Well that moduel where the diode sits is 300 dollars, luckily for me in a electrical guy and after about 2 hrs of fishing into the module I replaced the diode and now the ski works. This got me thinking, I checked the voltage output of my solar panel and found 20 volts, which explains why my diode went bad, it caused a over charge and damaged my diode. It's sad that almost everything's is made in China, no product are no longer good long term. I used the charge so i don't have to buy a battery every year after sitting for 6 months, if I was a non technical person this could of cost hundreds of dollars to take to a shop ansd repair this issue. I hate to talk bad about products but this almost cost me 300 bucks for a module that isn't relatively accessible.

It actually worked.

I bought a used car with an upgraded stereo, flashing LED lights and a VIPER alarm system installed. Turns out all of these things drained the battery terribly. The LED lights were easy enough to remove, but the alarm was a different story. Because I put like 1000 miles on my car PER YEAR. When I wanted to drive, my battery was always dead. I kept a portable charger to give myself a jump, because I already knew it wasn't going to start. Anyway, I attached this solar panel to my battery and threw in the space behind my back seats and it's been smooth sailing ever since. The only down side is that I can't park, for an extended period of time, in a garage. Harness the sunlight!

Suner Power is the company to go to. Best prices, quality products and great technical support. The 14 watt charger maintainer does a great job maintaining 12 volt batteries of several sizes. Small and lite enough to us camping or at home in your drive way. We highly recommend their products for every one. Great prices, quality and tech services to answer questions. We just purchased a BC 30 watt to keep our parallel wired dual batteries on our diesels charges from them and are impressed with it and the accessories that come with it. Our nights are below zero now and days are also cold. Need to take care of your batteries contact them for the best set up to satisfy your needs. This company was rated in the top ten and their products marked as the best buy. Made us happy. We live in a rural town and our order came in record time.

This is my second Suner charger. The first one was for the battery on our second car, which can sometimes sit for weeks without being started. It worked perfectly, so when we bought a new travel-trailer I wanted another one for that battery. We used to let the battery on our last trailer just go dead then charge it when going camping. That was a dumb mistake because when you do that you ruin your battery requiring frequent replacements and that got very expensive. These chargers keep your battery in top shape, saving big $. One suggestion for the folks at Suner: Offer an SAE to 2-PIN adapter for these chargers. Many rv's now come with a 2-pin Furrion type solar power recepticle built in to the side of the rv. I found one from another dealer and bought it. I would probably have bought it from you if it was offered.

Park my Shelby in garage with no electric in winter in Minnesota. Must also purchase the sec solar controller or you will overcharge battery. I built a wooden stand and put on a flat roof kept battery at 13.6 volts for 5 months works great.

i did not like that my radio turns on when i plugged it in to trickle charge. I can't shut off my radio when it is plugged in. I want it to trickle charge without using any power.