20A 12V 24V Auto IP68 Waterproof PWM Solar Charge Controller Solar Panel Battery Intelligent Regulator for Solar System Caravan Boat(24 Hours Working Mode)

Works perfectly and is built to last. I am very happy with this solar charge controller.

Great product. I use this product to keep the re charging the batteries of my solar electric gate operating.

How many times have you had a riding mower or four wheeler battery go dead from non-use? Using these to keep a riding lawnmower and four wheeler charged over the off-season. Had a spare 50W solar panel and put it to use with this. Split the output of the solar panel to two of these. This is the second year now and the batteries have not failed.

The controller is designed for Exterior applications. When it arrived, I was impressed with the weather sealing and small size. Easy to install and the status lights are easily seen

Two in use through summer and winter so far. Ones running solar charging a battery on a livestock fencer other it setup as a solar charger/maintainer on ag equipment. No problems yet. One was in a container out of rain. Other is out in the elements charging payloader batteries.

Can't tell you about its water resistance capabilities because I'm using it inside a small enclosure I built for my two generators; one is a regular 10,000 watts generator and the other is 4,500 watts inverter generator. Both are electric start capable, so they both require battery power. The issue with the batteries is that they can lose power quickly or get damage by just sitting around, or if they are not allowed to return to a full charge state after being used. I'm using this HUINE 20A 12V 24V Auto IP68 Waterproof PWM Solar Charge Controller to keep both of the generator's batteries fully charged and ready just in case an emergency. The charge controller is connected to a 160W 12V solar panel and, so far, it has kept both batteries fully charged, without any evident of an overcharged condition. The LED lights provide indication of the battery power, solar panel power and/or an attached load. One thing that users must be aware of is that this charge controller does not have a provision to shut the power off to the load side. So, if you're not planning to attach a load to the controller, you should either tape the wires or use wire caps before connecting batteries. Anyway, based on my results and low price of this charge controller, I recommend it. It has worked flawlessly up to this point.

Charge controller works alright if there is constant sun, on dark overcast days the battery can drain from the bright indicator lights, they should be dimmer and smaller.

If you have a single solar panel sitting around you can hook this straight up to the panel and to the 12 volt battery and it will keep it charged. I used a 265 watt panel to keep a 12 volt lipo charged, much better than just letting the old solar panel lean against the fence. works great!