All good, the regulators are reliable and effective, the best for their money, I have been using them for years, highly recommended purchase

It works flawlessly for 3 months in a place with a lot of heat and cold in the winter, for the price of 15 euros perfect, it continues to work without any problems today 25/5/23.
21-4-2024 it still works flawlessly under the same conditions

When the battery was fully charged and theoretically stopped drawing power from the panel, it started overheating....it broke with 8 amps...if I had given it 20, it said it could handle

The worst tool that ever passed through my hands. I bought 2 for a friend, the first one melted in 30 minutes. I used the second one with an aluminum heat sink at the back, it lasted but it got very hot. I threw it away and bought another old model with bulbs, and it works great. The system works with a 12-volt panel and a good battery. The charger is useless, whoever buys it will regret it. I gave it one star because there was no option for zero

Make sure to use a multimeter to check the output of the regulator before connecting it to a battery. The voltage should not exceed 14.5V, otherwise it can damage the battery and cause a short circuit. After checking the voltage, connect the battery and then the photovoltaic panel, allowing the regulator to recognize the battery

I have connected it to a 24v panel (open circuit 36.9, 60 cells 235w) but on a 12v battery. It is not mppt and I decided to try it on something like this since it is also cheap. It adjusts the charging where it should be, constantly at 14.4. I give it a 4 because I don't know its durability over time. I have had it for about two months and so far everything is fine.

Easy to set up and connect with panels and batteries.
It worked immediately with a stable 24v output when connected to two car batteries in series.
If it lasts at least a year, I will give it 5 stars.
It is already value for money!