[Wizza]

I've heard similar stories horny. Another big RED FLAG story that I heard, was regarding the lack of safety features on some of these Chinese solar controllers. Apparently the test to check for, is to remove the battery while the system is under good solar energy, and the output should turn off. Apparently there are some controllers that do not, and in fact they float the full solar voltage to the output and can destroy the electronics. This was a scenario my friend had to investigate, and this is what they found. Seems that a battery collapsed and failed, in a remote location, and as it did so the output voltage continued to climb until destruction of the load. Apparently there was an awful lot of money that they watched fail, remotely via the telemetry data and alarms. So this is a test I will be checking. Another is to check the output voltage with a scope, and look for the presence of AC. Again apparently, some of these Chinese controllers are very 'choppy' on the output. Just a couple of more comments that I have picked up and thought worth passing along.

Cheers for now..

Mark R