Hello, I would like to report a problem. This was observed with Blue Smart Charger IP65 12V/15A and 12V/7A chargers.
When the Absorption stage reaches towards the end with the current dropping to 0.3A, the charger starts cycling the relay on/off. Sometimes it enables then disables the relay in less then one second. This goes on for hours. It looks like its stuck in a loop. Relays have a limited life cycles.
I am able to stop the death loop by changing the charge voltage down by 0.20v for a minute then raise it back 0.30v, this stops the issue. Eventually it goes to Float mode. Using the latest Firmware v3.25 Bootloader v3.15.
Here is a VRM graph that shows the problem outlined in red box. Then you can see I lower the voltage from 14.7v to 14.5v then a minute later raised it to 14.8v this stops the relay cycling.
Please add a delay/hysteresis or change cut off points to the charge algorithm.
Thank you.
