(I'm very new to electronics/electricity.)
I'm currently using a complex ACS712 / Arduino / Raspberry Pi to activate a relay when battery is above 13.8V volts. (See 12V - How to activate an electric item if battery is full)
Is it possible to use a battery charge controller to the same effect without problems?
Like this one:
Instead of the charger, I wanted to put the load and the electricity should go the other way? (Or is it more complex than that? - diodes or something?)