I want to use opto isolators between the load and charge outputs of my 123BMS using the two wire assistant for my Multiplus 3000.
I already see that the two Multiplus contact have 5v on them.
Can you tell me what is the cuurent to be switched through these contacts?
Then I can size an opto-isolator or use it to switch a transistor if more power is needed.
Or perhaps the current is so low that an opto isolator can be used directly - I have PC817 to use which can switch up to 50ma.