Two excerpts from the Installation Manual for the Victron MPPT
SmartSolar charge controllers:
3.5 Remote on-off
The left terminal is connected to the internal 3,3V supply, with a resistor in series for short circuit protection.
The right terminal (marked as + or marked as H) will switch the controller on if >3V is applied, and will switch the controller off if <2V is applied or if the terminal is left free floating.
The recommended use of the remote on-off is:
a. A switch wired between the left and right terminal
b. A switch wired between battery plus and the right terminal.
c. A switch between the right terminal and the charge disconnect terminal of a VE.Bus BMS
5. Specifications, 150V models
Self consumption: Less than 35mA @ 12V / 20mA @ 48V
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Questions ....- Has anyone here rigged a switch per 3.5 a. or b. above to serve as an "on-off" switch for their SmartSolar controller?
- If yes, when the controller is turned "off" using that switch, does the controller continue to draw the small "self consumption" current or does the controller draw NO (zero) current from the battery?
I'm trying to understand if this simple low-current "remote on-off" switching capability serves to
totally eliminate solar controller loads and inputs to the battery, or if a high-current switch/breaker on the controller output to the battery is still required to effectively
totally remove the controller's output and load from the battery (as one might desire for long-term trailer storage without any solar exposure)?
Thanks In advance