Does the Multiplus trickle charge function operate when there is no AC connection to shore/generator power? Hopefully it will still top off the vehicle battery while off grid.
Thanks for any info/experience you have had.
asked
Multiplus Aux trickle charge function
i verified that the aux trickle charge feature does function with the inverter is both on and off.
I wired in an on/off switch. My battery monitor says it's pulling 10watts when the switch is on.
Correct. Trickle charge works whether the Multiplus is set to the inverter, off, or only charger. Make sure you have a common ground between house and starter batteries. The common ground s required for the trickle charge to function.
Everything I’ve read suggests that it only works when AC is connected. However in my experience the starter battery voltage has increased even when the AC is not connected and the leisure batteries have been charging with solar.
Just found the same issue.
I'm strugling to understand where was the problem, then I found out where the power was coming from: the Multiplus.
It should be information to be included in the manual, in order to inform users, in my opinion.
Now that I know where this current is coming from I am quieter and I also believe that it is a good function to use a small part of the energy to keep the engine battery charged.
Just to confirm. Are you guys saying that IF there is no AC1 input AND the Trickle Charger is connected to the Start Battery AND the Multiplus is in any state ( On | Off | Charger only ) Then - The Trickle charge pulls power from the House Battery to trickle charge the Start Battery?????
Following up on this.
Is the trickle charge active when the Multiplus is in any state (Off, On, Charge Only, and Invert Only) or is the trickle charge active it active only when the Charger feature is enabled (Charge Only or On)
You have a bit more control over things in NodeRed
Value types
1 - Charger Only
2 - Inverter Only
3 - On
4 - Off
Could you run the trickle charge wire to the built in relay on the Multi and control the relay/charge via NodeRed? Connect the trickle to the Common and the rest of the route on NO. Then setup a rule for when the battery's are at a certain SOC or when the Solar chargers are floating.
You could control it through a relay on the gx device using node red, but there is no control of the relay in the multi outside of the virtual switch or assistants.
I'm trying to understand. Run the trickle charge to the multiplus relay and then to the starter battery? Or run a wire from the multiplus relay. When the MP relay is closed from whatever parameters, it sends its signal to a relay/switch that closes the circuit from aux charge to starter battery?
Thanks. The discussion has been a great help.
Run the wire from the mp aux battery output terminal to the gx relay, then from the gx relay to the aux battery. Create a flow in node red to control the relay based on your desired parameters.
Here is my Red Node flow that will turn on the relay connected to the trickle charge port. It basically closes the relay when the engine is OFF and either the Solar or the Multiplus is in a Float state. The other nodes are for the dashboard. The link out nodes go to an experimental flow.
If anyone wants the flow in code let me know. It works perfectly.
