Inverter Remote Control

[Centex]

Originally Posted by lostskier

.... One other thing to consider when your changing controllers, is to add a solar disconnect switch. I did that and installed under the bench seats next to all the other electrical hardware.

When referring to "a solar disconnect switch", IMO it's always appropriate to explain exactly where that switch is located in the circuit (i.e. between the PV array and the controller or / and between the controller and the battery).

Noting that Victron stipulates

• The MPPT controller should always be connected to the battery before the controller is connected to the PV array.
• and likewise
• The PV array should always be disconnected from the MPPT controller before the controller is disconnected from the battery.

IMO it's very useful to have a switch on both sides of the controller (PV input and battery output) to facilitate the proper sequence for service and troubleshooting without the need to cover panels or wait for nightfall.

Pursuant to that, the switch (or breaker serving as a switch) between the PV array and the controller should be rated for the total array Voc (DC volts) and Isc (amps); the switch (or breaker serving as a switch) between the controller and the battery should be rated for the maximum DC charging volts (~14.6 for lithium) and the maximum charging amps (per the controller's rated max output). Take care to confirm DC volt ratings for switching / breaker devices, not AC volt ratings (which are often higher).

Just FYI BlueSea offers a range of switching breakers, both surface and panel mounting, that make this easy. PKYS is an excellent cost competitive vendor for BlueSea breakers IME.

Just for your consideration, Have Fun!

[JohnK]

I already installed a more than adequate switch between the PV and the controller as part of my LiFePo installation. This switch is readily accessible outside of the equipment bay to prevent having to open the bench seat. Got the rotary switch idea from Splitting Lanes. My reasons for the switch were proper connection sequence as well as manual charge limiting. Normal operations for us is to maintain 57% - 85% SOC with an occasional 100% top off for cell balancing.

John

[PaSo]

We did this exact thing two years ago. Works fine. We went with a Victron charge controller and didn’t want to remove the existing controller and deal with a big hole in the bench seat. And it will still give you battery voltage readouts if you don’t have a battery monitor.