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BanjTheRanj · 04-14-2025, 02:37 PM

Howdy folks, I picked up two ECO-WORTHY 1920Wh 12V 150Ah LiFePO4 and a Victron Orion tr 12/12/30 dc to dc, non isolated controller. I'm wondering if anyone else has installed Lipo's with the victron and been able to maintain functionality of the battery boost/aux boost switch, and if so, how did they accomplish wiring that setup? Any help would be greatly appreciated, in the interim I'll be scouring the forum for any leads.

Thanks -

eyecando · 04-15-2025, 05:42 PM

Quote:

Originally Posted by BanjTheRanj

Howdy folks, I picked up two ECO-WORTHY 1920Wh 12V 150Ah LiFePO4 and a Victron Orion tr 12/12/30 dc to dc, non isolated controller. I'm wondering if anyone else has installed Lipo's with the victron and been able to maintain functionality of the battery boost/aux boost switch, and if so, how did they accomplish wiring that setup? Any help would be greatly appreciated, in the interim I'll be scouring the forum for any leads.
Thanks -

Yes, I have installed a Victron DC to DC unit to charge my coach LiFePO4 battery. If your boost unit does not contain a contact that is normally closed with the engine running, just connect the input to the side of the boost unit that connects to the chassis battery. Connect the output of the Victron to the other side of the boost unit that connects to the coach battery. Otherwise you will need to disable the boost unit by lifting the small wire that enables it.

If your boost unit is a solid state Mastervolt unit like my 2020 Navion, just connect as indicated above. No need to disable the Mastervolt unit since the
input and output are not directly connected.

BanjTheRanj · 04-15-2025, 09:25 PM

That's what I was thinking would work, I'll take a look in the morning to see what's what. Did you run power directly off the alternator or off a bus bar under the passenger seat? (assuming you installed the victron under the seat)

eyecando · 04-16-2025, 04:35 PM

Quote:

Originally Posted by BanjTheRanj

That's what I was thinking would work, I'll take a look in the morning to see what's what. Did you run power directly off the alternator or off a bus bar under the passenger seat? (assuming you installed the victron under the seat)

No, no need to connect directly to the alternator. One wire to each side of the boost unit and one wire to ground is all you need. I used #10 wire. #8 would be even better.

Everything you need is under the passenger seat so that's the best place to put it. I mounted my unit on a piece of aluminum roughly 4 inches x 10 inches and installed it using the two holes in the front panel under the seat.

BanjTheRanj · 04-16-2025, 06:56 PM

that would be excellent if possible, and tracks with what the advanced AI had also suggested. I've uploaded some pictures of the under seat, from what you can see does this track with what you're suggesting and have installed on yours? also did you put an inline 60A fuze on the alternator side of the connection? I believe Victron suggested #6 wires so that's what I grabbed. As I'm looking at my setup it seems like it would make the most sense to grab power from input side of the Tyco switch (image two, and the house battery side of the solenoid?

eyecando · 04-18-2025, 01:30 AM

If you want to charge your coach battery, you need to connect the input side of the Victron to the chassis positive terminal. The output side would be connected to the coach positive terminal. These are the large leads that are connected to the solenoid in your 3rd picture and run from the solenoid to each battery.

The Tyco switch is connected to the coach battery so if you get on the correct side, it could be used for the output.

Don't try to connect to the alternator directly. You want to use the positive leads going to each battery.

Wire size depends on which Victron unit you purchased. I installed the 30 amp unit, so #10 was adequate and I had it available. #8 would have been better.

I fused both the input and output initially with 40 amp fuses but had trouble with the fuse holders burning up so I removed both fuses. The Victron has internal fuses. I protected the wiring with the plastic conduit like you see in your 1st picture. You can purchase it at Lowes or Home Depot.

You need to make sure the solenoid is not energized or the Victron will not produce an output with the input and output shorted. You may need to disconnect the yellow wire on the solenoid. Place a voltmeter between the yellow wire to ground to verify that 12 volts is not present in normal operation. I would also place your voltmeter across the solenoid terminals to verify there is a voltage difference to indicate the solenoid is not picked up or shorted. If it is picked up, I would expect to see less than 0.1 volts across it.

Don't forget to change the settings on your converter and solar controler.