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12V Questions

MPFuini

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Rivian R1T R1S 12V Questions 20250409_134707

I got the 100Ah solid state lithium battery and DC-DC charger installed and working great so far. I got a deal from Renogy and they gave me a shunt and battery monitor which is pretty convenient as to see the state of the battery without the app. I'll report back if I run into any issues down the road 🤞
Rivian R1T R1S 12V Questions Screenshot_20250409_140403_DC Hom
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Nixapatfan

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I got the 100Ah solid state lithium battery and DC-DC charger installed and working great so far. I got a deal from Renogy and they gave me a shunt and battery monitor which is pretty convenient as to see the state of the battery without the app. I'll report back if I run into any issues down the road 🤞
Screenshot_20250409_140403_DC Home.webp
How are you charging the battery? Wired directly to 12v or some other way?
 

MPFuini

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How are you charging the battery? Wired directly to 12v or some other way?
Yes, the DC-DC converter (pictured upper left) charges the lithium battery using the Rivian's existing 12V lead battery as the power source.
 

Automate_Ted_2

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OP, how is the aux battery setup working several months later?

I picked a Gen2 R1T a few weeks ago and I am already planning on subwoofer upgrade for mine: Current thought is a single JL 13TW5v2 driven by a VX600/1i. The 13.5" sub looks like it will fit perfectly in the space.

Even at 600W RMS I think I might need to go a similar route and add an additional battery. Thanks for this detailed thread, it is really helping my plan for my upgrades.
 

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MPFuini

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OP, how is the aux battery setup working several months later?

I picked a Gen2 R1T a few weeks ago and I am already planning on subwoofer upgrade for mine: Current thought is a single JL 13TW5v2 driven by a VX600/1i. The 13.5" sub looks like it will fit perfectly in the space.

Even at 600W RMS I think I might need to go a similar route and add an additional battery. Thanks for this detailed thread, it is really helping my plan for my upgrades.
Its been working great and since my last post I added a 115W flexible solar panel to the hood to help supplement the extra battery so I'm not drawing as much from the Rivian 12V system.

Rivian R1T R1S 12V Questions 20250519_165319


As for the 13.5 sub, thats what I had in my Tacoma and what I was trying to fit in the Rivian, but for the configuration I went with, I could only fit two JL 12TW3s. I wanted to keep the factory platic trim under the seat, but if you got rid of that lip, you might be able to fit a 13.5. Either way, I'm very happy with the sound!

Good luck and let me know if you have any questions about your build. Happy to help if I can!
 
 








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