This item is a pre-order item with an expected shipping date of May 2025. Orders containing a pre-order items WILL NOT SHIP until the final pre-order item is able to be shipped. Dates and product details are subject to change as new arrival date is updated.
 
Battery Terminals: Threaded Insert (UNF 10-32), Positive Top Back Left
Dimensions: 7.375" x 3" x 6.125" (L x W x H) -- Per Battery
Weight: 6 lbs -- Per Battery
What's Included: 1x or 2x 12V LFP Batteries*, Tie-down Spacer(s), Warranty Card
 
*ATTENTION:  Rivian changed the 12V system with new builds released approx. 3/23 and later, to utilize a single 12V battery instead of dual 12V batteries on previous builds. On newer builds, the passenger-side unit is a capacitor (NOT a 12V battery), and now only requires a single 12V battery installed on the driver-side. 
 
Prior to ordering, we recommend you inspect the left (passenger-side) 12V unit of your vehicle to confirm which version you have.
 
If the left unit's passenger-side terminal is black (negative), then it is an earlier build with dual 12V batteries. If it instead has a red (positive) connection there, then it is a newer build with a single 12V battery (capacitor on the left, 12V battery on the right / driver's side).
 
Upgrade your Rivian R1S or R1T 12V battery or batteries with our Lithium Iron Phosphate (LiFePO4) batteries from Ohmmu!
 
Ohmmu 12V LiFePO4 batteries are lighter, more efficient, eco-friendly, have a higher usable capacity, and last 4x longer than traditional sealed lead acid (SLA) batteries.
 
•  4 Years Full-Replacement Limited Warranty
•  Replacement to OEM Battery
•  Lithium Iron Phosphate Battery Chemistry (aka LiFePO4 or LFP)
•  Self-heating technology inside warms battery during charging in extreme cold conditions as an extra layer of protection.
•  Proprietary 12V Lithium cell and BMS technology that is a drop-in replacement to your existing battery (no firmware changes needed)
•  Compatible with the Ohmmu App, a monitoring and diagnostic tool
•  Battery Management System (BMS), Bluetooth-enabled - manages cell balancing for a long service life and protects your battery from high/low voltage, overcharge, high/low temperatures, and short circuits.
 
Ohmmu Bluetooth App
Get valuable diagnostic and lifecycle information, State of Charge (SOC), and more from these Bluetooth-enabled batteries with the Ohmmu App. 
 
The Ohmmu App is available for download from the App Store for iOS and Google Play for Android devices.
 
12V Battery Install Video (Single and Dual 12V Battery Rivian Models):
https://www.ohmmu.com/rivian-r1s-and-r1t-video
 
Why Go Ohmmu?
1. Increased Durability
2. Longer-Lasting Reliability
3. Decreased Weight
4. Higher Capacity
5. Better 12V Performance - Improved LED & Audio (higher nominal voltage, no voltage sag)
6. Less Environmental Waste (fewer batteries being used and less material in each battery)
7. Increased Efficiency (Ohmmu 12V charges and discharges at a higher efficiency than SLA)