Tesla Model S Lithium 12V Battery (Ultra Lightweight, 4X Life)

$419 $499

It's time to upgrade your Tesla Model S 12V battery with a replacement, ultra-lightweight, and performance 12V lithium battery!

Weighing in at only 9.0 lbs versus Model S's super-heavy 29 lb lead-acid 12V battery, Ohmmu's 12V lithium battery is the battery that Tesla should have shipped from the factory!

4 years full-replacement warrantyProprietary 12V Lithium cell and BMS technology that is a drop-in replacement to your existing battery (no firmware changes needed)
Battery Management System prevents damage to the battery in extreme situations and also balances the battery cells to maintain the pack for longer service life!


  • Weight: 9.0 lbs
  • Increased reliability, up to 4X lifecycle
  • Increased power (no voltage sag, better 12v performance)
  • Less material waste (less batteries being used and less material in each battery)
  • Increased efficiency (Ohmmu 12v charges and discharges at a higher efficiency than Lead Acid/OEM)

Also available for Model 3, Model Y and Model X

Installation Videos

All Model S 2015+ and Dual Motor Model S 2014+ Vehicles

Dual Motor Tesla Model S: 60D, 70D, 75D, 85D, 90D, P85D, P90D and P100D

All 2012-2015 Tesla Model S (Single Motor)  

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At Teslarati, we want to make every interaction with us as effortless as possible, and that goes for our return policy.

Return Policy

  • All products must be in new condition and returned in the original packaging.
  • Returns must not have been installed, damaged, or used in any way.
  • All products must be returned within 14 days of the date on the original invoice.
  • Buyer is responsible for all return shipping costs.

All returned items will be thoroughly inspected prior to issuing a refund. All returns are subject to a 20% restocking fee. 

Teslarati cannot accept freight costs of any returned merchandise.

Customer Reviews

Based on 2 reviews
Robert Janssen
Battery largely as advertised

One piece missing from the instructions was there is a screw that the battery is mounted on in the 2013 S. Because the battery is a bit smaller, the tech said the screw didn't mount quite the same. Additionally the carrying clip needed to be removed to attach the fuses to the battery. Docked a star for the missing steps.

The battery is much lighter as advertised.

The only other issue that's come up is the car seems slower to "wake up". I used to be able to hop in and immediately put it in reverse and drive away as it would boot up when the door handles extended. Now the computer in the driver side dash doesn't seem to boot until I am sitting in the driver seat for 20 seconds or so. This may be related to the new computer that was installed recently not the battery, so I haven't docked a second star.

Gary Gendel
Nice option for the stock battery

Installation went almost seamlessly. The only problem was the battery was slightly smaller than the stock battery so the strap didn't hold it tightly. I used the silicon carrying strap as filler and am happy with the results. Once installed I had no more "Low voltage" issues with the car.

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