B19 - Lithium 12V Battery for Tesla Model 3 (2017–2022.3)
B19 - Lithium 12V Battery for Tesla Model 3 (2017–2022.3)

B19 - Lithium 12V Battery for Tesla Model 3 (2017–2022.3)

$479.00

Stop replacing your 12V battery every few years. The Electrified Series Lithium 12V battery is a true drop-in upgrade with no maintenance. Engineered specifically for EVs, the Electrified Series Lithium battery replaces existing OEM lead-acid units with a battery that is cleaner, lighter, smarter, and built to last dramatically longer.

Built for modern EV systems, it offers higher usable capacity, greater efficiency, durability, and performance than traditional sealed lead-acid batteries. This translates to more reliable accessory power, better voltage stability for electronics, significantly longer lifespan and fewer battery replacements over the life of your vehicle.

Your Tesla deserves better than the outdated lead-acid battery it came with.

Key Features

Self-Heating Technology — Heating elements warm the battery cells during charging in extreme cold, so your car starts reliably even in harsh winters.

Bluetooth-Enabled BMS — Actively manages cell balancing and protects against overvoltage, undervoltage, overcharge, temperature extremes, and short circuits.

Ohmmu Energy App — Monitor state of charge, run diagnostics, and track lifecycle data from your phone (iOS & Android).

Higher Nominal Voltage — Delivers cleaner power for brighter LEDs and better audio performance compared to lead acid without sag.

Eco-Friendly — Longer service life means fewer batteries consumed over time and less material waste.

Battery Specs

Dimensions

  • Length — 195mm / 7.7in
  • Width — 122mm / 4.8in
  • Heighth — 205+20mm posts / 8.1+.80in

Battery Terminals — SAE, Positive Top Back Left

Weight — 9 lbs

What's In The Box

12V Battery

Warranty Card

Warranty

4 Year Warranty — 100% Full Replacement Coverage on performance failure of any sort. Requires inspection and is determined solely by Ohmmu Energy. See the full warranty details HERE.

Magnuson-Moss Warranty Act — Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) more details HERE.

Vehicle Compatibility

Replaces OEM Batteries — B24LS, 85B24LS, 1129182-00-A, 1129182-00-B

Group Size B19 (BCI) battery compatible with the Tesla Model 3 Years 2017–2022.3 (March 2022)

April 2022 and later models are NOT compatible (i.e. 15.5V low voltage battery system)

Install Guide

Model 3 12V Battery Installation

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Pairs well with

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US based support.