---
title: "2024-2025 Tesla Model 3 Battery Size and CCA"
description: "The 2024-2025 Tesla Model 3 uses a BCI group 16V Li-ion low-voltage battery (Tesla proprietary, 15.5 V / 6.9 Ah) battery. Fitment, replacement notes, and what to check before you buy."
url: "https://whichcarparts.com/cars/tesla/model-3/2024-2025/battery"
updated: "2026-08-20"
---

# 2024-2025 Tesla Model 3 Battery Size (BCI Group and CCA)

The 2024-2025 Tesla Model 3 uses a BCI group 16V Li-ion low-voltage battery (Tesla proprietary, 15.5 V / 6.9 Ah) battery. Fitment, replacement notes, and what to check before you buy.

**Quick answer**: The 2024-2025 Tesla Model 3 uses a Group 16V Li-ion low-voltage battery (Tesla proprietary, 15.5 V / 6.9 Ah) battery.

## 2024-2025 Tesla Model 3 battery specifications (High confidence)

| Spec | Value |
| --- | --- |
| BCI group size | 16V Li-ion low-voltage battery (Tesla proprietary, 15.5 V / 6.9 Ah) |
| AGM required | No |
| Location | Front compartment, behind the cabin-intake trim panel |

Note: All Highland cars use the 16V Li-ion low-voltage battery (CATL prismatic cells), no lead-acid option, no BCI group size, and Tesla says it is designed to last the life of the vehicle. Not a routine wear item; replacement is by Tesla (mobile) service. The high-voltage traction pack is separate.

## Which Tesla Model 3 model years does this cover?

These battery specifications apply to every Tesla Model 3 built from 2024 through 2025, the 2nd generation ('Highland' refresh), compact ev sedan (refreshed body, chassis, and interior). Nothing in this specification changes between those model years.

- [2024 Model 3](https://whichcarparts.com/cars/tesla/model-3/2024)
- [2025 Model 3](https://whichcarparts.com/cars/tesla/model-3/2025)

## What changed during the 2024-2025 Tesla Model 3

| Years | What changed |
| --- | --- |
| 2024 | Highland launch (US orders Jan 2024): new fascias, ride-tuned suspension, quieter cabin with acoustic glass, stalk-less interior (turn signals on wheel buttons), ventilated front seats, rear touchscreen. RWD and Long Range AWD at launch; Performance ('Ludicrous') arrived April 2024 with 510 hp and staggered 20-in wheels |
| 2025 | Long Range RWD (363 mi) joins the lineup; front bumper camera and other running changes appear on later builds |

## 2024-2025 Tesla Model 3 battery: common questions

### What size battery does a 2024-2025 Tesla Model 3 take?

BCI group 16V Li-ion low-voltage battery (Tesla proprietary, 15.5 V / 6.9 Ah). Group size is a physical dimension and terminal-position standard, so a battery from a different group may not clamp down or may put the terminals on the wrong side.

### Where is the battery on a 2024-2025 Tesla Model 3?

Front compartment, behind the cabin-intake trim panel.

### Does a 2024-2025 Tesla Model 3 need the battery registered after replacement?

All Highland cars use the 16V Li-ion low-voltage battery (CATL prismatic cells), no lead-acid option, no BCI group size, and Tesla says it is designed to last the life of the vehicle. Not a routine wear item; replacement is by Tesla (mobile) service. The high-voltage traction pack is separate.

## Sources

- [Tesla Support, Vehicle Maintenance (Model 3 intervals: cabin filter 2 yr, brake fluid 4 yr, rotation 6,250 mi, no desiccant for heat-pump cars)](https://www.tesla.com/support/vehicle-maintenance)
- [Wheel-Size.com, 2024 Tesla Model 3 OE fitments and 42 psi pressures](https://www.wheel-size.com/size/tesla/model-3/2024/)
- [Mavis, 2025 Model 3 Performance staggered OE sizes (235/35R20 front, 275/30R20 rear)](https://www.mavis.com/vehicle/tesla/model-3/2025/performance/)
- [NHTSA Part 573 report, recall 25V-002 (vehicle computer / rearview camera)](https://static.nhtsa.gov/odi/rcl/2025/RCLRPT-25V002-6930.PDF)
- [NHTSA Part 573 report, recall 24V-376 (seat belt reminder)](https://static.nhtsa.gov/odi/rcl/2024/RCLRPT-24V376-3527.PDF)
- [NHTSA Part 573 report, recall 24V-935 (TPMS warning light)](https://static.nhtsa.gov/odi/rcl/2024/RCLRPT-24V935-1846.PDF)
- [Tesla Shop. Model 3 wiper blade (fits all Model 3 years)](https://shop.tesla.com/product/model-3-wiper-blade)
- [Tesla DIY Guide, Replacing Cabin Filters (procedure shared with pre-Highland cars)](https://service.tesla.com/docs/Public/diy/model3/en_us/GUID-DB0A1E3C-926E-498C-A2FD-A27B8421A471.html)
- [Wikipedia, Tesla Model 3 (Highland launch timing, curb weights, EPA ranges)](https://en.wikipedia.org/wiki/Tesla_Model_3)

## Other Tesla Model 3 generations

- [2017-2023 Tesla Model 3 battery](https://whichcarparts.com/cars/tesla/model-3/2017-2023/battery)

Or [compare all generations](https://whichcarparts.com/cars/tesla/model-3/battery).

## More for the 2024-2025 Tesla Model 3

- [Oil & filter](https://whichcarparts.com/cars/tesla/model-3/2024-2025/oil)
- [Tires & wheels](https://whichcarparts.com/cars/tesla/model-3/2024-2025/tires)
- [Wiper blades](https://whichcarparts.com/cars/tesla/model-3/2024-2025/wipers)
- [Air & cabin filters](https://whichcarparts.com/cars/tesla/model-3/2024-2025/filters)
- [Bulbs](https://whichcarparts.com/cars/tesla/model-3/2024-2025/bulbs)
- [Brakes](https://whichcarparts.com/cars/tesla/model-3/2024-2025/brakes)
- [Fluids](https://whichcarparts.com/cars/tesla/model-3/2024-2025/fluids)
- [Service schedule](https://whichcarparts.com/cars/tesla/model-3/2024-2025/service-schedule)
- [Problems & reliability](https://whichcarparts.com/cars/tesla/model-3/2024-2025/common-problems)
- [Key fob battery](https://whichcarparts.com/cars/tesla/model-3/2024-2025/key-fob-battery)
- [Specs](https://whichcarparts.com/cars/tesla/model-3/2024-2025/specs)

Specifications vary with engine option, production date, and market.