---
title: "Tesla Battery Showdown: Why Chinese LFP Cells from CATL Outperformed Panasonic and LG Chem in Durability Tests"
description: "An independent study of 10,000 electric vehicles identified the leader in battery longevity for Tesla: Chinese LFP cells from CATL retain 93.3% capacity after 100,000 km, outperforming LG Chem and Panasonic. 🇨🇳🔋 Despite lower energy density, they win in reliability and price. 📉🚗"
date: 2026-07-16T15:33:42.000Z
lang: en
url: https://xab.info/en/posts/tesla-battery-showdown-chinese-lfp-catl-outperforms-panasonic-lg-chem
tags: [tesla, catl, lg-chem, panasonic, ev-batteries]
publisher: "XAB.info"
---

# Tesla Battery Showdown: Why Chinese LFP Cells from CATL Outperformed Panasonic and LG Chem in Durability Tests

![Charging a Tesla electric vehicle using an LFP battery from CATL, showcasing the superiority of Chinese technology over Panasonic and LG Chem](https://xab.info/media/2026/07/16/issledovanie-batarej-tesla-lfp-catl-vyigryvayut-u-lg-i-panasonic/issledovanie-batarej-tesla-lfp-catl-vyigryvayut-u-lg-i-panasonic-1.webp)

In the world of electric vehicles, where every kilometer of range and percentage of retained capacity are critical, Tesla has traditionally stood out for its vertical integration strategy. However, despite the automaker sourcing some traction batteries from third-party partners, it is the quality of these components that determines long-term ownership costs. A recent large-scale study conducted by the Swedish company Carla has shed light on which specific batteries demonstrate the best charge retention in real-world operating conditions.

### Study Scale and Sample

The results, published by Electrek, are based on data from the Swedish used electric vehicle dealer Carla. The company's specialization in the secondary market requires thorough battery diagnostics during the initial inspection, allowing them to build a unique database. The sample included nearly 10,000 electric vehicles tested in Sweden between 2022 and 2026. This volume of data allows for statistically significant conclusions regarding the durability of various battery chemical compositions.

### Internal Tesla Ranking: The Victory of Chinese Chemistry

Comparative analysis showed that within the Tesla lineup, the clear leader is the Model 3 equipped with lithium-iron-phosphate (LFP) batteries produced by the Chinese company CATL. After a mileage of 100,000 kilometers, these batteries retain an average of 93.3% of their initial capacity. This is the best result among all tested Tesla vehicles.

In second place were vehicles with NMC-type traction batteries produced by the South Korean giant LG Chem. At the same mileage, they demonstrate a residual capacity of 91.5%. Rounding out the top three is the joint venture between Tesla and Panasonic, supplying NCA-type batteries. Their residual capacity at 100,000 kilometers ranges from 88.2% to 89.8%, depending on the battery's rated capacity.

### Technical Compromises: Why LFP Wins

The advantage of lithium-iron-phosphate batteries (LFP) is explained by their higher operational lifespan. However, this technology is not without drawbacks. LFP batteries have lower energy density, making them heavier than NMC and NCA counterparts with comparable capacity. In the latter, nickel and cobalt are paired with manganese or aluminum, providing better energy efficiency per unit of weight.

Nevertheless, LFP has significant advantages: they are less prone to fire and handle full charging to 100% better, which is convenient for daily use. At the same time, NMC-type batteries lose charge more slowly at negative temperatures, which is critical for northern latitudes. Price remains a crucial factor as well: LFP batteries are the cheapest among those installed in mass-market electric vehicles.

### Global Context and Long-Term Prospects

If we look at the ranking across all electric vehicle brands included in the Carla sample, the picture changes. The leaders in residual capacity become models from South Korean brands Hyundai and Kia, as well as Volvo/Polestar and BMW i3 electric vehicles. In this overall tally, the Tesla Model 3 with a CATL battery takes only eighth place. Nevertheless, all models that made it into the top 20 showed a residual capacity of over 90% after 100,000 km of mileage.

Additional data from Geotab's study shows that during a year of active use, modern electric vehicles lose approximately 1.8% of their traction battery capacity. Formally, this allows batteries to be used for more than 20 years. Tesla itself states that their batteries lose no more than 15% of their capacity after 320,000 km, with the most active degradation occurring at the very beginning of the battery's life cycle.