Tesla Batteries: What Kind of Battery Does My Tesla Have?

Tesla EVs have gone through many design iterations over the years, and one of the most-revised parts of Tesla’s design has been the high voltage battery. The early years of the Model S and Model X saw everything from a 40 kWh battery pack to a massive 100 kWh pack, with plenty of packs in between. Tesla continues to refine battery chemistries and form factors across its global Gigafactories, with the Cybertruck and refreshed Model 3 Highland (released late 2023) further mixing up the battery landscape.

2026 Note: Tesla now uses several lithium-ion battery types across its lineup, but most fall into two broad categories: nickel-based batteries, used in most Long Range, Performance, Model S, Model X, and Cybertruck variants, and LFP batteries, used in many Standard Range trims. Nickel-based packs generally provide more range and power but are typically charged to about 80% for daily use. LFP packs can usually be charged to 100% daily, are cheaper, and tend to last well, but usually provide a bit less total range.

That being said, trying to figure out which battery pack a Tesla has installed can be confusing. Whether you have an early Model S or a newer Model Y—or are looking to buy either one on the used market—knowing what kind of battery is in a Tesla can help you understand range, charging behavior, and long-term ownership expectations.

In this article, we’ll walk you through Tesla’s EV battery packs and show you how to check your Tesla for its battery type. Then, we’ll discuss how to get a good idea of a Tesla battery’s size in kWh.

Which Battery Type Is in My Tesla?

What type of battery is in a Tesla? Let’s start with some Tesla battery chemistry trivia:

Just so we’re clear, all Teslas, from the 2006 Roadster to the 2026 Model Y, use lithium-ion battery packs. The difference in battery packs between Teslas lies with the chemistry that goes along with the lithium and in the physical size and number of the cells included in each pack.

Tesla’s first battery packs—the ESS packs made for the Tesla Roadster—were made up of 6,831 18650-type cells—3.7v cells, each cylindrical with a size of 18mm x 65mm. The cells were arranged into 11 sheets of 9 “bricks”, each with 69 cells—11 sheets x 9 bricks x 69 cells = 6,831 total cells.

You can get an amazing inside view of how this works in this Roadster battery disassembly video from Gruber Motors:

These 18650 batteries, manufactured mostly by Panasonic, use varying amounts of Nickel, Cobalt, and Aluminum (NCA). The Model S and Model X also use 18650 cells—sometimes shortened to 1865—in 16 modules that contain varying numbers of cells depending on the year and battery pack size of the car. The chemistry of the Model S and X battery cells varies in cobalt content, but as of 2026, they are still generally nickel-based NCA packs. Here’s a better inside look at the Model S and X battery pack from a teardown posted by Jehu Garcia:

For the Model 3 and Model Y, battery types and chemistries are more varied.

The Model 3 launched with 2170-format NCA battery cells, not the older 18650 cells used in the Model S and Model X. Later versions continued using nickel-based 2170 cells in many Long Range and Performance trims, while Tesla also began using 2170 NCM/NMC batteries in some Chinese and European-built vehicles. Starting in 2021, Tesla began using prismatic Lithium Iron Phosphate (LFP) batteries in Standard Range Model 3 variants, primarily from CATL in China. As of 2026, LFP batteries remain common in base Model 3 units globally, especially those built in China and Europe. US base Model 3 supply can still vary depending on production batch, supplier, and trim.

The Model Y went through a similar battery evolution to the Model 3 with one additional iteration: Tesla’s proprietary 4680 cell. Some early Texas-built Model Ys used 4680 structural packs, but those were limited production runs rather than the long-term norm for most Model Y buyers. As of early 2026, the only Tesla vehicle still strongly associated with 4680 cells in normal production is the Cybertruck. Most Model Ys—including many US builds—continue to use 2170-based packs, while LFP availability depends heavily on region, trim, and production source.

Nickel-based and LFP battery types have different characteristics that can change how your battery charges and how much range your Tesla actually has. For the standard versions of the Model 3 and Model Y, Tesla started installing LFP batteries during the materials shortages of 2021. LFP batteries usually have lower energy density than nickel-based packs, but they can regularly charge up to 100% without the same daily-use concerns that apply to nickel-based packs. The one real downside to the LFP packs is weaker cold-weather charging behavior, though a well-managed preheat routine can help reduce this issue.

Nickel-based battery packs allow for more range and power than the LFP packs, but there are a few drawbacks. NCA and NCM/NMC batteries should generally not be charged to 100% every day if you want to minimize long-term battery degradation. Tesla usually recommends a lower daily charging limit for these vehicles and saving 100% for road trips. Nickel-based packs are also more susceptible to thermal runaway than LFP packs in theory, though battery fire incidents are rare thanks to Tesla’s battery shielding methods and thermal management system. Nickel-based packs also generally fast-charge better in cold temperatures, while LFP can feel sluggish until warmed up.

How to Tell if Your Tesla’s Battery Is Nickel-Cobalt-Aluminum (NCA) or Nickel-Cobalt-Manganese (NCM/NMC)

To determine if your Tesla likely has a nickel-based battery, start with the charging screen. Go to Charging > Set Limit on your Tesla’s touchscreen.

If the charging slider shows options for “Daily” and “Trip,” or your Tesla recommends a daily charge limit around 80%, your vehicle most likely has a nickel-based battery pack. Tesla uses this guidance to discourage owners from charging nickel-based packs to 100% every day.

As of 2026, charging-limit behavior is still a useful clue, but it is not perfect. Tesla has used multiple chemistries across factories, trims, and mid-year revisions, so relying only on model year, trim name, or build location can lead you in the wrong direction.

For Model Ys built in Austin, Berlin, or Shanghai, the vehicle may use NCA or NCM variants depending on trim and supply chain, but almost all US Model Ys delivered in 2025–2026 use 2170 nickel-based packs. Earlier limited 4680-equipped Y programs were discontinued, so Texas-built Model Ys no longer reliably use 4680 packs.

For Model 3 and Model Y vehicles especially, the better approach is to check whether the car explicitly identifies itself as having an LFP battery. If it does not show LFP in the vehicle information screen, and it recommends an 80% daily charge limit, it is most likely using a nickel-based pack.

How to Tell if Your Tesla’s Battery Is Lithium Iron Phosphate (LFP)

To determine if your Tesla has an LFP battery, navigate to Controls > Software > Additional Vehicle Information on your Tesla touchscreen.

If the screen shows “High Voltage Battery type: Lithium Iron Phosphate”, your vehicle is equipped with an LFP battery. This is the best built-in method to confirm battery chemistry, especially for newer Model 3 and Model Y trims where battery type can vary by production location and delivery date.

As of 2026, most base Model 3s and many Model Y Standard Range trims globally ship with LFP batteries, especially those produced in China and Europe. US vehicles can vary, so check the vehicle itself rather than assuming from trim name alone.

What Battery Size is In My Tesla?

Tesla used to use battery sizes in their branding for the Model S and Model X from 2012–2019, but the actual number of kWh in each Tesla pack is something of a mystery. While you can get a good general idea of which pack your Tesla has by looking up the advertised capacity in kWh for your model, year, and trim level, the actual pack on your Tesla won’t exactly match up with those values. In some cases, the available capacity was software-limited. We won’t go into why this is the case, but just know it’s what Tesla chose to do.

More recent Teslas are simply named by model and trim without mention of which pack size they have, so we have to get creative with how we check for a Tesla battery size.

One way we can try to determine pack size is by reading the part sticker on each Tesla battery pack. On some models, the size of the pack is listed right on the sticker.

Let’s take a look at how to find the battery sticker on each Tesla model:

Where to Find the Model S and Model X Battery Sticker

You can typically locate the battery pack sticker for the Model S and Model X on the inside of the wheel well behind the front passenger wheel.

Most Model S and Model X battery pack stickers should look like this:

Hopefully, you can see that the sticker lists this part as a high voltage battery with a number—sometimes printed twice—for capacity in kWh.

Note: occasionally, the sticker will list REM on the pack, which denotes that the pack was remanufactured. Usually, this will only be present on a Tesla that has undergone battery repair or replacement.

How to Find the Model 3 (and Model Y) Battery Sticker

For the Model 3 and Model Y, it’s much harder to get a good look at the battery sticker, but a member of Tesla Motor’s Club posted a neat trick to getting a good picture of it with a smartphone.

Unfortunately, the Model 3 and Model Y battery sticker has less information on it than the Model S and X stickers do. You’ll be able to see the part number, but it will be difficult to learn anything from that information without access to Tesla’s parts catalog.

Early Model 3s may have an additional sticker located under the frunk cover that shows battery size in kWh—see your Tesla manual for removing this cover; it typically provides access to the 12V battery and the air intake. However, later Model 3s and Model Ys generally don’t have an additional sticker under the frunk panel.

As of 2026, this is still the case: battery pack stickers for Model 3 and Model Y continue to provide very limited information, and Tesla does not list battery capacity anywhere obvious in the vehicle UI. Also note: the refreshed “Highland” Model 3 does not include a frunk sticker or battery label that shows capacity. Highland owners generally cannot determine pack size from a simple physical label.

What if You Can’t Find Your Tesla’s Battery Pack Sticker?

While it’s unusual for the battery sticker to fall off, sometimes the sticker has either been removed—Tesla sometimes does this with their Used Inventory if a pack has been refurbished or replaced—or it may not be readable.

Fortunately, there is at least one more way to get info on your Tesla’s battery pack: ask a Tesla Service Center technician. Tesla’s service techs have additional access to your Tesla’s service information, either in their system or through your Tesla’s interface. They should be able to help you with some of your questions about which battery pack has been installed in your Tesla.

Last resort (disclaimer: we do NOT recommend that you try this, but it’s worth knowing about): you can access battery health information, including usable pack capacity, yourself through your Tesla’s service mode. However, please be warned that changing settings in service mode can cause actual problems with your Tesla. It’s better not to go poking around and changing things in service mode if you don’t know exactly what you’re doing.

As of 2026, Tesla still doesn’t provide a public battery specification lookup by VIN—but service centers or third-party apps can sometimes reveal pack capacity and state-of-health data, if you’re comfortable going that route.

Looking to Buy a Tesla With a Specific Battery Type?

Before we go—and before the Tesla battery type FAQ at the end of this post—we like to give a quick shout-out to you if you’re learning about batteries because you’re looking to buy a used Tesla.

Since we designed our used EV listings around used Teslas right from the beginning, we’ve got the early Model S neatly categorized by battery size. If you’re looking for a pre-2019 Model S or Model X with a specific battery in mind, it’s as easy as using our listings battery filter.

For other Tesla models, it’s not quite as easy. You can narrow down your search for specific Tesla battery types based on trim level and check the results against the info we gave you above about which model years had a particular battery style.

Best of luck on your battery pack sleuthing endeavors!

And hey, when it comes time to swap out your Tesla for your next EV, be sure to get a solid quote for your used Tesla from our EV Cash Offer network!

FAQ About Tesla Battery Packs

The following are common questions and answers about Tesla battery packs.

What Type of Batteries Do Teslas Use?

Teslas use lithium-ion (Li-ion) batteries in a variety of sizes and battery chemistries. To date, Tesla’s Li-ion battery types have included Nickel-Cobalt-Aluminum (NCA), Nickel-Cobalt-Manganese (NCM/NMC), and Lithium Iron Phosphate (LFP) chemistries. In 2026, Tesla’s lineup includes NCA, NCM/NMC, LFP, and 4680-format cells depending on vehicle, trim, and factory. LFP is common in many base models. 4680 cells are currently most closely associated with Cybertruck, while Model Y 4680 production has been limited rather than the norm.

What Type of Battery Cells Are in a Tesla?

Over the years, Tesla battery cell formats have included 18650 cells, 2170 cells, LFP prismatic cells, and 4680 cells.

What Is the Tesla Model 3 Battery Type?

The Model 3 launched with NCA battery packs using 2170 cells. In 2021, Tesla began using prismatic LFP batteries in standard Model 3 variants.

As of 2026, most Model 3 Long Range and Performance trims still use nickel-based cells, especially in US builds. Some regions and trims may use different chemistries depending on supply chain, so check the charging screen and Additional Vehicle Information screen to confirm.

What Is the Tesla Model Y Battery Type?

The Model Y battery types have included 2170 nickel-based battery packs, prismatic LFP battery packs in some regions/trims, and Tesla’s 4680 battery pack in limited Texas-built production. As of 2026, 4680-equipped Model Ys are not the norm for most buyers.

What Kind of Battery Does the Cybertruck Have?

The Cybertruck uses Tesla’s in-house 4680 cells. As of 2026, Cybertruck is the Tesla vehicle most clearly associated with 4680 production, though range and pack size differ by trim. No Cybertruck trim currently uses LFP or 2170-style cells.

How Much Does It Cost to Replace A Tesla Battery Pack?

Replacing a Tesla battery pack can cost anywhere from roughly $7,000 to over $19,000, depending on the model, pack size, whether the pack is new or remanufactured, warranty status, labor, and availability. For more detailed replacement costs for a Tesla battery, click here.