What Tesla's battery health tools show you
Tesla vehicles display battery health information directly in the car's touchscreen and through the Tesla mobile app. The most useful number is your battery degradation percentage, which tells you how much capacity your battery has lost since it was new. A Tesla battery that shows 90% health means it has lost 10% of its original range.
You can see this information in two places: the car's main display under Controls > Service > Battery, and in the Tesla app under your vehicle's status screen. The app shows your current charge level and estimated range, which together give you a rough picture of how your battery is performing day to day. Neither tool requires any special setup or subscription.
Tesla also logs detailed battery data that the company can access during service appointments. If you take your car to a Tesla Service Center, technicians can pull a full diagnostic report that shows voltage, temperature history, and charge cycle counts. You do not need to request this — it is part of their standard inspection if you ask about battery health.
Key Takeaways
- Your Tesla's battery health percentage appears in the car's touchscreen under Controls > Service > Battery and in the mobile app under vehicle status.
- Battery degradation of 5 to 10% over three to five years is normal and does not mean your battery is failing.
- The estimated range shown in your car changes based on temperature, driving habits, and charge cycles, so a single low reading does not indicate battery damage.
- Tesla Service Centers can pull detailed battery diagnostics during a service visit if you want a professional assessment beyond what the app shows.
Where to find battery health in your Tesla app
Open the Tesla mobile app and tap the car icon at the bottom of the screen. You will see a status card showing your current charge percentage and estimated range in miles or kilometers. This is the quickest way to check your battery's current state without getting in the car.
The app does not show a degradation percentage the way the car's touchscreen does, but the estimated range gives you a baseline. If your car originally had 300 miles of range when new and now shows 270 miles at full charge under the same conditions, that is roughly a 10% loss. Keep in mind that temperature, driving style, and tire pressure all affect this number, so one reading is not reliable on its own.
The app also shows your charging history if you tap into the charging section. This history can help you spot patterns — for example, if your range drops significantly after cold weather, that is normal battery behavior, not degradation. If it drops and does not recover when temperatures warm up, that is worth investigating.
Reading the battery health screen in your car
Sit in the driver's seat with the car in Park. Press the Controls button on the left side of the touchscreen, then navigate to Service > Battery. The screen will show your current charge level, estimated range, and most importantly, your battery degradation percentage.
This percentage is the most direct measure of battery health Tesla provides. A new Tesla battery typically shows 100%. After three years and 50,000 miles of normal driving, you might see 95% to 98%. After five years and 100,000 miles, 90% to 95% is common. These numbers vary based on climate, charging habits, and how often you use Supercharging versus home charging.
The screen also displays your battery's current temperature. If the temperature is unusually high or low, it can temporarily reduce your available range. This is not degradation — it is the battery protecting itself. Once the battery returns to normal temperature, your range will recover.
What normal battery degradation looks like
Tesla batteries are designed to retain at least 80% of their capacity after eight years or 120,000 miles, whichever comes first. This is Tesla's warranty may provide for most models. In practice, most owners see much slower degradation than this minimum.
A typical pattern looks like this: 2 to 3% loss in the first year, then 0.5 to 1% per year after that. So a car with 50,000 miles might show 96% to 97% health, and a car with 150,000 miles might show 90% to 92%. Cold climates tend to see slightly faster degradation, and frequent Supercharging can accelerate it slightly, but the difference is usually small.
If your battery shows 85% health after two years and 30,000 miles, that is faster than normal and worth discussing with Tesla Service. If it shows 92% health after five years and 80,000 miles, that is performing better than average and nothing to worry about.
Why your estimated range changes day to day
The range number you see on your Tesla's display is not a fixed measurement of battery health. It is a calculation based on your current charge level, recent driving patterns, outside temperature, and battery temperature. On a cold day, the same battery at the same charge level will show 10 to 20% less range than on a warm day.
This is why checking your battery health once and assuming it is degrading is misleading. A car that shows 250 miles of range on a 40-degree morning might show 290 miles on a 70-degree afternoon, even though nothing about the battery changed. The battery itself is fine — it is just less efficient in cold.
To get a meaningful comparison, check your estimated range under similar conditions each time. Full charge, same outside temperature, same time of day. If your range drops 20 miles between summer and winter, that is temperature. If it drops 20 miles between two summer days a month apart, that might indicate degradation worth tracking.
When to get a professional battery diagnostic
You do not need a professional diagnostic unless something seems wrong. If your battery degradation percentage is within the normal range for your car's age and mileage, and your estimated range matches what other owners report, your battery is healthy.
Schedule a service appointment if your battery shows more than 15% degradation before 100,000 miles, if your range drops suddenly rather than gradually, or if your car is having trouble holding a charge overnight. Tesla Service can pull detailed logs showing voltage, temperature history, and charge cycles to determine whether the battery itself is failing or whether something else is causing the problem.
If your car is still under the eight-year/120,000-mile battery warranty and the degradation exceeds what Tesla considers normal, the company will repair or replace the battery at no cost. Bring your car in with documentation of the degradation you have observed.
Frequently Asked Questions
Is 10% battery degradation after three years normal?
Yes. Most Tesla owners see 2 to 3% loss in the first year, then 0.5 to 1% per year after that. At three years, 5 to 7% degradation is typical. 10% is on the higher end but not necessarily a sign of a problem — it depends on your climate, how often you Supercharge, and your driving habits.
Does charging to 100% every day damage my Tesla battery?
Charging to 100% daily will degrade your battery slightly faster than charging to 80%, but the difference is small over the life of the car. Tesla's battery management system is designed to handle daily full charges. If you want to maximize battery lifespan, charge to 80% for daily driving and save 100% charges for long trips.
Why does my estimated range drop in winter?
Cold reduces battery efficiency temporarily. A battery at 32 degrees delivers less power than the same battery at 70 degrees, so your car estimates a shorter range. This is not degradation. Your range will return to normal when the battery warms up. Preheating your car while plugged in helps the battery warm faster.
Can I check my battery health without going to a Tesla Service Center?
Yes. The battery degradation percentage in your car's Service menu and the estimated range in your app are the main tools available to owners. For a detailed diagnostic report, you need to visit a Service Center, but the information in your car is usually enough to know whether your battery is healthy.
What should I do if my battery degradation is higher than normal?
First, confirm the degradation is real by checking your battery health under consistent conditions — same charge level, same temperature, same time of day — over a few weeks. If it is consistently high, contact Tesla Service and describe what you have observed. Bring your car in if the degradation exceeds 15% before 100,000 miles or if your range dropped suddenly.