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Tesla · SUV · 2020–present

Tesla Model Y battery

The Model Y follows the Model 3 approach to low-voltage batteries; many recent cars use a lithium-ion unit.

Which Model Y do you have?

Pick the model year to see its generation. It narrows things down — it doesn’t settle the exact battery on its own.

Ask about my Model Y

Choose a year to see which generation it belongs to and what that means for the battery.

Battery compatibility by generation

“Confirmed at inspection” = varies by engine, trim or market, or not yet verified

Model Y

2020–present
TechnologyLi-ion low-voltage or AGMVaries by engine/equipment
VoltageLow-voltage system — varies by build
Case / group sizeConfirmed at inspection
Capacity (Ah)Confirmed at inspection
CCAConfirmed at inspection
DimensionsConfirmed at inspection
Terminal layoutConfirmed at inspection
Battery locationConfirmed at inspection
Start-stopUncommon
RegistrationDepends on build
  • — Low-voltage battery type depends on build date.

We don’t publish battery specifications we haven’t verified. Different engines and equipment can require different batteries, so the exact match is confirmed against your vehicle and the battery currently fitted.

Important battery considerations

  • Service capability confirmed before booking.
  • Procedures depend on model and production period. Lithium-ion low-voltage batteries are generally manufacturer-serviced parts.

Symptoms & diagnostics

Slow or laboured cranking
Most noticeable after the car has stood overnight or for several days.
Electrical warnings or resets
Dashboard messages, infotainment restarts or comfort features switching off.
Needing repeated jump starts
A sign the battery can no longer hold or deliver enough charge — or of a drain or charging fault.

These symptoms can also come from charging faults, parasitic drain, cables or the starter. A battery and charging test tells them apart.

Replacing the battery on a Tesla Model Y

  1. 01

    Confirm the battery

    Generation, engine and the fitted battery label are checked against the replacement.

  2. 02

    Protect settings

    A memory saver is connected where practical.

  3. 03

    Access the battery

    Covers and heat shields are removed and kept for refitting.

  4. 04

    Swap and secure

    Negative first off, last on. Terminals cleaned, hold-down tightened, vent tube refitted where present.

  5. 05

    Reset convenience functions

    Window auto-up or similar functions are re-initialised if needed.

  6. 06

    Check charging

    Starting and charging voltages are verified before we leave.

Battery options for the Model Y

Technologies recorded for this model’s generations. The right one for your car depends on its exact specification.

Lithium-ion 12V / 16V auxiliary

Li-ion low-voltage

Only the manufacturer-specified part should be used. Lead-acid batteries are not a substitute unless the manufacturer documents it for that vehicle.

About Li-ion low-voltage →

Absorbent Glass Mat

AGM

A vehicle designed for AGM should be fitted with AGM. A flooded or EFB battery in its place is likely to wear out quickly and may trigger charging-system faults.

About AGM →

Lithium-ion low-voltage batteries are manufacturer-specific parts. We confirm before booking whether we can service yours.

Tesla Model Y battery FAQs

Which battery does my Tesla Model Y need?

It depends on the generation, engine and equipment. Use the year selector above to narrow down the generation, then send us your vehicle details and a photo of the current battery label — we confirm the exact match before fitting.

My Model Y says "12V battery needs service". What now?

Contact us with the build date. If it is a lithium-ion unit, Tesla service is usually required.

Battery assistance for your Tesla Model Y.

Send the year and a photo of the current battery. We confirm the match for your Model Y and fit it where you park.

Daily, including late evenings. Out-of-hours requests are answered as technician availability allows.

Where to?

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