Find the correct battery for your car key fob

Choose your make, model and year. If your car came with more than one key type, we show which battery each key takes — straight from the manufacturer's owner's manual.

Find My Battery

  • Official manufacturer sources
  • Matched to your key type
  • US and UK vehicles

Find your key fob battery

Same car, different batteries

The right battery can depend on which key you have, not just the car and year:

  • 2023 Toyota Corolla: Electronic key (smart key system) → CR2450; Key with wireless remote (no smart key system) → CR2032
  • 2021 Ford F-150: Flip key (key-start vehicles) → CR2032; Police Responder remote (F-150 Police Responder only) → CR2032; Push-button-start key (Intelligent Access) → CR2450
  • 2021 Toyota Tacoma: Electronic key (smart key system) → CR2032; Wireless remote key (no smart key system) → CR2016
  • 2024 Ford Escape: Push-button-start key (Intelligent Access) → CR2450; Remote flip key (key-start vehicles) → CR2032

Why trust these answers

  • Official sources. Every answer cites the manufacturer's owner's manual or owner portal, with the edition and page or section.
  • Year by year. We don't copy an answer from a neighbouring year or another country.
  • Every key type we can verify. Smart keys, flip keys and remotes are listed separately.
  • Honest gaps. If the manual doesn't name the battery, we say so and don't show one.

134 verified answers across 15 models sold in the US and UK so far. We add a vehicle only when its official manual names the battery. How we verify

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