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Replacing the MOB Tag Battery

WARNING

See the Important Safety and Product Information guide in the product box for product warnings and other important information.

NOTICE
The MOB tag uses a CR2032 3V coin-cell battery. You must install a new CR2032 3V coin-cell battery as a replacement. Using any other type of battery is not supported, and may result in a non-functioning system.
  1. Using a #1 Phillips screwdriver, loosen the four captive screws to remove the back cover.

    MOB tag gasket
  2. Gently lift the white tab to release the battery from the back cover.
  3. Place the new battery in the back cover, with the positive (+) side down.
  4. Make sure the rubber gasket in the front cover of the MOB tag is not broken and is fully seated in its groove.

    The gasket fits in the groove in a specific orientation.

    NOTICE

    If the gasket is not properly and fully seated in the groove, it does not create a seal, which leads to the failure of the MOB tag when it is exposed to water. Contact Garmin® product support for information on purchasing a replacement gasket.

After you replace the battery, you may need to pair the MOB tag again (Pairing an MOB Tag).

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October 2025
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