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Battery Replacement Guide

When to Replace the Battery

Your FITIZENS Athlete App will notify you through the app when the battery is running low. You typically need to replace the battery every few weeks, depending on usage.

Required Battery Type

The FITIZENS sensor uses a CR2025 lithium battery.

Replacement Steps

  1. Detach the Sensor from the Strap.

    • Remove the sensor from the strap to access the battery compartment

  2. Locate the Battery Cover.

    • Turn the sensor over; the battery cover is on the back
    • You will see a notch where you can insert the left side of the chest strap to use as leverage

  3. Open the Battery Cover.

    • You can use your own chest strap.
    • Insert the metal hook at the left side of the chest strap into the notch and use it to pry open the cover

  4. Remove the Battery.

    • Carefully take out the old battery

  5. Insert the New Battery.

    • Place the new CR2025 battery into the compartment, ensuring the positive (+) side is facing the (+) symbol on the lid.

  6. Close the Battery Cover.

    • Replace the cover and press it down until it clicks securely into place

  7. Attach the Sensor to the Strap.

    • Reattach the sensor to the strap, ensuring the FITIZENS logo is oriented correctly: read from left to right, the right side should be pointing towards the shorter side of the strap.

Here's a visual guide on how to replace the battery, watch the video below:

Battery Life Optimization Tips

  • Don't wear the sensor when you finish your workout.
  • Use high-quality batteries from reputable manufacturers.