How to charge your COROS watch – COROS Help Center

Begin charging

Please locate the charging cable for your COROS watch.
Plug the charging cable into a USB power adapter or a computer.
Connect the charging cable with your COROS watch.
- COROS PACE 2/PACE 3/PACE Pro/APEX/APEX Pro/APEX 2/APEX 2 Pro/VERTIX/VERTIX 2/VERTIX 2S
  - Make sure the cable is fully inserted into the back of your COROS watch.
  - The cable is not magnetic and will not snap in automatically.
- COROS PACE
  - Please clip the cable onto the side of your COROS watch. Make sure the metal pins from the watch and the cable are in contact.
- COROS PACE Pro
  - PACE Pro comes with a COROS charging adapter that works with any standard USB-C cable.
  - Plug in the adapter to PACE Pro until it snaps into place. The adapter will lie flush against the back of the watch.
  - Next, plug in a standard USB-C cable to the other end of the charging adapter. Once your USB-C cable is connected to power, your PACE Pro will begin charging.
When charging begins, the watch will power on automatically. Watch face will display the current battery percentage.
When the charge is full, your COROS watch will display a green circle and a 100% battery status.

Charging during workouts

COROS watches support charging during workouts. Feel free to charge your COROS watch in the middle of the workout recording. Charging will not interfere, stop, or restart your ongoing workouts.

Check current battery percentage

Follow the steps below to check the current battery percentage for your COROS watch.

On your watch, look for this icon on the main watch face. The number followed is the battery percentage. If you can’t locate this icon, press the BACK/LAP button to toggle the data on the main watch face.
On the COROS app, tap the watch image on the Device page after added your COROS watch. Look for this icon under the watch ID. The number followed is the battery percentage.

Save power when the battery is low

You can extend the remaining battery life on your COROS watch by following the steps below. Please always charge the watch before the battery reaches 0% to prevent permanent damages to the battery.

Disable the Gesture Backlight feature.
- Main watch face → System > More Settings → Gesture Backlight → OFF.
Disable vibrations.
- Main watch face → System > More Settings → Vibration > Key | Alert Vibration → OFF.
Disable tones.
- Main watch face → System > More Settings → Tones > Key | Msg. & Call | Alarm | Activity Alert Tones → OFF.
Turn on UltraMax GPS mode for outdoor running workouts.
- Main watch face → Run | Trail Run | Mtn Climb (available on COROS APEX Pro/APEX 2/ APEX 2 Pro/VERTIX/VERTIX 2/VERTIX 2S) | Hike → On the Start page press and hold BACK/LAP button → UltraMax → ON → Press BACK/LAP to return to the Start page.
Disable phone notifications.
- On the COROS app → Device page → Notifications → Disable all notifications → ON.
Enable Night Mode for night training (not available on PACE).
- Main watch face → Toolbox/Quick Menu → Night Mode.

Troubleshoot

If the watch doesn’t power on and is dead even with charging, please follow the steps below to restart the watch:

Charge the watch for over 2 hours even if the screen doesn’t turn on.
Remove the charging cable from the watch (this step is very important).
Press and hold the Power button for over 15 seconds or until the COROS logo shows up.
- Power button location
  - COROS PACE - lower left button (CONFIRM button)
  - COROS PACE 2 - lower right button (BACK button)
  - COROS PACE 3 - lower right button (BACK button)
  - COROS PACE Pro - lower right button (BACK button)
  - COROS APEX - top button (Digital Dial)
  - COROS APEX Pro - top button (LIGHT button)
  - COROS APEX 2 - top button (LIGHT button)
  - COROS APEX 2 Pro - top button (LIGHT button)
  - COROS VERTIX / VERTIX 2 - middle button (Digital Dial)
- Please don’t press both buttons on your COROS watch at the same time. Otherwise, the COROS watch will enter Inactive mode and will not respond to normal operation or charging. Please power off the watch if you plan to stop using it - main watch face → System → More Settings → Turn Off.

If the watch can’t maintain a stable charging status, please check if the power outlet voltage is too high/low. Switch over to a computer or a standard USB power adapter and try again.
Please check if the metal pins are clear of debris. Disconnect the cable from power and rinse the watch and the cable. Let them air dry and try again.

Additional Considerations

If using a third-party wall charger, please ensure that the device is UL certified, and clearly shows the UL marking on the unit. This will indicate that the wall charger is in compliance with, and has been approved by Underwriters Laboratories in terms of their standard safety checklist.

In addition, we only recommend the usage of charging devices / sources that provide a consistent 5 watt (5V with a current of 1A) output to recharge your COROS products. Anything greater than this output (i.e., a fast charger) could potentially strain the battery, and cause premature degradation of the unit. Chargers that provide a lower voltage will result in slower battery recharge times.

What's more, we do not recommend consistently draining the device's battery down below 10%, as well as consistently charging your device to 100% on a daily basis. The battery will operate most efficiently between these ranges, and draining the battery down too low or charging it to 100% too often could place unnecessary strain on the internal components of the device.