Use your mobile device to monitor your Garmin device charging. The mobile device will display the current device charging state and sound an alarm when the device reaches the set threshold. Garmin connect mobile (https://play.google.com/store/apps/details?id=com.garmin.android.apps.connectmobile) is required, as is a Garmin device with the Charge Monitor app installed (https://apps.garmin.com/en-US/apps/4b1c1025-f1b5-4419-b2c9-fe0eeb676e85).
This Android app is NOT required to use the Charge Monitor Garmin App on your Garmin device.