You can check your battery level at any time in the mobile app. 

A push notification will be sent to you phone when your battery drops to 20% as a reminder to change your battery.

Battery Notification Triggers

  • Low battery - battery must be less than or equal to 20% AND less than a day remaining NOTE: if it’s 20% but more than a day it would not be sent, for example it would send at like 5% in that case of a really good battery
  • Battery is Off - when device gets lower than negative 5% server sends the battery off notification
  • Server push notification job runs every 60 minutes to send out low and battery off notifications for devices that meet this criteria.

Note:  The Whistle's battery indicator will only update when it has a chance to make contact with the our server. If your Whistle is in an area of low cell reception coverage, there may be a delay in a battery update. It's also worth noting that the battery level is merely an estimate as it only updates when the device checks in with our servers.