Get a second rechargeable battery pack for your Video Doorbell 2 or Spotlight Cam Battery, and you'll always have backup power.  Always Have Backup Battery PowerGet a second Battery Pack for your Ring Video Doorbell 2, Spotlight Cam Battery or Spotlight Cam Solar, and you’ll never worry about running out of power. With typical usage, the Battery Pack will keep your device charged for up to six months. To charge your device, simply press the tab to release the Battery Pack and connect it to a micro-USB cable.Keeps your device charged for up to six monthsSwaps in and out of your device with a quick-release tabWorks with Ring Video Doorbell 2, Spotlight Cam Battery and Spotlight Cam Solar