Additional Battery for AVD2001B Arlo Essential Video Doorbell Wire-Free. What's in the box: - Rechargeable Battery - Battery Charging Cable Note: To avoid the risk of water intrusion inside your wire-free Arlo Essential Video Doorbell, don’t leave the doorbell outdoors without a battery inserted. 1 Charge the new battery to 100%. 2 Remove the existing battery from your doorbell and replace it with the new battery Arlo Privacy Pledge At Arlo, we’re as passionate about protecting your privacy as we are about safeguarding your home and family. We do not sell your data and are committed to supporting industry standards for data protection designed to keep your personal information private and in your control.