When first installed the battery lasted a long long time…great! I charged it Wed night and reinstalled battery at 0500 Thurs. It is Fri as of this writing 1235 and the battery is at 79%. Two activities since charged. Why did battery life go down so fast in a short amount of time?

Hi @Paulgrimaldi. Do you live in a cold state? Cold weather can be the culprit of a depleting battery, as the weather outside is below the operating conditions for the battery and the Doorbell. You can learn more about it in our Community post here.