The charge from the hardwiring supplies a trickle-charge to the battery. As a result, depending on what functions the doorbell is performing, the battery may drain faster than the hardwiring charge can keep up with. Therefore, there's a need to occasionally recharge your battery.

Does hardwiring Ring doorbell charge battery?

Hardwiring. A Ring Doorbell 2 can also be connected to an existing mechanical or electronic doorbell that operates at a voltage between 8 volts AC and 24 volts AC. ... The wiring from your existing doorbell will charge the battery in the Ring Video Doorbell 2, so with normal use your battery will stay charged.

Why won't my Ring doorbell charge when hardwired?

A hardwired Ring Doorbell battery not charging could be caused by damaged or loose wires, the voltage of the doorbell wires being too low or too high, or cold temperatures outside the home. You can check the wires and voltage yourself or wire a local electrician.