Brand new Ring doorbell...Battery dead in less than 3 weeks

This is a copy of the email I just sent to Ring: I just installed my brand new Ring doorbell within the last 2-3 weeks. I wired it with the 2nwires that fed my old manual chime doorbell. The weather here in Southeast Michigan has been extremely balmy during that time. We have had very few hours of below 30 degree temperatures. I just received an email from Ring saying that the Ring battery was near or completely dead. The doorbell now only rings outside...not on my phone or in my house. I had fully charged the battery prior to installation per instructions. Even if it was not wired....the battery should last much much more than 3 weeks!!!! But it is wired!!! I am recharging said battery as I compose this message. Do I have a defective battery or unit? Jim O