Rechargeable lithium battery for Familock S3&S3 Max

Works Great

Works great! I keep coming back to eufy. Very happy with the products.

Fast deliver and good price

Good to have. Makes charging up a smooth transition.

I found the delivery on the front porch of my old house which we are selling. It was sent to the wrong address. It’s now a spare battery

charged the battery on low energy source . took almostv2cdays, but very timely. original battery exhausted it's charge and the replacement slipped right on. works great.

Very good

Received in excellent condition. Works as described andtwo batteries should be included with the purchase of an eufy smart lock.

love their products and this is no exception to quality and technology

Good battery last about two weeks with the family of four using it. I just wish a chart faster, but that’s why I got to jar one wire work with the other one.