As some background, ordered it and the end of November and it lasted about 10 weeks on the initial usb charge plus mains charger / hardwired. Down to 3% by last Sunday and plugged back in Monday morning at 100% and still hardwired, is it faulty if the battery is already down to 50% ?

Hi @Qwakuk. There are a few things to consider with expectations for the battery life of your Ring doorbell. First, your [Motion Settings](https://support.ring.com/hc/en-us/articles/360022462472-Utilizing-Motion-Detection-with-your-Ring-Battery-Devices) and [Motion Frequency](https://community.ring.com/t/how-to-set-your-motion-frequency/4237) will determine how often your doorbell activates. If you are expecting more that 18 activations per day, you can experience battery drain quicker than average. The RSSI of your device also plays a factor with battery. A poor [RSSI](https://community.ring.com/t/how-it-works-your-ring-device-rssi-good-vs-poor/229) will cause your device to work harder to transmit information, causing excessive battery drain. Lastly, you'll want to make sure that your doorbell [transformer](https://ring.com/collections/accessories/products/hardwired-transformer) is at least 16VAC 30 VA. If it's not, it might not be sufficiently providing a trickle charge to your device. I would consider these things when determining the cause of your battery drain. If you made changes to your doorbell but are still experiencing [excessive battery drain](https://support.ring.com/hc/en-us/articles/208190773-The-Battery-In-My-Ring-Device-Seems-to-Drain-Too-Fast), reach out to our support team for the next best steps.