@felmue said in Atom Lite with Earth sensor powered by Tailbat: If, however, you are open to different hardware you can find boards which are designed specifically for low power consumption. I chose Atom Lite with Tail Bat because of: Out of box solution e.g. board with battery including case. It is small and it looks nice. Cheap / good price. Bunch of sensors which can be easily connected. I don't know about any other HW which fits these categories. I'm using also other products for home automation which can be on battery for 2 years at least but it is x3 more expensive so I'm kind of surprised with the result :(