I have had my station for nine months now. So far, it has not been necessary to change the batteries. Presumably the batteries last quite a long time, as they are only intended as a bridging device. As far as I know, the main power supply comes from the solar cells. For this reason, I was surprised that it had to be batteries and not rechargeable batteries. We'll see when the time comes, as there is an indicator on the base station.

I have been using this station for about 2 years and have never had to change the batteries.

I had my station for 1.5 years, then it stopped sending data to the tablet. Replaced the batteries but it is dead.