Short video on replacing the rtc battery of a Taranis X9D Plus or any other OpenTX based radio. It's not a critical thing to replace, but if you want your time and date displayed correctly or logged ...

Your AirTag battery life should last for around one year, depending on your usage. It can be replaced with another CR2032 ...

Changing a car battery can be done in just a few steps. Always test the car battery before replacing and be sure to properly dispose of the dead battery.