To ensure moisture meters are kept in the best condition, you should keep the probes or sensor clean and dry.
The batteries on a moisture meter need replacing as soon as the device begins to indicate low power. Readings taken with a low battery moisture meter may not be reliable.
If you are not going to be using the device for an extended period, remove the batteries to prolong their life.
Moisture meters do not need to be stored anywhere in particular, but should be kept in a dry environment. They are sometimes provided with a case or pouch to keep them in.