Pentax PLP-601 Instruction Manual page 34

[Handling the battery]
If the instrument is not to be used for a long time, be sure to remove
the batteries from the instrument and the detector and store them.
NOTE:
• Be sure not to use chemicals such as benzine, thinner or gasoline.
• Be careful not to scratch the glass surface.
• Leaving the batteries in the instrument for extended period may cause
power consumption even if it is not in use.
• If used battery is left in the battery holder, the instrument of the
detector may be damaged by the battery fluid leakage.
34
leakage