Nikon Coolpix W150 Quick Start Manual page 26

When batteries are no longer needed, insulate the terminals with tape.
Overheating, rupture, or fire may result should metal objects come into contact
with the terminals.
If battery liquid comes into contact with a person's skin or clothing,
immediately rinse the affected area with plenty of clean water. Failure to
observe this precaution could result in skin irritation.
26
For your safety