Techno Line WT 768 Instruction Manual page 22

Do not recharge and do not dispose of batteries in fire as the batteries
may explode.
Ensure batteries are stored away from metal objects as contact may
cause a short circuit.
Avoid exposing batteries to extreme temperature or humidity or direct
sunlight.
Keep all batteries out of reach from children. They are a choking
hazard.
Use the product only for its intended purpose!
Consideration of duty according to the battery law
Old batteries do not belong to domestic waste because
they could cause damages of health and environment.
EN10