Silvercrest STK 16 B3 Assembly, Operating And Safety Instructions page 62

Only use the same type of batteries / rechargeable batteries. Do
not mix used and new batteries / rechargeable batteries.
Remove the batteries / rechargeable batteries if the product will
not be used for a longer period.
Risk of damage of the product
Only use the specified type of battery / rechargeable battery!
Insert batteries / rechargeable batteries according to polarity
marks (+) and (-) on the battery / rechargeable battery and the
product.
Clean the contacts on the battery / rechargeable battery and in
the battery compartment before inserting!
Remove exhausted batteries / rechargeable batteries from the
product immediately.
Notes for coin / button cell batteries
WARNING! Do not ingest the battery, chemical burn hazard.
This product contains a coin / button cell battery. If a coin / button
cell battery is swallowed, it can cause severe internal burns in just
2 hours and can lead to death.
If you think batteries might have been swallowed or placed inside
any part of the body, seek immediate medical attention.
62 GB/MT
Keep new and used batteries away from children. If
the battery compartment does not close securely, stop
using the product and keep it away from children.