Sennheiser PXC 250-II Instruction Manual page 4

Safety instructions for standard batteries
If abused or misused, batteries may leak and, in extreme
cases, may even present an explosion and fire hazard.
Sennheiser does not accept any liability for damage
arising from abuse or misuse.
Keep away from children.
Do not short-circuit.
Do not heat above 70°C/158°F, e.g. do not
expose to sunlight or throw into a fire.
Do not mutilate or dismantle.
Do not continue to use defective batteries.
Immediately remove batteries from obviously
defective products.
Remove batteries from the product when it is
not used for extended periods of time.
Do not expose to moisture.
Do not charge non-rechargeable batteries.
Important safety information
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