Safety instructions for Lithium-Ion rechargeable batteries
If abused or misused, rechargeable batteries may leak. In extreme cases, they may even present a
• | heat hazard | • | explosion hazard |
• | fire hazard | • | smoke and gas hazard |
Please understand that Sennheiser does not accept liability for damage arising from abuse or misuse.
Keep away from children.
Do not heat above 
70°C/158°F, e.g. do 
not expose to sunlight or throw into a fire.
Do not expose to moisture.
Do not
Do not mutilate or 
dismantle.
Do not get fully charged but unpacked rechargeable batteries mixed up. Do not continue to use defective rechargeable batteries.
Only use original Sennheiser rechargeable batteries.
Observe correct polarity.
Switch rechargeable battery-
powered devices off after use.
Remove rechargeable
batteries when the unit is not
used for extended periods of time.
Only charge rechargeable batteries with the
appropriate Sennheiser chargers.
When not using rechargeable batteries for extended periods of time, charge them regularly (about every three months).
Only charge rechargeable
batteries at ambient
temperatures between 10°C and 40°C.
Immediately remove rechargeable batteries from obviously defective devices.
Dispose of rechargeable batteries at special collection points or return them to your specialist dealer.
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