Sennheiser PXC 350 Instruction Manual page 20

Improper use
"Improper use" means using the headphones other than as described in these
instructions, or under operating conditions which differ from those described herein.
Safety instructions for batteries/rechargeable batteries
If abused or misused, batteries/rechargeable 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 batteries out of reach
and out of sight of
children.
Do not heat or throw into
fire.
Do not short-circuit.
Do not solder.
Do not mutilate or
dismantle.
Do not pack charged
batteries loose – danger of
shorting out – fire hazard.
Do not get flat and fully
charged batteries/
rechargeable batteries
mixed up.
Do not attempt to
recharge non-rechargeable
batteries.
Immediately remove flat batteries/
rechargeable batteries from the
device.
Observe correct polarity.
Switch off battery-powered/
rechargeable battery-powered devices
when not in use.
Remove batteries/rechargeable
batteries when the device is not used
for extended periods of time.
Only charge rechargeable batteries
with the appropriate Sennheiser
chargers.
After extended periods of non-use,
charge rechargeable batteries before
using them.
Only charge rechargeable batteries at
ambient temperatures between 10 °C
and 40 °C.
Dispose of exhausted batteries/
rechargeable batteries at special
collection points or return them to
your specialist dealer.
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