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Safety instructions
Intended use of the devices
Intended use includes:
• having read this instruction manual, especially the chapter “Safety
instructions” on page 2,
• using the devices within the operating conditions and limitations
described in this instruction manual.
“Improper use” means using the devices other than as described in this
instructions, or under operating conditions which differ from those
described herein.
Safety instructions for the Lithium-Ion rechargeable battery
The BA 300 is a Lithium-Ion rechargeable battery. If abused or misused,
this rechargeable battery may be damaged. Please understand that
Sennheiser does not accept liability for damage arising from abuse or
misuse.
WARNING! In extreme cases, the rechargeable battery may even
present a
•heat hazard
•fire hazard
• explosion hazard
•smoke and gas hazard
Do not heat above
70°C/158°F, e.g. do
not expose to sunlight
or throw into a fire.
Only charge rechargeable
batteries with the appro-
priate Sennheiser chargers.
Do not expose
to moisture.
When not using the
rechargeable battery for
extended periods of time,
charge it regularly (every
six months for about one
hour).
Do not short-circuit. Only charge rechargeable
batteries at ambient
temperatures between
10°C and 40°C.
Do not mutilate
or dismantle.
Do not charge the
rechargeable battery
if the device is
obviously defective.
!
Store the devices/
rechargeable batteries
in a cool and dry place
at room temperature.
Return defective devices
or devices with defective
rechargeable batteries to
your specialist dealer.