Sennheiser MM 450-X Instruction Manual page 4

Important safety instructions
Safety instructions for the Lithium-Polymer battery pack
If abused or misused, the battery pack may leak. In extreme cases, it may
even present an explosion or fire hazard.
• Heat generation
• Fire development
• Explosion
• Smoke or gas development
Please understand that Sennheiser does not accept liability for damage
arising from abuse or misuse.
Keep away from children.
Immediately remove the
battery pack from an obvi-
ously defective product.
Dispose of the battery
pack at special collection
points or return it to your
specialist dealer.
Only charge the battery
pack with the appropriate
Sennheiser chargers.
Only charge the battery
pack at ambient tempera-
tures between 10°C/50°F
and 40°C/104°F.
Do not mutilate or
dismantle.
Store charged battery
packs so that the termi-
nals cannot contact each
other – danger of shorting
out/fire hazard.
When not using the
product for extended
periods of time, remove
the battery pack from
the product.
Only use battery packs rec-
ommended by Sennheiser.
Switch battery pack-
powered products off
after use.
When not using the
battery pack for extended
periods of time, charge it
regularly (about every
3 months).
Do not heat above 70°C/
158°F, e.g. do not expose
to sunlight or throw into
a fire.
Do not continue to use a
defective battery pack.
Do not expose to moisture.
MM 450-X | 3