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Important safety information
3 | D 10 series
S
afety instructions for Lithium-Polymer rechargeable batteries
In extreme cases, abuse or misuse of
rechargeable batteries can lead to:
WARNING
•explosion,
•
fire development,
• heat generation or
•smoke/gas development.
Only charge
rechargeable
batteries at ambient
temperatures between
10°C/50°F and
40°C/104°F.
Do not heat above
70°C/158°F, e.g. do not
expose to sunlight or
throw into a fire.
Dispose of defective
products with built-in
rechargeable batteries
at special collection
points or return them to
your specialist dealer.
When not using rechargeable
batteries for extended periods
of time, charge them regularly
(about every 3 months).
Only use rechargeable
batteries recommended
by Sennheiser and the
appropriate chargers.
Switch battery pack-powered
products off after use.