Replacing The Headset's Rechargeable Battery - Sennheiser 504302 Instruction Manual

Cleaning and maintaining the headset system
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Replacing the headset's rechargeable battery

You can replace the rechargeable battery. Spare rechargeable batteries are
available from your Sennheiser partner. Only use spare rechargeable
batteries recommended by Sennheiser Communications.
CAUTION Damage to the product due to improper handling
The cable connections can be damaged when subjected to
mechanical stress.
Open the battery compartment cover
the connector plug of the rechargeable battery.
Remove the earhook or the headband.
Open the battery compartment cover
diagram).
Carefully move the battery compartment cover
the arrow until you overcome a slight resistance.
Remove the rechargeable battery and carefully loosen the connector
plug of the battery cable.
Insert the connector plug of the new rechargeable battery into the
connection socket. Observe correct orientation of the connector plug.
Replace the battery compartment cover
Carefully lift the headset housing with your finger nail while fixing the
battery compartment cover
The battery compartment cover
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Charge the new rechargeable battery (see "Charging the headset
rechargeable battery" on page 22).
carefully loosen
using your finger nail (see first
in the direction of
onto the headset.
with your thumb.
locks into place (see last diagram).
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