Replacing the earphones’ rechargeable batteries
CAUTION! Danger of damage to the devices!
Rechargeable button cells from other manufacturers may cause damage to the earphones and will invalidate the warranty.
Only use original Sennheiser rechargeable button cells (see page 22).
Slightly lift the end of the caps and slide the caps out of the guide rails.
Insert the new rechargeable batteries as shown. Observe correct polarity when inserting the batteries.
Replace the caps and slide them onto the guide rails until it clicks audibly.
Charge the earphones until the corresponding LEDs go off (see page 8).
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