To extend the service life of the product, the Momentum 5 have a rechargeable battery that can be replaced. The compatible Sennheiser battery is BA 500.
⚠ ATTENTION
Replacing the battery with a non-compatible battery can disable safety safeguards.
The use of non-compatible rechargeable third-party batteries can lead to reduced operating time or damage to the product.
- Only use rechargeable spare batteries supplied or recommended by Sonova Consumer Hearing. We recommend using original Sennheiser batteries.
- When using batteries from third-party providers, ensure that they comply with all technical specifications and applicable local regulations.
Charging blocks that support both 5V and 9V+ output should not be used, as overvoltage chargers may damage the product.
Removing the rechargeable battery
Tools required:
• Phillips screwdriver PH0 (not included)
1. Remove the ear pad from the left ear cup to protect it from
damage (see page 37 of the instruction manual).
2. Remove the four Phillips head screws from the left ear cup with
the screwdriver.
3. Attention! Risk of damage to the speaker cable. Do not pull the
acoustic unit off too far and move it carefully.
Open the left ear cup by pulling the acoustic unit upwards.
4. Disconnect the battery cable plug from the main circuit board.
5. Remove the rechargeable battery from the battery holder.
Inserting the new rechargeable battery
-
Place the rechargeable battery into the holder:
-
Ensure that the battery is correctly aligned. The printed arrows
must point upwards, towards the headband. - Carefully snap the battery into the edges of the holder.
-
Ensure that the battery is correctly aligned. The printed arrows
- Connect the battery cable plug to the main circuit board.
- Close the ear cup by putting on the acoustic unit. Attach the acoustic unit by tightening the four Phillips head screws.
- Reattach the ear pad back onto the ear cup (see page 37 of the instruction manual).