Uploaded May 2019 | Updated September 2026, 5 days ago

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I replaced the battery of my Sennheiser Momentum 2 0 Wireless Bluetooth headphone battery and then noticed a massive lack of tutorials on the subject, so I made my own.

The battery removed contained the following information:

Front side:
+AHB62254 0N1
5A26132-0239
2.3wh
Backside:
AHB622 54 OPCT-02
3.7v 600mAh
11CP 7/25/40 SYNERGY

the 7/25/40 seem to be dimensions as the battery is 7mm thick 24mm wide and 38mm long.

The replacement seems to be https://s.click.aliexpress.com/e/_AUQDy6 at least the description and measurements are the exact same.