600mAh AHB622540N01 Battery Replacement Compatible with Sennheiser HD 4.40, HD 4.50, Urbanite XL, Momentum 2.0 Wireless Bluetooth Headphones

Purchased to bring a pair of Sennheiser 4.50BT bluetooth headphones back to life. Installation was a snap, and after 2 months the battery seems to last over 16 hours when continuously connected to a bluetooth device, longer of course if powered down when not in use.

This battery 🔋 worked perfectly. Actually it worked better than the original battery!

Seems to be a good replacement for the Momentum 2.0. Hopefully it lasts! Between this and the Soulwit ear pads my old Momentum's I bought for nearly $500 back in 2016 are as good as new.

Not difficult to install following an online video. Unfortunately it did not fix the issue••power switch won’t turn off. At least the battery stays charged and plays for hours.

Used to replace the aging battery in my Momentum 2.0. It’s almost identical to the original battery and fits inside the device perfectly. The battery life is back to what it was really when I originally purchased them.

I had two sets of Sennheiser Momentum Wireless 2.0 headphones; they are approximately 3 to 4 years old and would no longer hold a charge. Sennheiser no longer services / repair the Momentum Wireless 2.0 headphones. I watched YouTube for replacing the battery in headphones; I purchased this battery to complete the replacements. I completed the battery replacement on both headphones; they worked (played music) but kept getting low battery warnings while using the headphones like voltage was too low. I am very mechanically inclined; I have repaired many things in my life. I don't believe operation failure is due to my incompetence.

Only managed to charge the headphones with this battery once or twice and now no matter what cable or plug I use they refuse to charge now at all. Too late to return at this point too. 😒