DC 3.7V 650mAh 602540 Rechargeable Lithium Battery for Sennheiser Momentum 2.0 HD 4.40 HD 4.50 450BT Urbanite XL Wireless Bluetooth Headphones Aerox 9 Aerox 5 Mouse

Fixed my 11 year old headphones that I’m soul bonded to with this amazing work great battery that lasts for days and great value for the money

Perfect fit in my Sennheiser HD1 headphones and battery life is back!

Battery and control module worked without any issues. Wires are correctly color coded as well.

So, i bought the Momentum 3 battery for my Momentum 2 headphones. First off, it is shorter so i put a small piece of foam by it in the tray to hold it in place, secondly it is thicker, doesn't matter. The plug is the same and this battery has 30% greater capacity so I decided to go for it. I bought a correct one a while back but it never worked for charging so I tried again with this one. It indeed charges. Anyway, baring a rapid failure to hold a charge I consider this battery great. It has revived my 10+ year old headphones to working more than a couple hous a charge... I hope I get something comparable to when they were new or better.

After installing and charging the headphone the headphone charge status shows fully charged but the Bluetooth status shows only 10%. Factory resetting the headphone and re-pairing does not resolve the issue. Don't know if it's the battery or my headphone.

Battery lasted about 1.5 years. Original lasted about 6-7.

Got this for my epos gps 370. Connections works but the battery is a little bigger than the OEM but I clipped some plastic out of the way and got it to work for the most part.

I used it for the Sennheiser HD458BT. It works and suits the space.

Sennheiser Momentum 2.0 On-Ear Wireless に使用。 もとのバッテリーと完全に同一サイズだった。 家族のもので正確な容量は確認できていないが、丸１日程度もっているとのことで、新品購入時と大差ないらしい。

Brought my Sennheiser MOMENTUM 2.0 AEBT back to life. Forever greatful.

Ottima durata i wireless sono tornati come nuovi

Easy replacement, being using it for months and no issues

It fitted perfectly and does the job great service