You don't need the exact same one. They are just rebranded. You can use any 3.7v 750mAh battery as long as it has a battery over charge yellow wire. And you can buy the molex little connectors to make your own wire

Check my post out and video: http://www.head-fi.org/t/726387/how-to-disassemble-logitech-ultimate-ears-9000-headphones-battery-change The pads use double sided thin tape, just use a hair dryer to get it off but make sure you don't apply too much heat on the pad. The battery is on the left ear...

I forgot to add, once you take the ear piece off, you don't need to use double sided tape really, because there's groves on the actually headphones that it grips under. Logitech done it on purpose! Also I noticed there's a slight hiss when using it while on charge, has anyone come across this...

Yeah the battery is just a standard one. Here is the exact replacement: http://m.aliexpress.com/item-desc/1889310807.html Model no.:Sanyo 553436 Voltage: 3.7V Rated capacity:720mAh Type: Li-ion battery SIZE:34*38*6mm Thanks :) P.S. There's clips on the ear piece where the pad clips...

I could not find one video on the internet of these Logitech UE 9000 Headphones being dismantled, so I thought I'd do a video of how to do it   Here are pic's and video link:                            

What's your best headphones?

I just bought the 9000 UE in new condition for £60. The problem is, the battery won't hold its charge so it was sold for cheap on ebay. You can't even buy a replacement from Logitech which sucks, but I will buy one of these or make my own...