Hey folks,
I was looking to upgrade the battery on my Elite Gold and came across this thread. I thought I would share what I did with you. It just so happened that I started this because I wanted to upgrade the battery in the PS4 controller. I bought a 2000mah battery from http://www.adafruit.com/product/2011. I used this in my PS4 controller and then took my PS4 controller battery and used that to upgrade my Elite Gold headset with amazing results. I did this last night so I can't say for sure what the battery life will be but it's definitely better from my anecdotal observations. To use the controller battery in the headset, you have to pry off the outer case like in the picture. Be careful not to damage the tiny circuit-board. This actually fits perfectly in the headset once it's out. I put some double sided tape on the back before installing it into the headset. Worked like a charm. By doing this I triple the battery capacity of the Headset. The battery is a couple of years old so it probably doesn't hold the same charge anymore but it's better for sure. Hope this helps someone.
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