I just wish we had these exact controllers as they are with one exception: AA batteries. If you haven't experienced how wonderful it is to have this capability paired with a 4 pack of eneloops, you are missing out on wireless controller bliss. Imagine having 40 hours of battery life (as opposed to 8-12) and when the batteries do get low, instead of having to plug the controller in and deal with a wire, you just pause the game, pop off the lid, swap batteries from the recharger, and pop the lid back on. Voila another 40 hours of battery life at your hands in a matter of seconds.
Now we need videos like this to guide us on how to replace that rechargable battery once it goes through too many cycles and stops holding a decent charge. This can happen in just a couple years if you game a lot every day. I'm glad it's doable to open up, after all the prerelease pictures making it seem impossible, but based on this video it's not something I ever want to do. I used to open up my DS4 no problem for cleaning all the buttons and replacing joysticks. But this one? No chance.