I can blow through a pair of brand new AA batteries in my Xbox 360 controller in a weekend. After blowing through my entire package of 8 AA batteries in less than a month of gameplay, I decided that I had better get something that was rechargeable or start investing in Energizer bunny stock.
I prefer the adapter cords that let me play right out of the electrical outlet as well as let me switch to wireless battery-powered operation. And Microsoft has the perfect solution in their Xbox 360 Play & Charge Kit. It's available in either black or white, so I chose the black model to match my controller. The rechargeable NiMH batteries are completely enclosed in their Xbox 360 controller battery case, so they can't be used for anything else, nor replaced when they finally lose their ability to recharge, and that's a major drawback to buying the Xbox 360 Play & Charge Kit.
The adapter cord is about 9 feet long, about twice as long as any other adapter cord I've ever had, and I like that. When I'm ready to recharge my controller, one end of the adapter cord fits onto the rechargeable battery pack and the other end plugs into my Xbox 360 console. I don't have to stop playing my game to let the controller batteries recharge, something I really like about the Xbox 360 Play & Charge Kit. That's exactly what I was looking for when I bought it. The adapter cord LED light will glow red when the batteries are recharging and green when the batteries are fully charged again.
I still blow through my batteries in a weekend of gameplay, but I'm no longer considering investing in Energizer bunny stock. I may consider investing into rechargeable batteries and a recharger next time though, because I'm not sure I want to keep forking over $20 every time I need a new set of rechargeable batteries for my Xbox 360 wireless controller. This set only lasted me a week of intense gameplay, and now the rechargeable batteries won't hold a charge. I can still play with the adapter cord though, even with the dead batteries.