Real batteries not the fake stuff on eBay,
Verified Purchase(What's this?)
This review is from: Xbox 360 Rechargeable Battery 2-Pack (Accessory)
This is the real deal. I've been using these batteries for almost a year and they still hold charge like the first day. It's amazing how well these still work and I use them about every other day of the week so I get good use out of them.
BTW - the fake batteries that claim to be authentic on eBay are not and you can tell if they are fake just not by how they dont hold the charge long enough, BUT they weigh a lot less then these authentic batteries. The one's I purchase here on Amazon weigh more which means it has more lead for capacity then the fake ones that say 3600mh.