Doesn't slide in as smoothly as an OEM cover, but it holds the batteries in place no problem.

This was a perfect replacement for the existing battery covers that batteries had corroded in

I've used and seen a lot of bad battery packs for 360 and these break that third party grudge I have

The covers I received lack the small piece of foam rubber that's present in the original battery cover; consequently, the batteries aren't held snug

They fit well in my original Xbox controller; a leaky battery damaged my original

My rechargeable batteries finally crapped out

The batteries were easy to install and the case holds into place without falling out.