Aftermarket / Expanded battery?

[UnfixedPyle]

I personally don't have any current issues with the battery life of my L920, but I was wondering if anyone had found an aftermarket battery or expanded battery. I have seen them now for the 820, and I had one for my first gen Focus. I know those are "user replaceable" batteries, but it really isn't that hard to open up the L920 to put something else in. Anyone know of one of these, or plans for these?

 

[explosive0]

I personally wouldn't trust an aftermarket battery, especially when it's not easily swappable. Factor in the probability that doing this will void your factory warranty. Not worth it, in my opinion.