If you're the type of person that plays with their Samsung Galaxy S3 nonstop and then runs out of battery before the end of the day you may be interested in this. Samsung have officially 'released' an extended 3000mAh battery for the Galaxy S3. While I'm unsure of the current availability of the battery, there are several sites offering it up for pre-order, and several accounts on
XDA of people being able to purchase it.
Update as of 19 March 2013
This product has now been released and I have purchased one from here on Ebay. Once I receive it you can expect some photos and a review. Let me know if you have any ideas for measuring the performance of a battery.
