It's damn good (350 more mAh). Makes me think the whole 'thin phone' contest between manufacturers is unnecessary and at our expense. There's no point having a phone that's 8mm thin if the battery life isn't that good, it's like having a fast compact sports car with a 20 litre fuel tank (roughly 1 gallon).

The extended battery makes it how it should have been, now the phone has 1 profile top to bottom, no butte, and the camera gets a bit of protection.

It's also good having a spare battery in the original 1650mAh one.

 

Yep. I got one pretty soon after they came out and the extra juice in conjunction with power saving setting tweaked up makes the phone last a good while longer.