Sadly, the world is awash with aftermarket batteries claiming to be of much larger capacity for same physical size, but when you actually use them, it quickly becomes apparent that most of them are no better than the original and, in many cases, worse capacity than the original. There are some (extremely rare) exceptions to this, but the vast majority of the time, the increased capacity is either B$ or the cells don't last at their capacity for more than a few months.
Anyway, I'm fine with 10hrs if I can simply swap-in another Samsung battery within a matter of seconds.
