Originally Posted by bharat2580
Allright. Things observed so far
1. The samsung battery is way better then the original one. Increased base a bit warm sounding and no more fatigue due to highs. But the original battery could be to blame.
I found the same thing, my Samsung battery (Cell made in Japan, Assembled in China) is much better than stock:
Highs have more detail but at the same time are less harsh than stock battery, the highs are smooth and airy, (the harsh highs of the stock battery actually blur the treble detail). Also the bass extends very noticeably deeper than stock battery and the sound stage is ever so slightly more open.
These sound observations led me to believe that the Samsung battery may quite well have a lower internal impedance than the stock battery.