The battery case s4 is a the water resistant version of the regular S4 and just like it has a Snapdragon 600 chipset with the four Krait 300 cores clocked at 1.9GHz and a 2,600mAh battery. this have automatic sleep/wake filp.
But the two differ on one key factor for the battery test – the screen. AMOLED and LCDs both have their strengths and weaknesses, so let’s see which one does better when you draw the line.
Call time should be unaffected – after all, the screen is off. That wasn’t the case, however, as the Galaxy S4 Active lasted an hour and 20 minutes less than the Snapdragon 600-powered S4. We’re not sure how to account for the lost time, but we did notice some software differences, so this may be it.