Murtazin posted a follow-up tweet on the subject just the other day. This one contained a diagram implying that the Galaxy S7 will provide users with up to 48 hours of power on a single charge. The screen-on time measured about four and a half hours, and the brightness was set at 75%.
The Samsung Galaxy S7 is expected to carry a 3000mAh juicer inside, up from the 2550mAh battery powering the Samsung Galaxy S6. Speaking of the Galaxy S6, our custom battery test showed the handset running 7 hours and 14 minutes before demanding to be fed. To put that in perspective, the top phone on the list when the test was run last March, was able to ride its battery for 10 hours and 42 minutes. That model was the Motorola DROID Turbo, which carries a 3900mAh cell.
The Samsung Galaxy S7 and Samsung Galaxy S7 edge should be unveiled later this month, February 21st to be specific, during the Samsung Unpacked event. That is the day before MWC kicks off in Barcelona. Battery life should be improved with the Marshmallow feature Doze included. With Doze, inactive handsets are put into a deep sleep state, and apps are cut off from the network until they are needed.
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source: @eldarmurtazin via Phandroid