Re/code is reporting that Apple is currently seeing about a day’s worth of battery life. The company was notably sheepish to mention anything specific, but internally Re/code says Apple’s current marketing strategy is that users charge it over night to get full use during daylight hours.
Interestingly, the report notes that Apple is unhappy with current performance and the situation is very much still in flux. Apparently, Apple is doing many different things to improve battery longevity, by the time the device launches in ‘early 2015’.
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Things I've heard about the 'iWatch' 3rd hand (so unreliable):— Seth Weintraub (@llsethj) August 30, 2014
<24 hr battery
looks techie good, not fashion-y
screen rectangular, not huge
Questions about battery life were only amplified by the fact that the Apple Watch has no battery indicator at all in the interface. Early commentators assumed this meant battery life was sub-par. Apple has a lot to work on by the time the Apple Watch launches, in 2015.