When Apple announced its Apple Watch wearable last September, there was scarce mention of the device's battery life, leading to the natural conclusion that battery was posing a problem for the Apple Watch team. At MobiHealthNews, we speculated that a shorter battery life was holding the team back from introducing sleep tracking, increasingly considered a must-have feature on fitness wearables....
As wearable all-day activity trackers compete to be smaller, more convenient, and more comfortable, there's one problem many of the newer entrants are running into: battery life. If users are supposed to be wearing a tracker all the time, when do they plug it in? And the point when a user takes off a wearable device to plug it into the wall is the point when they're most likely to lose interest...
