According to a recent post by Ice Universe on Chinese blogging site Weibo, the Gear S4 (or Galaxy Watch, or whatever it ends up being called) will feature a 470mAh battery, which, if true, is a healthy bump up from the batteries found in the Gear S3 and the Gear Sport (which had 380mAh and 300mAh capacities, respectively).

Translated from Chinese
Considering how well the Gear S3 and Gear Sport handled their batteries, each managing to last an average of two days on a single charge, the Gear S4 could be a beast when it comes to battery life. Of course, it may also feature more bells and whistles than its predecessors, which will surely drain the battery quicker, but we'll have to wait and see. And it seems like there's not a lot of waiting left, as the latest reports from Korea pin the Gear S4 for a launch in early August.
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