The S1 also includes a USB port for charging mobile electronics, but considering the relatively small battery capacity, powering your phone with it may not be the best choice. (treehugger.com)
With OEMs opting to make their flagship smartphones thinner each year, we're starting to see more companies employ fast charging technology as a way to compensate for smaller battery capacities. (xda-developers.com)
They were designed for smartphones, which are all about squeezing as much battery life as possible out of much smaller battery capacities, while still providing decent performance. (digitaltrends.com)