Samsung SDI has introduced a curved battery that is made for wearable devices, like its own Gear Fit wristband. The 210mAh cell might seem rather low capacity for a smartphone, but it happens to be the largest capacity battery for a wearable device. At its current size, the battery would allow the Gear Fit to outlast the competition in time between charges. Speaking of competition, Samsung isn't alone in this field as country-mate LG is also producing a curved battery for its LG G Flex
The new Samsung battery features a process to increase the energy density of the battery, which is required in such a small cell. The goal for Sammy with the wearable batteries is to pack enough power to run a device like the Gear Fit, but in as small a size as possible. At the same time, the battery has to be flexible to a point. This is why the tech titan's V bending technology is used in the production of the cell, along with new lamination technology.