The Sony/MuRata VTC6 cell features phenomenal versatility and attributes. The cell has a "Maximum Balance" in terms of overall performance, with high capacity and high discharge/drain capabilities. This is exceptional being a 18650 sized cell, which was unheard of just a few short years ago. Features a True 15 Amp Constant Discharge Rating, but 20 Amp Constant Discharge Rating by the manufacturer if the cell is kept below 176°F (80°C).
The VTC6 battery gives you tremendous run-times in devices that require much higher discharge/drain that other cells can't deliver. It is popular in power packs and battery packs, and make an excellent option in high-output flashlights, too.