Arc v2 looks nice, but it's all about the 21700s now. Golisi/efest 21700s are 30 amp continuous with 3700 mAh. Also the Samsung 30t and 40t batteries are out now as vapcell rewraps. 30t is 35 amps continuous with 3100 mAh. 40t is 30 amp continuous with 4000 mAh. Tested by mooch. All 3 are currently cells are currently the best batteries available to vapers.