I have been using these for my E-Cig VV/VW mods and lasers. They work great with the best actual time to recharge/capacity out of many I have tired. The SXD only draws 2-3A and the X-drive about 1.6-2A so no need for some crazy high discharge cells though these do have good capability @ 15A continious as well if you ever go with a 4-5A boost build but they have really great capacity based on my real world usage. 26650 KeepPower 5200mAh IMR26650 High Discharge Flat Top - Batteries, Chargers, and PowerPax Carriers