MNKE batteries are the highly know for their performance characteristics by many of the mechanical-mod users. Out performing almost every battery in its class, they are also the safest batteries available. The 3500mAh batteries capacity to hold a charge even above its rating of 3.7v means its capable of lasting much longer than most other batteries. For builders of sub-ohm coils on a mechanical mod, the noticeable difference in the performance is unbelievable. If quality and performance for your 26650 battery is important choose this MNKE 26650 flat top battery.