Not a great product
This product looks nice and feels light. The battery itself will power on by itself. Even after powering the battery off, by pressing the button 5 times. This battery does not work on all 510 thread cartridges. The bigger the cartridge the less likely the battery will not work. It will make a sound like it's heating up for a sec and then stops. I would not recommend this battery.
Verified purchase: YesCondition: New