a good battery is a user who vapote lot We feel that the product is of quality (texture, welds and material) As against it rarely takes a whole day, too bad that's why I put one star less, (but I still have a great vapoteur.) Now I would see in time (at the time I write this only a few days I use it)
For I am always disappointed batteries generally not brand "EGo" This seems to be the original so I'm confident. I'll let you know.