These batteries are wonderful
Previously, I used 2 supposedly 40A max draw, 3200mAh for nicotine inhalation devices and they'd die within 12 hours. Two of those last longer and have zero issues. I don't have to switch them out constantly, I don't have to worry about them dying even though the battery meter says it still has 15% life on both cells and I didn't have to pay $25 for two. I got 4 of these and, even with shipping, they only cost $27. I swear by these.