I've not been having any luck with these. Got some yesterday, and initially I liked them. However, my first one after a few hours quit working. I thought it was my atomizer base, so I switched bases. Still no fire. Killed my battery (No light, and dead; Thankfully it lit up again when I put it back on the USB charger). So thinking it was just the atty head, I switched to a brand new one. Same thing, and it killed that battery. Anyone have this problem ? Stamped Ovale LR on the side of the atty. Back to Standard resistance and no problems.