I have to say I am loving my XL manual I got on Monday. This is my first 808 batt. I was using 510 with adapters or my mods with adapters to be able to use cartos. I bought a usb charger for it since it was my first time trying the battery and it is working great. If you look at my siggy you can see I have quite a few devices and this new battery is now in my everyday all day rotation. I use between 3 and 5 devices a day with different flavors and I am proud to say this is one that stays each day while other mods might get rotated out. So I just want to thank V4L for such a great battery!