AW brand has a lot of respect as a great brand. It is a bit more expensive than some other brands, but I got talked into them and am very happy that I made that choice.
I've just used AW 14500 IC (protected
batteries) on this mod. They are available at several battery suppliers on this forum. Super T Manufacturing is another one mentioned earlier on this thread. There are others.
New to buying your own batteries all the talk can be a lot to absorb. There is a lot of discussions between "high drain" and "protected" and a lot of opinions. It seems a lot of experienced vapors like IMR (High drain).
I chose "protected" -----well, because they are a bit safer-----and am just beginning to check out the high drains (IMR) so don't have a comparison.
There is a good write up on batteries in the library here at ECF---at least I think that's where it is!
Make sure you buy
at least 2 so you can have a spare charged and ready. They will most likely last longer than your KR808's -- but not necessarily a lot as there are other factors besides "MaH". I seem to recall the IMR's are 600 and the IC's 750. Hope this helps.
I think you made a great "upgrade" choice, By the Way!!!