Some people have said it doesn't matter. During the day I only charge a battery when it is out of charge, and at night I charge everything I am not using - 3-4
batteries of 2 kinds and my PCC. I leave a PV set up overnight with another spare battery so I don't have to mess with screwing things together in the morning
.
BTW - To make charging take less space I use a Rosewill 4-port USB to AC adapter w/ 2 amps max (I got it at Newegg.com). With battery cables that have the skinny USB plugs I can fit 4 of them in it and charge 4
batteries at once. (each normal kind of e-cig battery usually needs 1/2 amp of the 2 amps so there is enough power to charge 4, or enough to run a PT and charge 2 at the same time).
BTW - If by 808 you mean KR808D-1... Some day, just for fun, try a standard (not LR) DSE901 atty and carts (carts or drip tip if you have a manual battery) on your KR8. It's a nice setup for trying new juices (easier than filling cartomizers) - sort of a softer airier vape than cartos but I like it. I got my 901 atty and carts at LiteCigUSA.net as well as my aluminum drip tip. No adapter needed to put a 901 atty on a KR8.