Yes you can use your 901 atomizer on your KR808D battery.
A few issues you might find:
Some find the draw airy, so you can wrap a bit of Teflon tape around the KR808D battery
threads to block the air holes. (a tip by Vet member 42109)
Also if you find that you don't get good contact between the battery and atomizer, you can raise the center post of your atomizer or battery by lifting the center post just a small amount and VERY gently with a paper clip or small eyeglasses screwdriver (be careful not to pull up too much, as you can ruin the center insulator that the center posts float in and it will cause a short). Crashtestjeep's post has pictures that can help
http://www.e-cigarette-forum.com/fo...have-atty-works-1-device-but-not-another.html
If you have an automatic KR808D battery, dripping can cause liquid to travel inside the battery air hole. Do keep an eye on it and make a small
thread of tissue to push inside the battery once in a while to soak up any liquid that has traveled inside while letting it sit with the "ash" end up.
Clean your battery threads and connection well before putting it back on the charger. It can get gunky from the dripping liquid.
Happy
vaping!
