Hi, well I bought the deal on the joker last night and I cant wait to try it out, but I also wanted to buy some spare batteries for it, it comes with the rechargeable cr123a 3v 400 mah, and I spent quite a while on the net and couldnt find any in the places I know to look. Most of the batteries are like 3.6 volt and run from 650 mah to 900 mah and with the joker being so sophisticated with all its failsafes well I am a leary to just put anything into it. Do any of you know if the mah is important and also is it normal for a 3v to charge up to a 3.6 volt, thanks so much for the input. I really love my ecigs and have been off of analogs two years in august. thanks. Nat
