Don't listen to the 901 bashers, lol! Seriously though, I love mine and have used it almost exclusively for over 2 years. I don't know why manufacturers starting printing "Atomized Cartridge" on their packaging because they are just regular cartridges inside. Those 5 aren't going to last you very long so order some juice pronto! Yes, the batteries come already charged, so go ahead and use one. You can put the other one on the charger to top it off in the mean time if you want. It won't hurt it. When the one you are using starts flashing at the tip LED, it's time to swap them out. When putting your battery in the charger, screw it in gently and don't over tighten. The charger light will turn red while it's charging and green when it is ready to use.
Please do watch the video about proper inhalation technique. Most times manufacturers will send the atomizer with a mouthpeice already attached to it- this one is empty! Be sure you have pulled that one off and put on one from your box of cartridges. Don't throw the empty one away though, you can stuff it and refill it with liquid when you get some.
901 attys DO have a break in period and sometimes are disappointing at first. But after the first day or two, woo-hoo! Here, I'll show you:
YouTube - In Defense of the DSE901 002
Dee
PS- Hey! You're in Arkansas, me too! If you're close by I'd be happy to get together with you and help you learn about your 901. I'm in Springdale.