Well, for one thing, I'm amazed at a kit with only one battery. If it's a "sampler" thing, I suppose that makes sense, but it's nice to have a spare to use while the other is charging. If you decide you like using e-cigs, you'll want at least a couple more batteries.
Now, visit the
510 forum. The 520 is exactly the same as a 510, except it's just a bit longer. You'll find lots of useful stuff on the 510 forum, which is all applicable to the 520, because there's no difference, except in the size of battery, and I suppose the capacity of the juice reservoir, depending on what 510 stuff you're comparing to. The 520 atomizer (sometimes called 510 Mega) is a bit longer, to accomodate the longer 520 cartridge, but since you have cartomizers (combined cartridge and atomizer), that doesn't apply to you.
There's a lot of info on the forum about the CE2 cartomizer. I don't like it myself, because of needing to use the
5ml Filler Needle to fill it. But I have also dripped into mine, and it works. Not sure how many drops you can drip and have it still work, but not flood or leak, but I've done 4 at once.
The 8-hour charge thing is just holdover language from the days of NiCd and MiMh batteries. Ignore it. Charge until the light goes green. Yes, in fact, there is some hazard with some lithium ion batteries. The likelihood that you'll encounter problems with your 520 battery assembly and the USB charger is extremely remote.
As you've discovered, Jeffrey is a great guy. I highly recommend Wordup.
