jimho, I baaaack; you asked for it... what i get is that 5 is too much for the LR's 510/306 attys.
What can i use on the 5v setting and will it simulate what; that i would be getting from a typical mod?
Or if from what i read, vapers are using 3.7 and 5 and 6 for most mods.
How does that compare to my power amp using the BB mod from altsmoke?
And what 510 attys would be used ?
Yeah, I asked for it.. you can pay it back in a few months when the next guy asks you

... I'm going to answer but my advice to you and anyone new to this is to stick with the standard and eGo batteries for a while (at least a month) till you figure out how to make it work and find some juices you are happy with.. experiment with cartos, dripping, LR attys and different fillers etc till you find what suits your style best. Save playing with higher voltages once you've got a feel for vaping - consider some people stick with eGo's and even standard 510 set ups without ever messing with HV.
The simple answer I already gave you- at 5V you should use a standard atty with your mod.
Fortunately my wife is traveling and I don't have any early meetings tomorrow so I can take some time to try and answer this without over complicating it .... the problem is there are buts and exceptions to everything..... with that in mind, here goes...
MODS
Mods are available to get all kinds of voltages- 3.7V is the most popular but more and more seem to be heaing to higher voltages. Batteries are available in 3V, 3.2V and 3.7V ratings (nominal values vary due to battery chemistry and battery protection). The biggest batteries with the largest power ratings and highest current drain ratings are at 3.7V. 5V has been available for quite some time primarily off of USB ports- 5V battery mods are available either from regulated stacked batteries or stacked batteries with a resistor in line with the atty (note these aren't really 5V- you can't get around Ohms law). 6V and 7.4V mods are also widely available usually by stacking 3V or 3.7V batteries - all can be had as flashlight mods as well as box mods with varying degrees of fit and finish, overload protection and regulator circuitry ....
Power and your sweet spot
Assuming you understood what I tried to explain before, the next thing you need to understand is where Power comes from and what it does....
Going back to my kitchen sink analogy it would be the volume of water per second that comes out of the faucet.
Mathematically
Power (Watts) = Voltage x Current ; OR apply Ohm's law and Power = Voltage * Voltage/Resistance = V
2/R
The reason you need to know this is at some point you will find a sweet spot where you like to vape your particular juice(s)... that sweet spot is actually the power that your atty is burning at (for this discussion's purposes and practical purposes, the power that the atty consumes is the power it releases) ... From what I've read and discussed, most find in time that between 8 and 11 Watts works best for them- YMMV. Remember I said there were "buts", the cone on the eGo has an amplifying effect...
My sweet spot is 11 watts this week and I'm using a 3.5 ohm atty at 6V with juice mixed to stand up to that heat ... two weeks ago I was using different juice and 4.2 Ohm attys at 6V... if that breaks down or I don't want to lug my 6V mod with me, I'll easily go to my eGo with a 1.5 ohm atty (6.8 Watts) and still enjoy it with different juice ... as long as the cone is on.
Attys
So power is governed by voltage and resistance- Voltages are determined by your battery/power supply. 510 attys are widely available in the following resistances:
1.5, 2.6, 4.2 and more recently 2.0, 3.5 and 5.2 Ohms are starting to show up at some of the suppliers. Standard is 2.6 Ohms. ...But... I've also seen 1.7 Ohm- and others are available or can be custom ordered if you want to buy quantitys.... And there's cartos which come in lower than standard attys, and even LR cartos - I don't use them but some people swear by them....
The game here is finding an atty (or carto)/voltage combination that does not draw more current than your battery or supply can provide, and gets you to
your sweet spot.
Which Atty to use
Lots of folks use LR attys with eGos and 3.7V sources - others find standard attys fine- you should not use a 1.5 LR atty with a standard battery- I'm not sure if 2 ohms exceeds the standard 510 battery's rating but should be fine with an eGo. Most of the vendors specifically recommend against using the LR atties above 3.7V.... At 5V (depending on your source) you can look at the standard attys or the 3.5 or even 4.2 if you want a cooler vape ... 6V is a bit much for a standard atty although some people who like tobacco flavors do it and they go through allot of attys - at 7.4V I'd say go with a 4.2 or 5.2 atty. Again, go back to the earlier info I put up and make sure your atty/battery combination doesn't draw more current than your battery can supply.... As you go up in voltage (5,6, 7.4V) you have to stack smaller batteries with lower capacity and lower discharge current - but you end up drawing less current to get the same power with higher attys and higher voltage - again, trade offs, buts, and alot to think about.....
If you got this far and you are still with me, congratulations- It's more info than should be in the newbie section and there is allot of other info I left out regarding battery selection that is definitely not appropriate to go into here, but you asked.
Last thing I'm going to torture you with is that there are a few newer mods out there with variable voltage settings and next month there will be more. So now you can make whatever you get from your batteries look like anything less than that... pick your atty- whatever you have on hand, dial in the voltage to get your sweet spot and as long as it doesn't draw more current than the battery can source (or blow the atty), you're good to go - ;-)
Comparing to 5V off a regulated power supply
Now with all of that in mind, how does all of that compare with your BB mod plugged into a $30 power supply that can be bought at Radio Shack and allows 3V or 5V at 2 Amps?
Well for starters, your power supply has to be plugged into a wall. that said, As long as your attys don't draw more than 2 Amps, compared to a battery powered device that doesn't have a built in voltage regulator (i'm assuming they did a reasonable job converting to DC) you'll get a more consistent experience plugged into the wall, and your batteries will never run dry - I bet you though I was goig to slam it. But try sticking it in your pocket and walking 5 feet from wherever you're plugged in.... Once you go to battery powered devices you generally will have trade offs for portability.
Now go read the library, and buy lots of juice samples and have fun playing with different attys and drip tips and cartos, and learn how to clean your attys etc ... there's no reason to buy a mod till you can get a consistent vape out of your eGo batteries and can pinpoint what you aren't getting out of it. And of course if you need help figuring out what's not working ask here.....
I'll be back tomorrow....