Wow..... I always said i wasn't a technical guy...I guess reading your post solidified that....I have no idea what you just said.....But i think i understand.....So if i want a warmer Vape then go with the red ones......But if i go with the red ones they are not protected for stacking? The ones that I'm using now are better for stacking because of the protection But not as good of a vape that i can be getting from the red ones....I think is that Correct? And the LiFePO4 are defiantly not as good as either ones of the AW bats? Please Please Correct me on anything and everything....Thanks for your time Quick
Rhino. If you're OK with the vape you are getting now then stick with the AW protected batteries -- the first ones in your list.
AW RCR123a Protected 750 mAh Battery
Far and away the best choice. Only way I'd consider the red ones is if you're
really unhappy with the vape you're getting now because it's too weak.. And yes, I wouldn't even consider the LiFePO4s because they have such a small Max Discharge Rate. They would work but they are not protected and since you would be over driving them to such an extent that I would expect their life to be greatly reduced (number of recharge cycles).
Here's some basics that were referred to:
mAh: (milli Amps per hour) This is a capacity measure. If you were to draw the mA listed for 1 hour the battery would go from charged to pretty much drained. So if it is rated 750 mAh that means that you could draw 750 mA for 1 hour. Thats how much juice the battery holds.
Max Discharge Rate: Just how fast can you drain the battery. In other words what is the max rated current the battery can supply. This is an instantaneous measure and not over time. This figure is usually given in mA (milli Amps) or "C". 1C is equal to the mAh but without the time component. If the battery is rated at 750 mAh, then 1C for that battery would be 750mA. It is very common for batteries to be rated with a max discharge rate of 2C. A max discharge rate of 2C for that 750mAh battery means that you should be able to draw (sustained) a current of 1500 mA. Or in other words the battery is capable of being drained in 1/2 hour. If you exceed the max discharge rate for some amount of time the battery will overheat. At the very least you will decrease the normal life of the battery. Those red ones are designed to be capable of delivering large amounts of current -- high amps. They have a max discharge rating of 8C. That means they can supply a (sustained) 4.4 Amps of current. Because they have a capacity of 550 mAh (550 milli amps for 1 hour) at 4.4 amps you would drain the battey in 7 to 8 minutes -- and they can handle it.
We have a fairly high current draw application (low resistance). Vaping at 6v and above you're drawing 2 to 3 Amps, or at least you would be if the battey could supply that amount of current. Generally speaking, we overdrive our batteries by operating them above the max rated discharge rate. It's not so bad though because usage is "pulsed" -- you push the button for a short amount of time and then the batteries get to "rest" and recover (cool off). Remember that every case of exploding batteries involved some sort of extended button press or suspected short circuit? Like the guy who had the button held down by having the thing in his pocket. Another guy wasn't getting any vapor so he held the button down a lot longer than normal a couple of times before the incident -- probably had a failed atomizer that was shorted.
Ohm's law: I = V/R (it's the law, it's not just a good idea

). The equation has to balance. So pick 2 values and you have determined the third. Let's say your 2 stacked batteries have a voltage of 7v. A Joye 510 has a resistance of 2.2 ohms ==> that circuit/load is going to try to draw about 3 Amps of current. The batteries you are using can't provide that current so you will see a voltage drop while trying to draw that current (the resistance of the atomizer is what it is and doesn't change).
If you were using those red ones you might not. By the way those red ones are just going to produce too much voltage stacked anyway. They charge to 4.2v. So let's say stacked you have 8v. And your atomizer at 2.2 ohms ==> 3.6 Amps. The batteries are rated to supply 4.4 amps so you would be well within the operating range of those batteries. Unfortunately the 510 would probably not last very long and it would probably be too hot of a vape anyway. Still, those batteries are not protected. What would happen if you melted the bridge/coil on your 510 and it short circuited. Those batteries have no shut off so they're going to produce a huge current for a very short amount of time. You might be the first person to actually melt a SB, or at least melt the spring. If you short circuit a protected battery the internal "circuit breaker" trips and opens the circuit.
Protected batteries: Have a sort of circuit breaker built into the battery. The circuit breaker trips if the battery is over charged, under charged/drained, charged too fast, or discharged too fast. Without the "circuit breaker" you can ruin your battery or touch off a reaction that feeds on itself (thermal runaway -- sort of translates to "explode")
So we overdrive our batteries for very short amounts of time with around 2 or more amps of current draw. Probably just fine. On the other hand those those LiFePO4s have an unusually small 0.5 amp max discharge rate rating. You would be seriously overdriving those. Again, I wouldn't expect them to explode, melt or vent but... I wouldn't expect them to last very long and if anything happened at all there isn't much margin there.