Already looking to get more KR808 batteries...which one?

[spaceballsrules]

McDougal (guessing sir) lr on a kr808 is usually 2.0 ohms due to the higher voltage. It's all relative to the voltage of the connection. A joye ego for example comes in at 3.2v on load, so 1.7ohms is still going to pull less wattage then a freshly charged kr808 batt outputting 4.19v with a 2.0 ohm carto.

I just learned that your personal vaping preference can be measured by a single number...wattage, found by using the formula '(Voltage x Voltage)/ohm'

For example, I have found that I like a 2.8 ohm carto on a 3.7V battery. That means the formula would be (3.7x 3.7)/2.8 = 4.89 watts

4.89 is my preferred number.

If I wanted a cooler vape, and added a higher resistance carto, say 3.4 ohm, I would get (3.7x3.7)/3.4 = 4.03 watts.
If I wanted a warmer vape, and added a lower resistance carto, say 2.0 ohm, I would get (3.7x3.7)/2.0 = 6.85 watts.
If I want pure heat, I would try a 5V passthrough with a ohm carto. (5x5)/1.5=16.7

Mr. Morandir, sir, please CMIIW. Thanks

minus? really? is it because its unregulated?

I can tell you that the Elite stays in the sweet spot for most of its charge. It's only the first few toots that are a little warm, and the last few toots that are muttled.

yes unregulated butts are no fun

Just had to, didn'tcha ;D

the upside to the uregulated is that first half an hour or so when they are fresh off the charger. As a noob, I had the tendency to flood my attys thinking they needed more juice when in reality they were just losing power.
It's especially a plus to have a regulated battery when you are using 2.0 ohms. That sweet spot can fly by really quick. On a standard 2.8-3ohm the difference is very gradual.

That's probably why the V2 cartos work so well on the Elite.

BTW I am this close to pulling the trigger on a titanium KGO. Just waiting to hear from Brent about a few questions I had.

 

[Morandir835]

Actually Spaceballsrules sir it's Ohm's law, voltage divided by ohms equals amps, amps times volts equals watts. Wattage is the final key though in some ways...

 

[spaceballsrules]

Actually Spaceballsrules sir it's Ohm's law, voltage divided by ohms equals amps, amps times volts equals watts. Wattage is the final key though in some ways...

Electrical & Electronics, Ohm's Law, Formulas & Equations

 

[Cyrus Vap]

I think you're both right?

Cyrus

 

[Charlz]

I've wanted to stay away from the complicated bits by leaving out the wattage and simply referring to "my sweet spot". This thread has actually progressed very nicely though. Very good info for noobies. Gradually providing more info without jumping right into the complicated bits. It's very tough to discuss lr and such on a noob post without somebody jumping right to ohms law by the fourth post.

 

[Charlz]

BTW I am this close to pulling the trigger on a titanium KGO. Just waiting to hear from Brent about a few questions I had.

um....you'll be vaping at a different "sweet spot" there. LOL! I believe it's a slightly higher v device than what you and I are used to....emphasis on the "slightly"

 

[spaceballsrules]

I've wanted to stay away from the complicated bits by leaving out the wattage and simply referring to "my sweet spot". This thread has actually progressed very nicely though. Very good info for noobies. Gradually providing more info without jumping right into the complicated bits. It's very tough to discuss lr and such on a noob post without somebody jumping right to ohms law by the fourth post.

Yeah, this thread is pretty eye-opening, and does progress at a very nice pace. A little info, a little info there...lots of good stuff!

um....you'll be vaping at a different "sweet spot" there. LOL! I believe it's a slightly higher v device than what you and I are used to....emphasis on the "slightly"

I did see that the KGO does run at ~4V. Hmmm? It seems that most 3.7V batts run a little hotter than their advertised spec. Sup with that?

I am starting a new thread to get a better idea of what fits my needs.....

Never the less, if anyone has more to add to this thread, by all means, keep it alive. Thanks!

 

[Morandir835]

All 3.7v lithium ion batts actually start at 4.2v on full charge off load sir. The danger comes in charging them higher than 4.25v. On load is where it's chemistry comes into play. A protected batt will experience voltage droop to 4.01-4.14v depending on c rating, mah, load applied (ohms), and ic on the battery. A high drain which uses no protection because of safer chemistry will drop to 4.18-4.21v depending on the original charge, load, mah, etc. Protected batts last longer but the voltage drop is rather quickly to the 3.7v range, and they stay there for a majority of their charge. A high drain has lower mah (aw just put out 2000mah ones for example, that's as high as I've seen), but it holds it's voltage above 3.85v for a good portion of it's charge, then drops like a rock very quickly afterwards.

 

[Cyrus Vap]

Agree with all of the above.

Hopefully this isn't a rabbit trail and if it is I'll delete it

So what is it that stops batts from overcharging and getting into that dangerous level of voltage you mention Morandir? Is it a protection circuit in the battery or the charger?

 

[Charlz]

I did see that the KGO does run at ~4V. Hmmm? It seems that most 3.7V batts run a little hotter than their advertised spec. Sup with that?

Oh no!!! Me and my big mouth. I didn't mean to talk you out of it! I was just joking.That may be my next one. The Kgo gets great reviews. It's not that much different. It's not like a HV device or anything

 

[Morandir835]

Cyrus Vap sir there are a few ways.

1- remove your batteries as soon as the charger indicates it's done. If you can't do that, never leave it on for more than 8 hours after it's complete.

2- do a routine check (do mine every few weeks) of your batteries off load after charging to be sure they're coming off in a safe range.

3- use the highest quality charger available. For kr808's suggest the slim line from v4l, x-go use either a joye charger or smoktek they make sure their's are up to spec, and if you're going the mod route a pila charger. I've tried to overcharge imr 18650's on it, left the battery on for 24 hours trying to (this test is dangerous folks, repeat it for yourself at your own risk) do so. Off load voltage was 4.25v.

Hope this helps sir.

 

[spaceballsrules]

Agree with all of the above.

Hopefully this isn't a rabbit trail and if it is I'll delete it

So what is it that stops batts from overcharging and getting into that dangerous level of voltage you mention Morandir? Is it a protection circuit in the battery or the charger?

Absolutely not! Please post away. It's a great question!

Oh no!!! Me and my big mouth. I didn't mean to talk you out of it! I was just joking.That may be my next one. The Kgo gets great reviews. It's not that much different. It's not like a HV device or anything

Well, since I just bought the Riva today, I might not WANT a KGO anymore, unless battery life on the 650mah Riva becomes an issue. If I could have found a KGO with a 650 batt, i would have snatched it up immediately. The Riva should answer a lot of my "so what do I REALLY want?/need?" questions.

Cyrus Vap sir there are a few ways.

1- remove your batteries as soon as the charger indicates it's done. If you can't do that, never leave it on for more than 8 hours after it's complete.

2- do a routine check (do mine every few weeks) of your batteries off load after charging to be sure they're coming off in a safe range.

3- use the highest quality charger available. For kr808's suggest the slim line from v4l, x-go use either a joye charger or smoktek they make sure their's are up to spec, and if you're going the mod route a pila charger. I've tried to overcharge imr 18650's on it, left the battery on for 24 hours trying to (this test is dangerous folks, repeat it for yourself at your own risk) do so. Off load voltage was 4.25v.

Hope this helps sir.

Concerning point 1, some of the manufacturers suggest leaving the battery on the charger, plugged in, for at least 3 hours, even if the light on the charger turns green earlier (That's straight from the Riva's owner"s manual). Why is that? Or are they wrong?
Also, what would you recommend for measuring the voltage? I have seen cheap $10 meters that are just 2 connectors coming off an LCD readout. Here's one - Volt meter - notcigs.com

 

[Charlz]

Well, since I just bought the Riva today, I might not WANT a KGO anymore, unless battery life on the 650mah Riva becomes an issue. If I could have found a KGO with a 650 batt, i would have snatched it up immediately. The Riva should answer a lot of my "so what do I REALLY want?/need?" questions.

eh...what's the difference again between the riva and the ego batteries?

 

[spaceballsrules]

eh...what's the difference again between the riva and the ego batteries?

eGo is regulated at 3.4V and Riva is 3.7V CMIIW

 

[Morandir835]

Honestly can't tell you why they would have that in there Spaceballsrules sir. Leaving a battery on the charger raises the voltage slightly, possibly they want you to use it at 4.25v to get maximum life out of it.

 

[spaceballsrules]

Honestly can't tell you why they would have that in there Spaceballsrules sir. Leaving a battery on the charger raises the voltage slightly, possibly they want you to use it at 4.25v to get maximum life out of it.

What about the whole idea about the first charge. From the box it shipped in, charge the batt til green, toot for 20 minutes, then charge the batt another 2 hours. What purpose does that serve?

 

[Charlz]

they use the word "toot"? That's one I haven't seen.

Have fun with your new toy.

 

[Morandir835]

None I know of Spaceballsrules sir... That doesn't even make sense.

 

[McDougal]

the upside to the uregulated is that first half an hour or so when they are fresh off the charger. As a noob, I had the tendency to flood my attys thinking they needed more juice when in reality they were just losing power.
It's especially a plus to have a regulated battery when you are using 2.0 ohms. That sweet spot can fly by really quick. On a standard 2.8-3ohm the difference is very gradual.

I'm pretty happy with the 2.8 ohm cartos, and it's definitely a gradual drop on the unregulated. I only get a severe dropoff right before the battery dies, and I usually start charging before that happens anyway, since I have an estimation based on vaping time since the last charge. Plus, I don't want to strain the battery too much.

Anyway, yeah, the Elite looks to be right up my alley.

 

[spaceballsrules]

they use the word "toot"? That's one I haven't seen.

Have fun with your new toy.

None I know of Spaceballsrules sir... That doesn't even make sense.

Morandir, sir, I was mistaken. It's not 2 hours, just 1 hour, but it's the same idea.
Here is a PDF of the Riva manual.....http://www.liberty-flights.com/documents/manuals/riva.pdf

Charlz, I use the word "toot." Riva just says "use."