Life expextancy of the AW IMR batteries

[craftmath]

Ok after replacing one earlier today at almost a full tank I just got the flash about half way through. Prolly 2ml. Tried the unscrewing of the cap and it didn't give much more time at all. Guess these things are toast.

I'm in the same boat as you Garemlin. After 1ml or 2ml of vaping on a freshly charged 18490 battery, the voltage, not under load, is 4.0v. Pop on a 2ohm build Lemo and test the voltage and it reads 3.6. Then, when I take a hit with the Provari at 4.7v, the Provari cuts off and the light flashes. Take the Lemo off and the voltage now reads at 4.0v. That's some voltage drop! My temporary fix is to lower the Provari to 4.2v to 4.5v range and it seems to keep the sag from hitting the 3.2 mark, which cuts the Provari off.

 

[Garemlin]

Yeah I have no idea what is going on. Half a tank (Kv4) on a fresh battery and flash. Unscrewed the cap and screwed it back on and would not respond at all. Put the battery on my LUC and it is reading 3.7v. Reinstalled the battery and my Provari is reading 3.5v.

 

[JeremyR]

I'm just gonna add a thought here...

While the batteries sound shot at this point..

A lot of the problem may be running a 1.3 ohm at 4.5v is 3.5amps. Provaris range from 2.5 to 3.5 amp limit depending on which version you have. If your running at the amp limit it will wear the battery down fast. The higher the amp draw the faster a battery will run out.. The real solution for 18490 is to run higher ohms to bring the amps down and be able to provide 15w for a longer time. If it were me id be ohmed up to 2-2.4 ohms..

At 2.4 ohms you can run at 6v and actually get 15w with only a 2.5 amp draw. (Pro 2.5 limit)

In comparison trying to run 1.3 at 4.5v is 15w with a 3.5 amp draw. (Pro 3.5 limit) Same power output with a much higher battery draw.

Ohms and amps are the solution if you want to get maximum battery performance from your provari.

The older model provari's can pretty weak on power if your going over the 10w range... What amp limit do you have? Which provari model do you have?? 2.5,3.5, ect.

 

[Garemlin]

I'm just gonna add a thought here...

While the batteries sound shot at this point..

A lot of the problem may be running a 1.3 ohm at 4.5v is 3.5amps. Provaris range from 2.5 to 3.5 amp limit depending on which version you have. If your running at the amp limit it will wear the battery down fast. The higher the amp draw the faster a battery will run out.. The real solution for 18490 is to run higher ohms to bring the amps down and be able to provide 15w for a longer time. If it were me id be ohmed up to 2-2.4 ohms..

At 2.4 ohms you can run at 6v and actually get 15w with only a 2.5 amp draw. (Pro 2.5 limit)

In comparison trying to run 1.3 at 4.5v is 15w with a 3.5 amp draw. (Pro 3.5 limit) Same power output with a much higher battery draw.

Ohms and amps are the solution if you want to get maximum battery performance from your provari.

The older model provari's can pretty weak on power if your going over the 10w range... What amp limit do you have? Which provari model do you have?? 2.5,3.5, ect.

Valid point that I never even thought about. Could explain alot. I imagine I am getting to the top of the threshold limits of mine. Looks like it may not fit my vaping style anymore.

V2.5 BTW

 

[JeremyR]

I think your right.. The amp limitations are something that's regularly overlooked. On a pro v1 regardless what anyone says the max amp limit is 2.5 amps.. If you run even a 1.5 ohm you will be limited to 9.38w and 3.75v no matter what you try to set it at above that.

May be slightly higher power with a fresh battery for a few puffs, but will fade quickly to the average.. Your still amp limited above all.if

 

[Garemlin]

I think your right.. The amp limitations are something that's regularly overlooked. On a pro 2.5 regardless what anyone says the average amp limit is 2.5 amps.. If you run even a 1.5 ohm you will be limited to 9.38w and 3.75v no matter what you try to set it at above that.

May be slightly higher power with a fresh battery for a few puffs, but will fade quickly to the average.. Your still amp limited above all.

The amp limit on the P3 is 5.5a correct??? Might be time to upgrade. I'm just so used to building my coils in the range I do for my Vaporshark.

 

[JeremyR]

Hey sorry the last post is concerning v1... V2 steps to 3.5 amps but still the battery has to supply enough voltage and hold enough amperage for it to produce at the upper range of the power as the battery voltage reduces. So your 18490 is no longer able to provide enough amperage for the boost chip to boost the voltage enough.

You may be interested in this link showing how v1 & v2 work - http://www.provape.com/v/images/ProVariV1vsV2.pdf

The version 3.5 does step to 5.5 amps. But realize a battery has to be able to deliver enough for the boost converter to work. The result at higher amps with the single battery at a given size is that it runs down multitudes faster...
Side note- thats the reason I will only use a stacked or series configuration regulated mod anymore. It more than triples the battery run time at holding higher currents compared to a single battery. (Stacked zmax v3)

 

[Baditude]

At about half their expectancy they can start to have a lower run time. With some factors contributing.

One for you is you're probably pushing them to the max, which will prematurely wear them out. 18650 have a higher amp rating.

AW IMR
18650 2000mah 10Amp (older)
18650 2200mah 20A (new)
18650 1600mah 24A

18490 1100mah 16.5A (older)
18490 1200mah 18A (new)

18350 ​700mah 6A (old)
18350 8oomah 12A (new)

_______________________________________________​

I'm still using some over 2 year old AW 18650 IMR batteries in my Provari. Not like new, but still gets me almost through the day.

_______________________________________________​

Question for the Tech Engineers at Provape

 

[jwbnyc]

Hey Bad!

10char