MVP going crazy?

[Dwhitt1981]

when I first got it I could get aroung 1000 + puffs. now its a few months old and 600 top. it doesnt matter if I run my t2, pro tank, stardust, or rsst. I can vape at 3.7 volts or 4.4 and still only 600 tops and it totally dead. any ideas? im lost cus 600 puffs nothing for a 2600 mah battery. or am I just asking to much. I mean my hits arent long. I dont evenvape the limit to the point of shutoff.

 

[AttyPops]

how many ohms are your coils?
How many times would you guess that you've recharged it?

 

[Windz1]

What's your atty resistance?
Lower resistance means higher discharge of the battery.

I have MVP, and it is still as strong as I first got it last Feb. I take it to it's limit (999 marker), and have never had issues.

 

[DavidOck]

BTW, 999 isn't it's limit, just where the puff counter rolls.

Mine still fine at 6 months, can roll it over, but usually try to charge (and reset counter) when I get into the 900's.

 

[Thunderball]

Yeah, you should have gotten WAY more than 1000 puffs when you first got it.. Mine is still god too, I'm guessing three months old or more

 

[Dwhitt1981]

attys are from 1.5 to 2.5 and the rsst was at 1.2 . I dont know but it has me wanting to send it back.

 

[CookingWithGuns]

Yeah, you should have gotten WAY more than 1000 puffs when you first got it.. Mine is still god too, I'm guessing three months old or more

This, on a 750 mah I can hit around 500ish. An MVP is what, 2600?

 

[AttyPops]

Watts = volts X volts / ohms. So if you vape a 1.5 ohm dual coil at 4.4 volts that's 12.9 watts. Drawing a lot of power. The 1.2 ohm could be even worse depending on voltage. Particularly if you've been cranking it up to power thicker coils (like 30 ga or 28 ga).

IDK its amp limits...but running it all the time at max amps may be wearing the battery faster. Also, recharging more frequently wears the battery out faster. Then there's electronic stress of the circuits.

So we'd need more specifics as to what you use for ohms at what volts. And even then, we're guessing. (well, I am anyway). Suggest you contact the vendor. How long is the warranty period?

 

[Dwhitt1981]

1.2 @ 3.7v, 1.5 -2.0@4-4.3v,and 2.5 @ 4.3 -4.5 v thats what I run them at lately

 

[AttyPops]

Well, it doesn't actually work out exactly like this, but for giggles, let's kick the amp hours discussion around for fun.

2600 mAh = 2.6 amp hours. AKA. 2.6 hours of run time at 1 amp drain.

1.2 ohms at 3.7v is 3.1 amps. So that's 3.1 x the drain rate of the above. Or 2.6/3.1 = .8387 hours = 50 minutes. Optimal.

50 minutes X 60 seconds = 3000 seconds. 3000 seconds /600 hits = 5 second hits IF IT WAS NEW. (You could also say 1000 3 second hits, etc.) But it's used so even if you take 2 or 3 second hits, you may only get the 600 vs the 1000+ you got when it was new.

That's a real rough calc. And doesn't count how the cut-off voltage works vs optimal nor allow for the greater drain of high amp applications vs mA applications effect on the results, nor does it account for device efficiency losses.

So yeah, if you take 4 or 5 second hits, or even if the battery is older now, it's going to be lower.

That's to be expected. Sorry. But when these non-swappable battery power supplies get older, they don't last as long. Same is true for swappable cells too, but you replace them for 5 or 10 bucks in swappable battery units.

I can tell my 2 month old cells are not optimal anymore.

Basically, you're pushing a lot of amps/watts with those coils.

Best guess.

(someone check my math!)