battery life of the eleaf istick 50w, what what!

[jollyme]

my fellow vaperooossss!

me again!

i hope you could answer me my question about my istick.
again i was shocked and sadden yesterday night because my battery died only after a day.


It was my first day with it yesterday and i fully charged it in the night.
I had my protank mini 3 on it with 1.5ohm at 12w and i sucked about 3ml of juice in about 4 hours.
then in the afternoon i got my shippemnt of new juices where i decided to fire up my kanger subtank (why only with the new juices u ask: because i needed a very low nicotine level to sub with).


so I fired it with my .5 ohm between 15 and 20w and sucked about 10ml of juices over the period of the day when it died around midnight last night.


Is that normal or is it defective?

i was under the impression per the reviews that charge could last 3 days. I don't think i vaped that much with it.
Its full charged again today and i'm hoping for the best!

if someone can tell me if that is normal as i don't know math and battery life per wattage if that makes any sense.

thanks
angele

ps i never turned it one or off again. always left on, again under the impression that it only sucks power when i vape?

 

[Sona Buvelle]

in my experience with the Istick 50watt i run at .3-.5 ohms and my watts are higher then yours about 30-40 and it lasts me about 10 hours of vaping.

I also never turn mine off, i believe it uses very minimal power and only when the screen is lit up to send pulses for resistance.

Not sure this is helpful just sharing what i get out of mine so you can compare.

 

[Baditude]

When using normal resistance coils (1.0 - 3.0 ohms), you can expect the battery life to last as long as the mAh rating suggests. For example, 100 mAh is roughly equal to 1 hour battery time. A 2000 mAh battery should last about 20 hours use.

When sub-ohming, or using any rebuildable really, expect the battery time to be far less, as many more amps are being pulled from the battery. The lower the resistance of the coil, the more power is drained from the battery:

1.0 ohm = 4.2 amp draw
0.9 ohm = 4.6 amp draw
0.8 ohm = 5.2 amp draw
0.7 ohms = 6 amp draw
0.6 ohms = 7 amp draw
0.5 ohms = 8.4 amp draw
0.4 ohms = 10.5 amp draw
0.3 ohms = 14.0 amp draw
0.2 ohms = 21.0 amp draw
0.1 ohms = 42.0 amp draw
0.0 ohms = dead short = battery goes into thermal runaway

 

[tj99959]

A battery charge in an iStick 50 lasts 4400mAh. The way you choose to use those 4400mAh is totally up to you.
After using mine for about a month I can tell you that mine lasts.
. with a 3 ohm carto 4-5 days
. with a 1.25 ohm kayfun ~3 days
. with a 0.4 ohm RDA 1+ days

The difference is caused by the amperage draw & wattage setting.
In simplistic terms, if your new topper pulls 10 times the amps, you can expect 1/10 the battery life.

 

[Mogar]

13 mil of juice? sounds about right. I run around 16 mil through mine before the battery needs to be recharged. (subtank 0.6 res at 20w )

 

[ImThatGuy]

There's a lot of factors that comes to play when it comes to the need to recharge: how many puffs taken, length of draws per puff, amp draw etc. Everyone is different.

 

[Jdurand]

As a rule I get 1 full day out of the 30 and almost two full days out of the 50. using a Lemo @ 1.1 Ohms firing around 20 watts.

 

[Completely Average]

mAh = Milli-amp hours. 1000 milli-amp is 1amp per hour. So the 4400mAh iStick 50W has 4.4 hours worth of charge at 1 amp per hour rate of drain.


Now, you were running a .5ohm coil at 20 watts. That's a power draw of 6.32 amps. That works out to about 22 minutes worth of power if you held the firing button down the entire time. Also you ran a 1.5ohm coil at 12 watts which is a 2.83 amp draw. Figure the two combined resulted in around 25 minutes worth of power from the full battery charge.

Now, you sucked down around 13ml of juice in total. That's a TON of juice to be vaping in a single day so clearly you were using this thing a lot. Let's say you're taking an average of a 7 second draw for each puff of your ecig, which seems likely if you're going through that much juice that fast. That works out to about 215 puffs in total from the 25 minute charge. If you were awake and vaping for 15 hours that works out to just 14.3 puffs per hour. Even at only a 5 second draw for each puff you're looking at 20 puffs per hour to drain the battery in a single day.

Considering the amount of liquid you went through, I would say this is normal. My math isn't absolutely precise, but it's close enough to be in the ballpark range. Somewhere around 20 puffs per hour with those coils at that wattage would be enough to drain the battery in a single day.

 

[jseah]

One thing you also want to keep in mind is that with new batteries, it generally takes about 3-5 charge/discharge cycles to "break in" the battery. During this time, your battery life may not be as good. Also, it is not good to totally discharge lithium batteries until they are totally dead. It can damage the battery and reduce its useful life. This is why the iSticks are designed so that they will shut down if the battery level drops below 10 percent.

 

[jollyme]

wow once again i'm blown away by the responses.
it all makes sense i'm happy that i didn't get a dud or something...
so much knowledge running through this site...

grateful and thank you again.
super great answers...

didn't think 13ml of juice was that much...lol
xoxo angele

 

[Jdurand]

wow once again i'm blown away by the responses.
it all makes sense i'm happy that i didn't get a dud or something...
so much knowledge running through this site...

grateful and thank you again.
super great answers...

didn't think 13ml of juice was that much...lol
xoxo angele

13 mil is 2.5 days worth for me, so again it seems the math works out for charge time.

 

[newfievap]

What's the total charge time from being dead? 4hours?

 

[KattMamma]

One thing you also want to keep in mind is that with new batteries, it generally takes about 3-5 charge/discharge cycles to "break in" the battery. During this time, your battery life may not be as good. Also, it is not good to totally discharge lithium batteries until they are totally dead. It can damage the battery and reduce its useful life. This is why the iSticks are designed so that they will shut down if the battery level drops below 10 percent.

THIS.

I didn't know this and was disappointed with the battery life of my 50w at first. It got better.

 

[TheotherSteveS]

THIS.

I didn't know this and was disappointed with the battery life of my 50w at first. It got better.

Electrochemistry is a wonderful thing!! Lol!

 

[DaveP]

I had the same experience. When I bought it it was charged almost completely. I vaped from lunchtime until later into the evening. I charged it completely and let it sit overnight before vaping again. It lasted from morning until late night before the battery died. After several charges I was still going at bedtime.

It's still not a bad idea to charge it daily even if it hasn't died. The LiPo (lithium-polymer) batteries the iStick 50W uses are more forgiving, but it's still best to keep them topped off. I'd charge it daily even if it reads half full. I don't like to start the day with a half charged batt. I might get stuck away from home.

The up side is that there's usually a USB port available that you can use. Buy a cigar lighter USB adapter for backup. You can still vape in your car while it's charging.

 

[jseah]

What's the total charge time from being dead? 4hours?

I believe the instruction manual says 5 hours. That sounds about right for a 4400 mah battery.

 

[jseah]

THIS.

I didn't know this and was disappointed with the battery life of my 50w at first. It got better.

I knew this for years from the lithium batteries in cell phones. Whenever I got a new cell phone, the battery life sucked for the first three days or so (recharging every night). Of course, after a couple of years of recharging every night, the battery starts to hold less and less of a charge. That's one of the downsides of having a mod with built in batteries, knowing that eventually the batteries will reach the end of its useful life. However, considering that the mod only runs about $50 or $60, it is basically a disposable item. Now if I'm going to spend $200 for a SX Mini or a Vapor Shark, then I would want replaceable batteries, which they do have.