Need more battery run time

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Ryedan

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Need a new battery for my Cloupor DNA 30. I've been using vct5s but would like longer battery life and I probably don't need a 30 amp battery on a regulated mod eh?
. Saw somewhere about some 3400 mah Samsungs that looked perfect.
Could anyone link me to REAL ones at a decent price?
Thanks in advance all!

The DNA30 needs 12 amps input max which means a 10A battery is not enough. That generally gets you into the 20A batteries. You can use any IMR or hybrid that puts out enough amps. I agree with AzPlumber that the 3000 mAh and up batteries are likely not going to have the amp output you need and might be ICR which you do not want for safety.

Panasonic NCR18650B are 3400 mAh and 6.8A.
Panasonic NCR18650A are 3100 mAh and 6.8A.
Panasonic NCR18650PD are 2900 mAh and 10 amp.
Panasonic NCR18650PF are 2900 mAh and 10 amp.
Samsung ICR18650-30A are 3000 mAh and 6A.

LG HE2 are 2500 mAh and 20A.
Samsung 25R are 2500 mAh and 20A.
Sony VTC4 are 2100 mAh and 30A.

I believe Samsung does have a 3400 mAh battery but I doubt it will give you enough amps. What batteries are you using now?
 

mberlinger3

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The DNA30 needs 12 amps input max which means a 10A battery is not enough. That generally gets you into the 20A batteries. You can use any IMR or hybrid that puts out enough amps. I agree with AzPlumber that the 3000 mAh and up batteries are likely not going to have the amp output you need and might be ICR which you do not want for safety.

Panasonic NCR18650B are 3400 mAh and 6.8A.
Panasonic NCR18650A are 3100 mAh and 6.8A.
Panasonic NCR18650PD are 2900 mAh and 10 amp.
Panasonic NCR18650PF are 2900 mAh and 10 amp.
Samsung ICR18650-30A are 3000 mAh and 6A.

LG HE2 are 2500 mAh and 20A.
Samsung 25R are 2500 mAh and 20A.
Sony VTC4 are 2100 mAh and 30A.

I believe Samsung does have a 3400 mAh battery but I doubt it will give you enough amps. What batteries are you using now?

Those are constant draws. From my understanding (limited at that) the regulator doesnt pull a continuous draw but a pulse draw. The pulse draw from some of the one you quoted at 10A are actually 18.
 

anumber1

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I'm running Sony vct5's (supposedly lol).

What about these? 18650 Efest Purple IMR18650 V1 3100mAh High Discharge Flat Top
Although efest states 20A for that battery, the 20A rating is a pulse rating.

Efest uses the Panasonic NCR18650BE cell, a 10A max continuous discharge battery.

Also, you should take into consideration that Panasonic figures the mAh rating by discharging the cell to 2.5v. The Evolv DNA30 chip will cut off at around 3.2v.

The Panasonic batteries put out a significant portion of their rated mAh below 3.2v. A full 40% of the rated mAh of a Panasonic NCR18650BE is produced below 3.2v. This means in use, most of the rated capacity will not be realized before the mod cuts off for low battery voltage.

The Samsung INR18650-25R works as well as the Sony US18650VTC5 in my experience with the Evolv DNA30D board.

The LG 18650HE2 works satisfactorily as well.

Unfortunately, using the higher mAh rated, 10A panasonic batteries will not yeild longer runtime with the DNA30D based mods.
 
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AzPlumber

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Those are constant draws. From my understanding (limited at that) the regulator doesnt pull a continuous draw but a pulse draw. The pulse draw from some of the one you quoted at 10A are actually 18.

There are absolutely zero guidelines available from manufacturers on using pulse rating for a li-ion battery. Any use beyond continuous amp rating is foolish. The continuous amp rating on a battery is based on the batteries max. ability to safely migrate lithium ion from the anode to the cathode. Any current drawn above the max cont. amps has to rely on readily available lithium ions. After a high amp pulse the cell needs down time to recover. It's just foolish to put something up to your face and push the button without knowing the cycle time for high amp pulse.
 

Ryedan

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Those are constant draws. From my understanding (limited at that) the regulator doesn't pull a continuous draw but a pulse draw. The pulse draw from some of the one you quoted at 10A are actually 18.

If you look at the DNA30 spec sheet I linked to in post #3, you'll see the maximum input amp spec is 12A. I consider that value to be continuous amp draw.

Published battery pulse specs range typically from 1 - 60 seconds. Unless we are told what time interval the pulse spec is for, they are pretty useless. Typically, the pulse specs that I have seen are for 30 seconds, but not always. IMO the typical pulses that we see in regulated vaping from 33 Hz up to 800 Hz can be considered from the battery's perspective the same as the associated RMS draw value.

Now, I'm not a battery engineer and my opinions are all from what I've picked up the last couple of years I've been vaping. If you or anyone else can shed some more light on this stuff, I would be very happy to learn more :thumb:
 
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