10 amp battery life

[Dzaw]

I am running about 0.55-0.6 ohms on almost everything I build these days. I stay satisfied with my batts down to about 3.5V when measured by themselves (not under load). Between 3.6-3.5 ish volts, I will start to notice the performance decrease, and by 3.4 I'm feeling the need for a new batt.

Since VTC5 just isn't available, and I have little to no interest in a new device (thus nixing 26650 or dual batt configs) I'm looking for the best capacity between 4.2-3.5, with discharge rates of 5 and 10 amps being relevant.

I have the field narrowed down to 18650PF from Panasonic, or the 25R from Samsung.

I know that the labeled capacity for the Panasonic is higher, at 2900 mAh, but that label doesn't directly translate to my application.

Thus, I am wondering if anyone has direct experience with both of these, and if so, is there a notable difference in capacity. My current stable of batteries is starting to show their age, and I want to make the right replacement decision.

 

[edyle]

just saw a post a little while ago where xtar is claiming to make a battery that performs the same or better than the vtc's

http://www.e-cigarette-forum.com/forum/apv-discussion/667163-18650-batteries.html

 

[tj99959]

just saw a post a little while ago where xtar is claiming to make a battery that performs the same or better than the vtc's

http://www.e-cigarette-forum.com/forum/apv-discussion/667163-18650-batteries.html

I don't put much stock in "claims".

The 25r has a proven track record in the vaping community. It's just a good 20a all round battery.
I try to never exceed 50% of a batteries CDR, which is 10a for the 25r. That allows for 0.42 ohms @ 4.2v.

 

[Topwater Elvis]

just saw a post a little while ago where xtar is claiming to make a battery that performs the same or better than the vtc's

http://www.e-cigarette-forum.com/forum/apv-discussion/667163-18650-batteries.html

I requested spec sheets three times,
first time was a reprint of their advertizement with a ' garenteee this battery work good ' 'we only make best battery'.
Second one was missing actual testing curve charts & temperature range while testing at specific loads, and a note saying ' our battery much better than sony and any other ' and ' made extra special for you use '
My third request was detailed to avoid run around / confusion, sent 3 pages of complete non sense and a curve chart identical to a well know 20a battery.

Maybe someone else will have better luck, for me, no thanks.

 

[Baditude]

I am running about 0.55-0.6 ohms on almost everything I build these days.

Since VTC5 just isn't available, and I have little to no interest in a new device (thus nixing 26650 or dual batt configs) I'm looking for the best capacity between 4.2-3.5, with discharge rates of 5 and 10 amps being relevant.

I have the field narrowed down to 18650PF from Panasonic, or the 25R from Samsung.

I know that the labeled capacity for the Panasonic is higher, at 2900 mAh, but that label doesn't directly translate to my application.

Thus, I am wondering if anyone has direct experience with both of these, and if so, is there a notable difference in capacity. My current stable of batteries is starting to show their age, and I want to make the right replacement decision.

Since you are consistantly running 0.55 - 0.6 ohms, I highly recommend a battery with more than just 10 amps continuous. You're right at the cutoff line for a 10 amp battery, with no safety headroom factored in. You're pushing a 10 amp battery way too hard. The Panasonic 18650PF 2900mah is only a 10 amp battery and not well suited for sub-ohms. The Samsung 1865025R is a 20 amp continous battery, and better suited for sub-ohm usage.

When sub-ohming, amps (max. continuous discharge rate) are more important than capacity (mAh). Mah ratings are estimated for low drain applications such as a flashlight. With high drain applications such as an advanced personal vaporizer/subohm coils or power tools you can throw those estimates right out the window.


I suggest the following:

AW 18650 2200mah 20Amps

LG 18650HE2 2500mah 20A

Orbtronic 18650 2500mAh 21A
Orbtronic 18650 SX30 2100mAh ​30A

Samsung hybrid (LiNiCoMnP) INR18650-25R 2500mAh 20A

Sony hybrid 18650VTC4 2100mAh 30A
Sony hybrid 18650VTC5 2600mAh 30A Final word on Sony's production plans for the US18650 VTC4 and the US18650 VTC5 (April 9, 2015)

Battery Basics for Mods

Deeper Understanding of Mod Batteries

Explain to the Noob: Ohm's Law calculators

 

[lamarrk]

Take Baditude's advice and get a higher Amp battery. You might need it in the future and it'll save some aggravation if you do. Better to be safe than sorry, and the extra amps will make it a safer choice.