Need a little battery advice for VW mod

[BrushyHillGuide]

I'm looking for some 18650 batteries that will last longer, if possible, in my wife's IPV2S, if possible. She's vaping at around 18 watts (20 watts at most) with a iLeaf Lemo and about a 1-1.2 ohm build on top. She does get pretty good battery life with whatever (Efest, AW IMR, VTC5, etc) we put in there but I still get called upon to change the battery more than I like. Lol! So, I'm wanting clarification what I need to be looking at, in terms of battery specs, to get her something that'll last as long as possible? I'm assuming (a dangerous thing, LOL!) that all I need to be looking at is the Mah rating; and that the highest Mah (2900, I think) would work just fine? Or is there more to consider when looking for battery life in a VW device?

Still learning all the battery stuff, so please excuse the newb question.

 

[moorejr300]

Panasonic has a 3400 rated at 6.4amps though personally I would stay at a 20 amp battery just in case the ipv2 does anything weird mine has started misreading ohms by up to .8 off

 

[KenD]

Panasonic has a 3400 rated at 6.4amps though personally I would stay at a 20 amp battery just in case the ipv2 does anything weird mine has started misreading ohms by up to .8 off

Not high drain, not safe chemistry

 

[BrushyHillGuide]

So, I was right? I should be looking for a higher Mah rating to extend battery life? I'm still going to stick with 30A safe chemistry batteries, no matter what. Just wondering if there were any other factors that went into determining battery life when vaping a setup like I mentioned in the OP.

 

[JeremyR]

You won't find many high mah rated batteries over 15amps. There are a few new one though don't recall them at this time.

The other factor that will impact run time is the ohms of the coil. 1.2 at 18w is a 3.87 amp draw on the battery. A 1.8 ohm coil at 18w is 3.1 amp draw. 3.1 amp drain is less so the battery will last ~ 20% longer.

In the future I would look for devices than take stacked 18350 imr like sigelie zmax / vamo ;or even stacked 18650 like the sigelie 100w.

The zmax in stacked configuration runs me 3 times longer than a single 18650. Comparing usable run time without significant fade. The zmax v3/v5 can do up to 24w in voltage mode when stacked 18350s are used properly. I run it at 20-24w and vape pretty heavily. One set of stacked batteries last me a full day where as a single 2000mah 18650 would be 3 batteries for a full day due to noticable voltage loss when they get on the lower end.