Is My Battery Calculation Correct? + Questions

I am looking for a dual 21700 mod. The available ones, I probably will buy but, there aren't many to choose from. There are several single 21700 mods. My question is how long (on average) will a single battery mod charge last (I know this question is subjective). I vape around 65 watts, most of the ones I have seen online are rated 100 watts. I do not want to leave home and my mod die out because it was a single battery mod. I know I could carry a spare charged battery around, I just do not want to have to. Thanks  

I ordered a SXmini SL class with the sx485j chip and it recommends a 35a battery. I only use .15ohm coils at 60 watts so I should be good with a samsung 18650-35E right? Going to buy 21700 batteries once these start losing their charge because I just got them recently..  

I've been using only twin-18650 mods for some time, and before the shipping ban came into effect, I bought a backup of my most-used mod (a Geekvape Aegis X), but since the 100W single 21700 / 18650 Voopoo Drag X Plus was only $35, I also picked up one of them as another backup.

I vape exclusively on RDA's, typically with a 3mm dual coil twisted build with 24 or 26 gauge Kanthal or nichrome-80. 5 or 6 wraps with 24 gauge, 6-8 wraps with 26 gauge. I typically vape these between 90 and 110 watts.

I did not expect to get a 'true' 90-100 watts out of the Drag X, so I set a target of around 60 watts. I mounted a 3mm dual coil twisted 28 gauge build with 6 wraps, which on my Aegis X vapes great at 60 watts, and very good at 50 watts. It measures at 0.45 ohms.

But on the Drag at 60 watts, it only vapes at what feels like 30 watts on my Aegis. Setting it higher makes no difference either, it seems to 'top out' at ~30 watts regardless of the setting. 60 watts @ 0.45 ohms is only around 11 amps, so I doubt I'm hitting an amperage limit.

I am using 18650 batteries (VTC5A), and it is about time to replace them, as I am only getting around 70% the battery life as I did when new. I will be picking up some 21700 batteries at the same time, which hopefully help with things on the Voopoo.

Does anybody have any good experiences with ~60 watt builds on a Drag X Plus?  

I'm looking for internal battery box mods that has wattage option higher than 50 Watts. So far I've found Smok Xpro M80 Plus, which is an internal battery box mod with 80 Watts power at a great price. ($55) Is there any other internal battery box mods? MVP and Istick serieses are of course excluded here.  

Hi

I'm using Samsung 21700 T40 batteries.
Trying to figure out..
Is it best to charge a battery when it's discharged or nearly discharged?

I like to keep things simple with a routine of charging once a day, but then the battery will be set to charge even when there's 15-30% power left.

Is that bad for the battery?  

I got a problem with my Luxotic Surface. I'm using a LG Choco Battery 18650, it was fully charged and when I press the fire button suddenly it appears for Battery Low even the battery was on fully charged. I tried my spare battery maybe its just a mistake putting a fully charge battery, but it was the same issue also with the spare battery. I tried the 2 batteries with my Geek Vape Aegis 100W to check whether my batteries are already broke but it works fine. I was vaping for my Luxotic Surface by 55.0 Wattage, 0.21 ohms, 3.40 Voltage. Can someone help me out to fix this problem?  

Hi
I'm usually vaping at just 14 watt (mouth to lung, nothing heavy).

Now I'm soon getting a new mod that takes 21700 batteries, so I'm searching for the best batteries without spending too much or too little.
(aiming for Samsung, LG or Sony, to be safe)

I see some batteries hold 5000 mah, like the Samsung 50E (cyan).
But it only has about 10 amp discharge rate.
So less than half than "regular" 4000 mah batteries for example.

Is 10 amp more than enough for vaping at just 14 watts, or should I find a more "high-drain" battery?
I want to be safe and avoid risks or heat.  

Hi, I just got the 8 in 1 pirate coil kit with 8 different sets of coils, I'm trying in a nonmechanical mod with the DejaVu RDA with a dual 0.45 Fused Clapton Coils, and I need help calculating at which wattage should I vape for Maximum Flavor.

Thanks for the help  

So I have (2) 3100mAh Efest batteries rated @ 20A and (1) 2500mAh Efest batterie rated @ 35A. I'm experiencing a pretty annoying problem with all 3 of them and that is they aren't lasting nearly as long as I feel they should be. I can EASILY vape through a battery in less than one hour while heavy vaping. I'm aware that I am sub-ohming and that requires more power from the battery but these are just going way too fast and something isn't right. I have a BEC Pro mod that takes a single 18650 battery and I'm vaping an Aspire Atlantis tank @ 35 watts with the .5 ohm coil installed. I charge each battery fully with a Nitecore i2 before using them and it'll say 4.2V on my mod & on my Smart BEC app it will say 100% as I take my first few puffs but then starts draining at a ridiculous rate until they are dead. I am not aware what the mod efficiency is on my BEC Pro or if there might be something not working properly within my device. Can someone please help me find what's wrong with these? Maybe some of you have eperienced this problem with Efest batteries in the past? Thanks in advance!

Edit: These are genuine Efest batteries as I bought them straight from the manufacture on Ebay.  

Hello All,

Does anyone know which 18650 battery would last the longest when vaping at 13 watts? I have listed some below but any not listed recommendations are welcome as well.
(PS please don't respond with battery safety information or suggestions for me to look at mooch ratings)
Also, does anyone know if the vendors in the last 3 below links are reliable?

Thanks!

Sanyo NCR18650GA 3500mAh 10A

AW Protected 18650 3400 mAh

Samsung 35E 18650 3500mAh 8A Battery - INR18650-35E

Sony VC7 18650 Unprotected Li-ion Battery

18650 Battery 3500mAh Protected Li-ion 3.7V Rechargeable Orbtronic 10A Dual Protection (Panasonic-Sanyo inside) ORB3500P For High Performance Flashlights