VCT5'ers : A how long until........ question

[proax9]

For over a year now- I have using DIY mods using the TI4050 chip: running at 5v, and with 1.8 to 2.0 ohm RBAs. The mods use either 14500 or 18350 AW batts.
Why regulated? I cannot stand the drop off from the initial ~4.2 off the charger to 3.7v.. and then steadily weaker vapes.
Why smaller batteries: I like the small form factor of the mods. Granted, the 14500 or 18350 (700 mah) batts only last 3-4 hours typically- at least the mod puts out a steady 5v for those 3-4 hours.

The vct5s- I'd like to hear over what period of time these bigger mah batteries stay at the 4.0-4.2 volts. Do they drop to 3.7 as quickly as the 700 mah batts? (I know there are charts.... I like to hear from actual people using them.)
I'm thinking about a mech mod as I could always build the rba to lower ohms to get the same 'hit' as off the 5v regulated. But if the drop off is noticeable over the initial 3-4 hours- I may not be a happy vaper.

 

[JSRP]

I own two VTC5's and use them in my Brass Stingray which has a voltage drop of about 0.15.

When I use an RDA at about 0.5-0.8Ohm, I tend to find I can notice a drop at about 2-3 hours of vape time. With my Kayfun at 1.3Ohm however I can go about 5-6 hours before noticing a drop.

I got a mech purely for my rda, if you are like me and hate that drop off I would really stick to a regulated mod and get a dna20/dna30 device instead. The vapourshark dna30 is tiny if size a porblem for you

 

[proax9]

Thanks for the info......
Just spent time looking at the Vapor Shark DNA30- definitely looks nice! What I find odd is there is very little mention of it on the various threads. It actually seems to be a slightly smaller version of the Hana mod mini- same chip, same 1200 Lipo batt.
It's like a middle of the road option between the real Hana mini ($250), and the Cana (clones) at ~$60-$80).

 

[anumber1]

With my US18650VTC5's, when using my dripping setup (.52 ohms), the vtc5's drop quite quickly from 4.2v to 4v. Then they drop slower from 4.0 to 3.7 or so.

I get about 3 to 4 hrs of use before I really notice a drop in performance.

Once the Sony's get below 3.5 or so they drop off really quickly.

Since my .5 ohm dripper is operating over 30 watts most of the life of the battery, the drop in performance from 4v to 3.8 is pretty minimal. Below 3.6v or so I can tell quite a difference but still have pretty good performance. I have been surprised to find my batteries at 3.2v and still making fair vapor. I tend to swap batteries at the first sign of diminishing performance tho. I have half a dozen vtc5's so its no big deal to swap.

My Kayfun at 1.3 ohms goes 6 or 7 hours before I notice a drop in performance. The batteries are usually at 3.7v or so when I notice the drop.

 

[Kahuna Cowboy]

In comparison to EFest 35A and Orbtronic SX22's, the VC5's last a bit longer before I notice a taper off of voltage in the vape.

 

[JSRP]

Thanks for the info......
Just spent time looking at the Vapor Shark DNA30- definitely looks nice! What I find odd is there is very little mention of it on the various threads. It actually seems to be a slightly smaller version of the Hana mod mini- same chip, same 1200 Lipo batt.
It's like a middle of the road option between the real Hana mini ($250), and the Cana (clones) at ~$60-$80).

Would love to get a Vaporshark but I can't justify the price given the battery life. Iv'e got a few of those Cana Modz on the way from Elev8vape, according to the reviews iv'e seen they seem to be very very close the the legit Hana. When it comes I'll be able to compare it to the real DNA 30 board and see.