I thought 5v was 5v...?
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It depends on your USB port, and also if you used a 200ohm resister on the data wires(puts the usb port in charger mode).
I get 3 days of heavy vaping with (2) 14500 batteries in series. When batteries are fully charged I can only take about a 1 or 2 second draw before it gets hot, then it settles down and lasts a few days.
The only meaningful test for voltage is with a load applied. If you test the USB PT under load you'll find for most power sources, the voltage drops fairly dramatically due to insufficient current.
2x14500 in series last approx. 4-5 hours for an average vaper.
2x14500 in series last approx. 4-5 hours for an average vaper.
So are the current ratings that over estimated. Even general ballpark (v/r=c) puts me under 2 amps with a three ohm atty. Or am I missing something...I would like my pass through to hit like my mod.
Cut down the PT's wires and hard wire this power supply.
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Or if you want to be absolutely sure this one (it should run cooler).
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In series I`m getting a good day off mine. I vape 2 ml approximately a day. Take pretty near a 4 sec hit when I do vape as well. 
In series I`m getting a good day off mine. I vape 2 ml approximately a day. Take pretty near a 4 sec hit when I do vape as well.
Thats the problem with giving times as a rating as its completely subjective. 2x14500 in series has the same capactity as a single 14500 (real mah is about 750ish). If you use a simple regulator on it, all the excess power is wasted so its not a very efficient way to power your mod. Using a switching regulator is a much more efficient solution.
Sorry to borrow your thread OP~
I manage to only get my hands on 5V 5amp. << Does the amp effects the whole circuit?
Since the end of the day we are still dealing with Voltage and resistance in the atty? Will it affect the overall performance?
Electronic Noob here.. >.<
I manage to only get my hands on 5V 5amp. << Does the amp effects the whole circuit?
Since the end of the day we are still dealing with Voltage and resistance in the atty? Will it affect the overall performance?
Electronic Noob here.. >.<
Calculating efficiency can be very difficult between different regulation types , an LDO or analog regulator gets more efficient as the load across the regulator goes down ( I.E. less load is across the reg. and more is across the LOAD ) a boost circuit has better efficiency at higher voltages relative to the source voltage ( there are several other factors as well , capacitance , freq etc. )
An analog regulated setup uses the same amount of Power as a non regulated setup with the same load I.E. it will draw the same power , the only difference it that a regulator dumps the excess load across the regulator instead of the LOAD .
Boosted circuits work in a completely different way , they boost the voltage from a battery or source to a higher voltage , this requires the current to be lower to a degree OR the source needs to have a higher current capacity. They store the voltage and current in a capacitor in a pulsed PWM method ( Pulse Width Modulated ) it turns OFF and ON real fast. there are certain advantages to this design 1. it uses a lower voltage source ( like a single battery )
I hope this helps
Not all of the information provided here is guaranteed to be 100 % perfect but is a basic under standing of there designs and functions
Considering all of the variables that is a good indicator !
I have several sets of Ultrafire RCR123A 3.7 volters and they are tapering off , they dont last as long under the same conditions so they are aging now .
I have several sets of Ultrafire RCR123A 3.7 volters and they are tapering off , they dont last as long under the same conditions so they are aging now .
It looks like that has a 4.5 volt MIN. input voltage Nuck , nice package though !
If I'm understanding this correctly a regulator takes 2 series battries say 7.4v and takes it down to 5v, wasting power in the process. So with that understanding doesn't a switching regulator take series or parallel bats at 3.7v and increase the voltage to 5v?
And by the way it's good to see you posting here at the dreaded ECF. I know as a supplier you are limited and I thank you for your efforts.
It takes the same 2 bats in series but uses PWM to do the same thing as a linear regulator without all the waste. That unit operates at over 90% eff. at the voltages and current we typically use for ecigs.
It's meant for batteries in series. At 4.5v total, each bat is finished it's cycle.
Thanks for the info Nuck, I have a couple of those and after trying the 4050c booster with a 18650 bat and not getting enough power (1.63) to fire a lr510 attie, This was going to be my next step. I was hoping the 4050c would work and give me room for a juicer. I have to have a drip juicer, carts and cartos do not work for me. with the two bats in series, the mod will have to be bigger I guess. O well can't have it all.
Thanks again for sharing your knowledge.
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