Tech By Draugmor

KR808 vs. 510  12-07-2011

In order to do a fair comparison I selected the top of the line batteries from 3 well-known Resellers. For the non-regulated KR808D-1 battery I chose a V4L or Vapor4Life Diamond Series Short Battery (65mm) and for the regulated battery I selected a Bloog Short Battery (65mm). For a 510 model I chose a Joyetech 510 from Liberty Flights. Joyetech 510s are considered the benchmark that all other 510s are judged by. The reasoning behind my selections are due to the fact that each battery has around the same mAh (milliamps per hour) rating. Both the V4L Daimond Series Short Battery KR808 and Joyetech 510 claim ratings of 180 mAh, while the Bloog has a claimed rating of 220mah.

First we will touch upon is the differences in the draw. Those who prefer an airy draw similar to a regular size cigarette will lean towards a version 1 KR808. It's far more airy and more like using a regular cigarette. The 510 is far more reminiscent of using a 100, a tighter draw but not too stiff. The regulated KR808s have the stiffest draw of the bunch, even tighter than that of the 510. All things to keep in mind when choosing what e-cig mayberight for you.

Best Draw

V4L Diamond Shorty 65mm 

Bloog 65mm 

Joye 510 

Next up is average lowest possible run time. I happen to vape a lot. It's rare to ever see me without a PV in hand or hanging from a lanyard around my neck. There are those who can go a whole day with a single battery, but they are as rare as those who go through 12-14 batts a day. For testing purposes my focus is always on the least amount of time you'll get out of an e-cig. To accomplish this fair baseline for testing I need to use Cartomizers or Atomizers that were all within a shared ohms range. I decided to use a 2.4-2.6 Atomizer ohm rating for each. 

Each unit was tested through 10 full charging cycles, the minutes were noted and an average was taken.

Average Perfomance Longevity

Bloog 65mm (2.6ohm carto)  157 minutes

Joye 510 (2.5ohm atty) 144 minutes 

V4L Diamond Shorty (2.4ohm carto) 131 minutes

What we see here is the version 1 Bloog regulated battery beats both the 510 and Version 2 KR808 V4L unregulated battery. Run time makes up only one corner of the triangle to vaping nirvana, we've already covered the other with the airflow on the draw. The third just as important piece is voltage. Voltage will determine the final wattage of your vape (based on the cartomizer/atomizer ohms rating) which leads to vapor production potential and taste aspects of each juice (that's the juice triangle for vaping nirvana). Here's where those numbers get reversed.

Highest Voltage

V4L diamond shorty  4.20v 

Bloog 65mm  3.64v 

Joye 510   3.23v 

Now the difference on the 510 and version 1 Bloog battery is that they maintain the same voltage throughout the life of the charge because they're regulated. The V4L KR808D-1 batt does not, but they maintain a voltage over 3.9v longer than any other battery tested to date. The higher voltage simply translates into better flavor, throat hit, and vapor production.

For the best performing pen style e-cig on the market, a KR808D-1 is the best performing in sheer number data. Mind you I didn't mention the Joye Ego (the 510 fat batt variant) because there comes into play a whole new item of battery life. For now let's compare oranges to oranges.

Next week we'll visit the world of Ohms, Amps, and Watts to see what those numbers really mean to a Vaper. 

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Voltage and Vaping 12-16-201 

Wattage and what it means to a Vaper…

Last week we looked at the basic differences of Top 3 most popular slim batteries currently on the market. This week we're going to explore a little deeper into the hardware aspects of the Vaping Triangle. We're going to look at Voltage and how it translates to everyday vaping.

The first and perhaps most important relationship between current, voltage, and resistance is called Ohm's Law, discovered by Georg Simon Ohm. Ohm’s Law is a series of equations which are used in the fields of electronic and electrical engineering.

Generally once a conversation begins with amps, ohms, voltages or watts many folks just shrug their shoulders and walk away. Yet there are only really 4 simple equations that every Vaper should be familiar with. It is always easier to understand technical terms when they are explained in ways that we are most familiar with.

Let’s think of power in terms of your kitchen water faucet. Voltage is the amount of water available, resistance is how open or closed the valve is, and amperage is the rate at which the water flows. Wattage is the pressure at which the water comes out of the faucet. Milliamp hours is how long it will take for all the water to run out if it is flowing at a specific rate. The higher the Milliamp hours the slower it will take for all the water to run out.

Understanding the relationship between the Ohm Rating or the resistance of the Cartomizers or Atomizer and the Voltage of your PV device can save you both time and money.

By dividing the Volts by Resistance we can determine how many Amps or the measurable rate at which power is being distributed.

For example, let’s take a 5v Passthrough when used with a low resistance 2.2 ohm Cartomizer. The following equations apply:

  I =  V/R  (amps = volts divided by ohm)                                5V/2.2Ω  =  2.2727A

R = V/I   (ohms = volts divided by amps)                              5V/2.2727A = 2.2 Ω

    V = I x R (Volts = amps times ohms)                                     2.2727A x 2.2 Ω = 5V

      W = V x A (Watts = Volts times Amps)                                5V x 2.2727A = 11.36W

So at this point your reaction might be, “So….how does this information benefit me?” Because there are so many different Cartomizer/Atomizer Ohm combinations and so many different types of battery voltages, it can play a vital role when you go to make a purchase.

Let’s take a look at a very popular PV model the 510 Ego regulated battery. These batteries use a technology known as Pulse-Width Modulation which acts as a governor and simply maintains the same amount of voltage while in use.

Depending on the maker the 510 Ego voltages can vary between 3.2v-3.4v. The Joyetech 510 Ego battery measures between 3.18-3.24v under load. “Under load” means while the battery is connected to a Cartomizer or Atomizer and is in use.

Their advantage is larger capacity batteries which are rated from 650mAh-1300mAh. Even a Variable Volt 510 Ego battery still only produces 3.7v under load because of the P.W.M. 

The higher mAh rating does have one unique advantage in the amperage game or how long it will last between charges.

Every battery has a “C” rating. This rating tells you how many amps it can pull without damage. Lithium Ion batts have C ratings from 2-18 depending on their chemistry. A 650 mAh battery with a 2C rating can pull 1.3 amps for example. 

Joyetech 510 Batteries have a 4C rating, meaning a 650mAh battery can pull 2.6A of power. This allows you to use a very low resistance Atomizer or Cartomizer. A low resistance Cartomizer rated 1.5 ohm at 3.2v will pull 2.13A, which puts it at 6.8 watts.