LR is harder on batteries.

[5cardstud]

I found this tutorial of why LR is harder on your batteries and thought it would be of interest to those that use LR and how it affects their batteries.

Internal resistance:

batteries sweat if you make them work too hard
A battery converts chemical energy into electrical energy. This conversion is caused by chemical reactions inside the battery. The quicker the battery has to provide energy, the quicker those chemical reactions have to happen.
If you make the battery work hard then some of the chemical energy is converted into electrical energy and some into heat energy. The heat energy makes the battery hot.
The harder you make the battery work, the more chemical energy is converted into heat energy and the hotter the battery gets.

How you can make a battery work hard:

If you make a battery run a single component that demands energy very quickly, like a very bright bulb, or lots of components in parallel then the battery has to work very hard because it has to supply energy very quickly.
Remember batteries are (or try to be) constant voltage providers. The current depends on the job they are doing. When they work hard they provide a big current. But as we'll see, if they provide a very big current then the voltage will drop.

Less electrical energy means lower voltage:

You can think of voltage as energy per charge.
If there is less electrical energy available (because some of the chemical energy ends up as heat in the battery) then the voltage across the terminals of the battery will drop. This means the voltage available to the circuit also drops.

The practical upshot of this is that if you make a battery supply a big current.

That's why your farther ahead and it's better on your batteries to raise the voltage instead of lowering the resistance.

If you would like to read it in it's entirety here is the link:
http://www.furryelephant.com/content...al-resistance/

 

[rockyroad]

Interesting as I'm trying to figure some of this stuff out down in the Super T forum. I see they make these stack-able 3.7 batteries now for 7.4 volt vaping, or that is what it appears to me as. Is this why they make the high resistance atty, for that combination? seems kinda radical but maybe not

 

[5cardstud]

Sorry that link don't work. This one does.Internal resistance - when it's negligible and when it isn't

 

[Higbe33]

I don't understand the bottom line here. Don't use LR atomizers or cartomizers because they will shorten battery life? How much shorter? It is great to have detailed information, however a 1.5 ohm dual coil cartomizer is just wonderful at 3.7v. And a regular cartomizer is fantastic at 5v. I have no knowledge of electrical stuff, but I think both those applications would be considered LR.

Most I've heard on the forum is; don't use LR stuff on batteries under 450 mAH. So lets say you are correct, which I'm sure you are, what is the trade-off? My 1100 mAH Riva should last, lets just say, one year, and with using LR cartomizers it will only last 10 months. That difference for me is worth the LR. Just my 2 cents.

Hig

 

[oldsoldier]

Higbe, the bottom line is that when you use LR attys/cartos your battery will need charging sooner than with a SR. It will also shorten the service life of the battery. In the end it is really just informational, many people willingly choose to use LR and accept that battery life is reduced.

5cardstud was explaining the underlying principles behind why raising voltage is more efficient than lowering resistance. Electrical stuff is really all about math (and a little chemistry on the side when you talk batteries).

 

[5cardstud]

I just got done doing tests on LRs. I ruined 3 sets of Trustfire Silver batteries that were my newest sets. It is chemically stressful to your batteries. You want to stress and buy more use them. I'm talking about HV mods. LRs were made for and should be used on 3.7 volt batteries like the 510, 808 etc. not on 5 volt mods.

 

[fsroq]

I just got done doing tests on LRs. I ruined 3 sets of Trustfire Silver batteries that were my newest sets. It is chemically stressful to your batteries. You want to stress and buy more use them. I'm talking about HV mods. LRs were made for and should be used on 3.7 volt batteries like the 510, 808 etc. not on 5 volt mods.

I am using a 2*14500 VV mod with protected trustfire "flames" now for 2 month. They never get warm, no isue at all. Probably their life span will be shorter, and I must admit that these 1.5 Ohm cartos are fired at 4 to 4.5 volts most of the time. Also, I am not a chaine vaper.