MYTHS and FACTS about Batteries + mods (TAKE 2)

[mnealtx]

The charge and discharge current of a battery is measured in C-rate. Most portable batteries are rated at 1C. This means that a 1000mAh battery would provide 1000mA for one hour if discharged at 1C rate. The same battery discharged at 0.5C would provide 500mA for two hours. At 2C, the 1000mAh battery would deliver 2000mA for 30 minutes. 1C is often referred to as a one-hour discharge; a 0.5C would be a two-hour, and a 0.1C a 10-hour discharge.

C-rating does NOT affect the amperage provided by a battery...it only gives an idea for HOW LONG a battery will provide a specified amperage.

 

[Lucacri]

mnealtx, so how do you determine a "maximum" output in amps for a battery?
I mean, I really doubt you can ask 100amps at 3.7volts (even for a second) to a portable battery.

 

[mnealtx]

The internal structure of the battery determines the maximum discharge rate that the battery can handle without damage - that is the 'C rating' that's being discussed when people are talking about a "2C" battery - it means it's designed to provide a stable discharge at a 2C rate.

For our 200mah e-cig batteries, that's 400mah. Every time you take a hit and that atomizer kicks on, it's drawing something between 1.5a and 3a from the battery - that equates to a 7.5C - 15C discharge rate.

Now - unless you're going to claim that the CHINESE, world-reknowned for their LACK of quality control, are putting 20C batteries in our e-cigs, I stipulate that this side discussion about C ratings is a crock of ****.

So, let's get back to a *REAL* discussion, shall we, instead of this pointless drivel?

 

[Lucacri]

For sure they are not putting a 20C RATED battery inside, but the question now is (only for my better understanding):
any battery can output any amount of Amps?
I mean, if lets say we have a battery 2000Ah, 1C of discharge rate, and we plug a device that requires 100 A. What happens? the device will get 100A for a split of a second? Or the device will get only X amount of Amps? Or the battery explodes and so nobody is able to give us an answer because whoever tried died from the explosion?

 

[rmasu]

Hey Steve I want to correct you on one thing. mAh has a lot to do with it. Discharge rating x mAh is Amp output. Amp x Volt = Watts = heat. More amp avail = no voltage drop = more steady power

Yep I second that!
I have extensive knowledge with RC stuff (radio controlled)
A 11.2V 1000mah is not gonna power a car, heli etc the same as an 11.2V 3000mah. The voltage drop from the drain of the device will kill it instantly and create heat. Think of it like a little 4 cylinder blasting at 6k rpm and a big 12 cylinder car cruising at 2K and making the same HP both are creating the same power, but the smaller engine works a lot harder.
Bad analogy but you get the idea!

 

[bewzer]

i thought it went

x(y/turtle)+ z x apple = chicken


i may be wrong, but ive been in my intro to trig class for 12 consecutive semesters

 

[bewzer]

hmmmm or did it

=skateboard

i should have gone to class more often

 

[mnealtx]

For sure they are not putting a 20C RATED battery inside, but the question now is (only for my better understanding):
any battery can output any amount of Amps?
I mean, if lets say we have a battery 2000Ah, 1C of discharge rate, and we plug a device that requires 100 A. What happens? the device will get 100A for a split of a second? Or the device will get only X amount of Amps? Or the battery explodes and so nobody is able to give us an answer because whoever tried died from the explosion?

The device will get 100a for a very short time. The battery will most likely be destroyed, as well (thermal breakdown).

 

[framitz]

The horse has died.

 

[SmokinScott]

i thought it went

x(y/turtle)+ z x apple = chicken


i may be wrong, but ive been in my intro to trig class for 12 consecutive semesters

First belly laugh I've had all day!

 

[Ridewithme38]

Edit: Nevermind...

 

[SuperChicken]

I thought I heard a call................SuperChicken Away!

i thought it went

x(y/turtle)+ z x apple = chicken


i may be wrong, but ive been in my intro to trig class for 12 consecutive semesters