How much current a battery cell can provide?

Thread Starter

Kelvin Lee

Joined Oct 22, 2018
111
Dear Sir/Madam,

It may be a very simple question to some expert but always having the same question to a beginner.

As there are many brands of the battery cell in the market, if we purchase a 1.5V AA cell for example Energizer, Panasonic, GP, etc, how much of current the cell can be provided? Is there any difference between the different brands? Compare with some rechargeable cell, will it different?

Best regards,

Kelvin.
 

Reloadron

Joined Jan 15, 2015
7,501
Quality batteries have data sheets. Just as an example since you mention an AA 1.5 volt Energizer here is the data sheet. Panosonic Alkaline Batteries: 1.5V Batteries can be seen here. All reputable battery manufacturers provide a data sheet for their products. You choose a battery for an intended application by reviewing the published data. The difference between brands will be reflected in the data sheets along with the battery chemistry.

Ron
 

Thread Starter

Kelvin Lee

Joined Oct 22, 2018
111
Quality batteries have data sheets. Just as an example since you mention an AA 1.5 volt Energizer here is the data sheet. Panosonic Alkaline Batteries: 1.5V Batteries can be seen here. All reputable battery manufacturers provide a data sheet for their products. You choose a battery for an intended application by reviewing the published data. The difference between brands will be reflected in the data sheets along with the battery chemistry.

Ron
Thanks, Ron, when we design a circuit with a resistor, we don't know what kind of battery the customer will use, how can we calculate the resistance we should select or just estimate?
 

MrChips

Joined Oct 2, 2009
30,706
Dear Sir/Madam,

It may be a very simple question to some expert but always having the same question to a beginner.

As there are many brands of the battery cell in the market, if we purchase a 1.5V AA cell for example Energizer, Panasonic, GP, etc, how much of current the cell can be provided? Is there any difference between the different brands? Compare with some rechargeable cell, will it different?

Best regards,

Kelvin.
You are asking the wrong question.
Your question ought to be: "How many mAh can the cell supply?"

And the answer is: " You will have to test a sampling of cells from each manufacturer at different current levels".
A nominal range is 500mAh to 2000mAh.

Reference:
https://en.wikipedia.org/wiki/AA_battery
 

Reloadron

Joined Jan 15, 2015
7,501
Thanks, Ron, when we design a circuit with a resistor, we don't know what kind of battery the customer will use, how can we calculate the resistance we should select or just estimate?
Without the details, as crutschow mentions, you can only use a generic number. For example a typical Zinc–Carbon battery life expectancy or a typical Alkaline battery life expectancy for a given load. This does not even include NiMh chemistry batteries.

Ron
 

Thread Starter

Kelvin Lee

Joined Oct 22, 2018
111
What resistance?
Need more info to answer that question.
Sorry for my unclear question, I mean the resistance value of the resistor we should use. For example, when we want to light up the LED, it is better to have the resistor, is the current output from a battery different then we need to have a different resistance value of resistor?

Or I make some unclear concept to the current? How much current will be outputted depends on the component we use but not related to the power source?
 

crutschow

Joined Mar 14, 2008
34,280
when we want to light up the LED, it is better to have the resistor, is the current output from a battery different then we need to have a different resistance value of resistor?
It's the voltage output of the battery that determines the resistor value for a given LED current.

The ampere-hour (Ah) rating of the battery determines how long the battery can provide a given load current.

Thus an AA alkaline battery has the same voltage as an AAA alkaline but has a higher Ah rating, so each would require the same resistance for a given current, but the AA would power that given load for a longer time period.
 

Bordodynov

Joined May 20, 2015
3,177
In order to set the current through the LED, a voltage greater than the operating voltage of the LED is necessary. The value of the resistor is considered according to Ohm’s law. To turn on the red LED, two consecutive galvanic cells AA are sufficient. One galvanic cell can be used in conjunction with a circuit providing the desired current and voltage of the LED. For a blue or white LED, three consecutive galvanic AA cells are required.
 

Audioguru

Joined Dec 20, 2007
11,248
Are you overloading some typical AA battery cells with a high current LED? To provide the high current you must used name brand C or D size cells. If the customer uses cheap Chinese "super heavy duty" cells then that is the customer's problem, not your problem.
 
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