Sadly every battery will have some internal resistance associated with it which will prevent you from drawing maximum current from the battery. The datasheet also provides a neat graph to understand the same.Īnother important parameter to consider while deciding your battery is the internal resistance of the battery.
However this figure will not be accurate due to the varying current and operating temperature of the system. So for our application which consumes only 20mA the battery should last for (240/20) 12 hours. This means that if we draw 240mA, then our battery will last for 1 hour and similarly if we draw 120mA then the battery will last for 2 hours. Then in that case the mAh capacity of our battery is 240mAh. But for the sake of simplicity let us assume that we power a normal load which consumes a constant current of 20mA at 20☌. The life time of the battery depends on the many parameters like operating temperature, discharge current, dynamic loads etc.
3V 2032 BATTERY PORTABLE
The CR2032 is a commonly used battery for portable electronics applications.
3V 2032 BATTERY HOW TO
How to calculate the run time of your CR2032 battery Lithium button or coin cell batteries are a bit costly than alkaline, but last longer, weigh less and have a wide operating temperature range.įor the Pulse Discharge and Continuous Discharge Characteristics check the attached CR2032 battery datasheet at the end of the page.
So, according to this 20mm is the diameter of CR2032 and 3.2mm is the thickness. The name defines the size of the battery like for CR2032, the first two digits stands for diameter and second for height or thickness in tenths of mm. Typically they are of compact size, 5-25mm in diameter and 1-6mm in height. Note: Complete technical information can be found in the CR2032 Datasheet linked at the bottom of this page.Ĭoin cell batteries like CR2032 are generally used for small portable electronics devices such as wrist watches, pocket calculators, automobile key less entry transmitter and hearing aids.
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