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# Battery Discharge Rates-Introduction, Calculation And Efficiency

Mar 03, 2021   Pageview：55

Are you hunting for some accurate and detailed piece of information about Battery Discharge Rates? If yes, then you have landed on the best website because we have got you covered with the perfect answers to all your battery discharge rate questions! The battery discharge rate is a very confusing topic that does not involve any relevant answers on the internet but here in this informative article, you will get to know everything about "Battery Discharge Rates- Introduction, Calculation And Efficiency" in a most precise manner!

The battery of your car typically undergoes severe temperature fluctuations during its complete lifespan. The massive heat generated by the engine of your car declines the capacity of your car battery. In cold weather, the battery of your car may last for up to five or six years, whereas in hot weather conditions, the lifespan of your car's battery gets reduced to nearly three years. Isn't it surprising? Well, this happens because the heat of the hot weather affects the quality and performance of your car's battery.?

Knowing how long the battery of your car will last can help you save energy and money. The discharge rate of the battery affects the lifespan of the battery. So, it's important for you to know everything about the discharge rate of the car battery in order to keep your battery functioning for a long time.

So, let's start with the article and explore everything about battery discharge rates along with its introduction, efficiency, and calculation!

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## How much should a car battery discharge?

The discharge rate of a battery offers you the initial point for determining the capacity of a battery that is necessary to run multiple electrical devices. Whenever it comes to a car battery or any other battery, it is very much essential to determine its discharge rate. So, if you want to know how much should your car battery discharge, then we have got an answer!

A healthy and high-quality car battery must have a minimum charge of 12.7 volts or above. Whenever the voltage lowers down to 12.5 volts, it is immediately recommended to recharge the battery. So, this shows that a car battery with 12 volts or less is observed as completely dead.

## How do you calculate battery discharge?

?Calculating the discharge rate of the battery may seem to be an easy task, but it is not that sim as it seems with some of the methods. So, if you want to calculate the discharge rate of the battery easily, then you can use Peukert's law. Peukert's law is one of the easiest ways to determine the discharge rate of a battery.

As per Peukert's law, the discharge rate of the battery is calculated with the help of the following formula:

T = H (C / IH ?)?k

In this formula, H stands for discharge rate time in hours, C stands for the rated capacity of the discharge rate in amp-hours, I stands for discharge current in amp, k is the Peukert's constant without dimensions, and t stands for actual discharge time.

The rated discharge time for a car battery is what the battery manufacturers have rated as the discharge time for the same battery. This value is usually given with the number of hours at which the rate was actually taken. The Peukert's constant generally ranges from 1.1 to 1.3. The discharge of your car battery offers you with methods of calculating the other essential values like discharge rate constant and capacitance.

This was all about calculating the discharge rate of the battery with Peukert's law. Now, let's get an insight into "How fast do batteries discharge"?

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## How fast do batteries discharge?

If you're seeking an answer to how fast do batteries discharge, then we have got an answer! The discharge rate of every car battery entirely depends upon the load. On the label of every battery, you will see a rating name as RC. This RC rating stands for Reserve Capacity. The number that is displayed on this rating signifies how many minutes the battery will last, on the basis of 25 amps draw.

For example, if the label says RC 50, then the battery will last for 50 minutes with a load of 25 amps, and if the load is 5 amps, then it will last for roughly 5 hours.?

Now, if we talk about how fastly does a battery discharges, then the discharge rate of a flooded car battery is about 1% per day at room temperature and 0.25% per day at 10 degrees Celsius, and 1.5% at 30 degrees Celsius. At a temperature of 80 degrees F, a lead-acid battery will self-discharge at a rate of 4% a week and the battery with a 125 amp hour rating will self-discharge at a rate of nearly 5 amps per week.

## Last Few Words

That's all! Here you have come down to the bottom line of the article "Battery Discharge Rates- Introduction, Calculation, And Efficiency"! We hope that you have now got a clear knowledge of what battery discharge rate is, how to calculate the discharge rate, and many other things. Since the discharge rate of the battery has a direct impact on its lifespan, therefore you must always take care of the discharge rate of your car's battery, and you must also try to minimize it to the least so that your car battery can function properly for a longer time. Apart from this, if you've any doubt regarding other battery issues, then don't forget to check our other battery articles because we have got solutions for all the battery-related issues.

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