10 Best Free Online Battery Capacity Calculator Websites

Here is a list of best free online battery capacity calculator websites. Battery Capacity is the amount of electrical energy a battery can generate using its electrochemical reaction happening within it. It is mainly calculated in Amperehour (AH) unit. Battery Capacity helps users and manufacturers understand how long a battery will take to discharge when under a certain load. Although, it is not that simple to calculate the correct battery capacity required for a system. To do that, users can try these online battery capacity calculator websites.

These websites come with simple battery capacity calculators that anyone can use. In general, these websites require Battery Life and Load Current values to find out the battery capacity value in Ah. In battery capacity calculations, some calculators can also consider battery age, battery type (GEL, AGM, or Flooded), and battery working temperature parameters. Apart from battery capacity, these websites can also be used to calculate other battery parameters like Run Time, C-rate, Battery Life, etc. The process to calculate battery capacity and other battery parameters is quite simple. Plus, I have also mentioned the steps of battery capacity calculation in the description of each website.

These websites also come with multiple additional calculators and tools. Some additional tools that they offer are Wind Energy Calculator, Kinetic Energy Calculator, Power Calculator, and Unit Converter. Go through the list to know more about these websites.

My Favorite Online Battery Capacity Calculator Website:

omnicalculator.com is my favorite website as it can calculate battery capacity as well as C-rate of a battery. Plus, it also shows the formula that it uses to calculate the battery capacity.

You can also check out lists of best free online Online LED Resistor CalculatorOnline Voltage Divider Calculator, and Online Gravel Calculator websites.

Table of Contents:

omnicalculator.com

omnicalculator.com is a free online battery capacity calculator website. Using this website, users can calculate the capacity of a battery in Amperehour and milliampere-hour units. To do that, it only needs battery voltage and watt-hours or joules values. Although, users can also use this calculator to calculate the C-rate parameters of a battery. This website shows the formulas that it uses to perform battery capacity calculations. Now, follow the below steps.

How to calculate battery capacity online using omnicalculator.com:

  • Visit this website and access the Battery Capacitor Calculator.
  • After that, enter the known battery voltage and watt-hours or joules values.
  • Finally, view the calculated battery capacity value.

Additional Features:

  • This website comes with hundreds of additional calculators covering various fields like Chemistry, Construction, Biology, Finance, Food, and more.

Final Thoughts:

It is one of the best free capable online battery capacity calculator websites that anyone can use to calculate the battery capacity and C-rate battery parameters.

electricaltechnology.org

electricaltechnology.org is a free online battery capacity calculator website. Using this website, users can calculate how long a battery will last. To do that, it uses a battery life in hours and load current consumption in milliamperes values. As a result, it provides a battery capacity rating of mAh. Besides this, it also shows the formula that it uses to perform the calculation. Now, follow the below steps.

How to calculate battery capacity online using electricaltechnology.org:

  • Go to this website and open up the battery Capacity Calculator.
  • After that, enter the battery life and load current values.
  • Finally, click on the Calculate button to view the final battery capacity rating value.

Additional Features:

  • Electrical Wiring: This section offers multiple electrical diagrams like Electrical Wiring, Inverter Wiring, Solar Panel Wiring, and more.
  • This website also covers basic electronic components, generators, motors, and many other electronics and electrical topics.

Final Thoughts:

It is a good online battery capacity calculator website that allows users to quickly calculate the battery capacity value.

eepower.com

eepower.com is another free online battery capacity calculator website. Using this website, users can calculate the battery capacity in terms of charge. It mainly helps users to find out the battery capacity needed to run a specific device. Now, to perform the calculation, users need to enter the Battery Life in mAH and Load Current in mA units. It also shows the equation that it uses to find out the battery capacity rating. Now, follow the below steps.

How to calculate battery capacity online using eepower.com:

  • Go to this website and open up the battery capacity calculator.
  • After that, enter the known battery life and load current values.
  • Finally, click on the Calculate button to start the calculation process.

Additional Features:

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  • This website also comes with additional power electronics calculators like Power Calculator, Delta Wye Calculator, Power Dissipation Calculator, and more.

Final Thoughts:

It is another good online battery capacity calculator website that allows users to calculate their battery capacity.

power-calculation.com

power-calculation.com is another free online battery capacity calculator website. This website is specially designed to calculate the battery pack capacity. Apart from battery capacity, it can also be used to calculate the c-rate, run-time, and charge battery parameters. This calculator can be used to calculate the battery capacity of different battery types like lithium, Alkaline, LiPo, Li-ION, and more. Now, follow the below steps.

How to calculate battery capacity online using power-calculation.com:

  • Visit this website using the given link.
  • After that, enter the voltage of battery, rated capacity of one battery, charge-discharge rate, etc., values.
  • Next, view the calculated capacity of the storage system in kWh.

Additional Features:

  • On this website, users can also find additional online calculators like Wind Energy Calculator, Solar Photovoltaic Energy Calculation, Kinetic Energy Calculation, and more.

Final Thoughts:

It is another good online battery capacity calculator website that allows users to calculate battery capacity, battery voltage, etc., parameters of a battery.

mustcalculate.com

mustcalculate.com is another free online battery capacity calculator website. This website comes with a simple battery capacity calculator. This calculator helps users calculate the exact battery capacity in Watt-hours units. To perform the calculation, it requires two input parameters namely Battery Voltage and Battery Ampere Hours. It also offers multiple examples to help users understand the calculation process. Now, follow the below steps.

How to calculate battery capacity online using mustcalculate.com:

  • Go to this website and access the Battery Capacity Calculator section.
  • After that, enter the battery voltage and Ampere-hours values.
  • Finally, click on the Calculate button to view the final battery capacity.

Additional Features:

  • This calculator also contains additional electronics calculates like Expression Calculator, Unit Converter, Value Converter, Linear Regulator Calculator, and more.

Final Thoughts:

It is a straightforward online battery capacity calculator website that anyone can use with ease.

jcalc.net

jcalc.net is another free online battery capacity calculator website. This website comes with an advanced battery capacity calculator that can calculate battery capacity along with load current, battery discharge rate, and discharge rate specification. To perform the calculation, users do need to enter battery load, voltage, battery type (Leap Acid or Lithium-ion), Load Duration, and Remaining Charge Percentage values. Plus, it also shows all the formulas that it uses to perform the calculation. Now, follow the below steps.

How to calculate battery capacity online using jcalc.net:

  • Launch this website and open up the Battery Size Calculator.
  • Now, enter the Load, Voltage, Battery Type, etc., required input parameters.
  • Finally, click on the Calculate button to initiate the conversion process.

Additional Features:

  • Calculators: This website offers multiple online calculators such as Motor Speed Calculator, Generator Load Current Calculator, Full Load Current Calculation, etc.

Final Thoughts:

It is another capable online battery capacity calculator website that allows users to calculate battery capacity, load current, and many other battery parameters.

leisurepower.co.uk

leisurepower.co.uk is another good online battery capacity calculator website. This website helps users find out a battery of optimum capacity based on their requirements. Users just need to enter the parameters of their requirements namely battery wattage, battery voltage, and number of hours a battery should run. Using the provided parameters, it starts the calculation process and shows the output battery capacity value in the Amperehour unit. Now, follow the below steps.

How to calculate battery capacity online using leisurepower.co.uk:

  • Visit this website using the given link.
  • After that, enter the battery wattage, battery voltage, and battery run time input parameters.
  • Next, click on the Calculate button to start the calculation process and view the final battery capacity value.

Additional Features:

  • This website also carries tools and calculators related to Batteries, Power Electronics, Portable Power Stations, Solar, and more.

Final Thoughts:

It is a simple and effective online battery capacity calculator website through which users can find out the battery of the right capacity according to their needs.

batterystuff.com

batterystuff.com is yet another free online battery capacity calculator website. This website lets users find a 12-volt battery of suitable capacity based on their requirements. Users need to input Load size in Amps and Load duration values to specify their requirements. Besides primary input values, it can also consider Battery Type (GEL, AGM, or Flooded), Battery Working Temperature, and Age. After considering all the input parameters, it calculates and shows the required battery capacity of 12 volts in the AH unit. Now, follow the below steps.

How to calculate battery capacity online using batterystuff.com:

  • Visit this website and open up this calculator.
  • After that, enter the Load Size and Load Duration values.
  • Now, specify the battery operating temperature, battery type, and battery age.
  • Finally, click on the Calculate button to view the calculated battery capacity.

Additional Features:

  • This website also carries multiple solar and battery-related calculation tools such as Battery Run Time Calculator, Solar Calculator, AC to DC Amperage Conversion calculator, and more.

Final Thoughts:

It is another capable online battery capacity calculator website that anyone can use without much hassle.

batterygroup.co.uk

batterygroup.co.uk is another free online battery capacity calculator website. Using this website, users can calculate the optimal battery capacity required based on load and corresponding system voltage. Plus, it also explains the steps users should take to find out a battery of the correct capacity. As input, it requires power requirement of the device, voltage of the device, and regular run time of the system before battery recharging. Now, check out the below steps.

How to calculate battery capacity calculator online using batterygroup.co.uk:

  • Go to this website and open up the Capacity Calculator.
  • After that, enter the Power, Voltage, and Working Hours values.
  • Next, click on the Calculate button to view the required battery capacity in the Amperehour unit.

Additional Features:

  • On this website, users can browse and purchase battery and Power Electronics equipment of various types.

Final Thoughts:

It is another straightforward online battery capacity calculator that uses system power, system voltage, and system running time values to perform the calculation.

byjus.com

byjus.com is the last free online battery capacity calculator website. Using this website, users can calculate three battery parameters namely Battery Capacity, Load Current, and Battery Life. To find out the battery capacity, users need to enter the known Battery Life and Load Current values. It provides the steps of calculation along with an explanation of the battery life parameters. Now, follow the below steps.

How to calculate battery capacity online using byjus.com:

  • Visit this website using the provided link.
  • After that, enter the Load Current and Batter Life values.
  • Next, enter x in the Battery Capacity field.
  • Finally, click on the Calculate x button to view the calculated battery capacity value.

Additional Features:

  • Calculators: A good set of additional online calculators are present on this website like Area Calculator, MOD Calculator, Mass to Energy calculator, Hyperbola Calculator, etc.
  • Courses: This website also offers study material and courses for students of different fields.

Final Thoughts:

It is a simple-to-use online battery capacity calculator that can also be used to calculate the Load Current and Battery Life.

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Naveen Kushwaha

Passionate about tech and science, always look for new tech solutions that can help me and others.

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