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Battery Capacity & Life Calculator

Battery Life Calculator: I have a battery and I want to run an (app) application against it. How long will it run? This calculator will tell you how long your battery will run.

Capacity from Current & Time

Current (mA)
Discharge Time (Hours)
Calculate Now
Reset
Enter the values above

Capacity from Voltage & Energy

Voltage (V)
Energy (Wh)
Calculate Now
Reset
Enter the values above

Parameters
  • Load (ampere or watt): Specify the load value, and select the load unit. For example, 100 Watt. Or 10 A. Use an average value if it is a cyclical load.
  • Voltage (Vdc): Specify the battery voltage in volts DC, if the load type is watt.
  • 2222
  • 3333

Note: The capacity calculated by this tool is only an approximate value. If you need an accurate assessment, please contact our professional engineers.

 

Note: The capacity calculated by this tool is only an approximate value. If you need an accurate assessment, please contact our professional engineers.

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Table of Contents
01

Enquiry and Design

Contact us with requirements. The technical team creates tailored designs.

02

Sampling and Sample Testing

Receive customized battery samples for evaluation within two days.

03

Confirmation and Production

Finalize specifications, sign the production contract, and pay a 30% deposit.

04

Delivery and Shipping

Make final payment, and arrange safe and efficient delivery.

Part 1

Reel in the kind of real trolling motor power you need.

Visit your nearest Interstate All Battery Center for a long-lasting trolling motor battery out of a wide-ranging selection of marine batteries.

FIND A LOCATION

Part 2

AA Battery

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    Electrolyte

    Uses a polymer gel electrolyte instead of a liquid electrolyte.

  • +

    Energy Density

    High energy density, allowing for compact and lightweight designs.

  • +

    Power Density

    High power output, suitable for devices with high current demands.

  • +

    Cycle Life

    Good cycle life, but can degrade faster than LiFePO4 batteries.

AAA Battery

  • +

    Chemistry

    Uses Lithium Iron Phosphate as the cathode material.

  • +

    Weight

    Generally heavier than LiPo batteries.

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    Power Density

    Lower energy density compared to LiPo batteries.

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    Cycle Life

    Excellent cycle life, can withstand many charge-discharge cycles with minimal capacity loss.

     
     

Part 3

01

Enquiry and Design

Contact us with requirements. The technical team creates tailored designs.

02

Sampling and Sample Testing

Receive customized battery samples for evaluation within two days.

03

Confirmation and Production

Finalize specifications, sign the production contract, and pay a 30% deposit.

04

Delivery and Shipping

Make final payment, and arrange safe and efficient delivery.

 

Part 4

1

What is battery voltage, and why does it matter?

Battery voltage measures the electrical potential difference between its terminals. It determines compatibility with devices—too high can damage them, while too low may cause poor performance or failure.

2

Can I use a higher-voltage battery in device if it fits?

No! Higher voltage can overload circuits. Always match the device's specified voltage (e.g., using 12V in a 9V device risks damage).

3

What’s the difference between nominal and actual voltage?

  • Nominal voltage is the standard rating (e.g., 3.7V for lithium-ion).
  • Nominal voltage is the standard rating (e.g., 3.7V for lithium-ion).
 
Parameters
  • Load (ampere or watt): Specify the load value, and select the load unit. For example, 100 Watt. Or 10 A. Use an average value if it is a cyclical load.
  • Voltage (Vdc): Specify the battery voltage in volts DC, if the load type is watt.