Enter the battery capacity and the charge rate current into the calculator to determine the total time to charge to 100%.

- Battery Capacity Calculator (Amp Hours)
- Electric Potential Calculator
- Charge Calculator
- Battery Run Time Calculator

## Battery Charge Formula

The following equation is used to calculated the battery charge time to 100% from 0%.

T = C/R

- Where T is the total time hours
- C is the capacity in mAH
- R is the rate in mA

## Battery Charge Definition

A battery charge is defined as the total amount of time it takes a battery to charge from 0 to 100% or near 100%.

## Battery Charge Example

How to calculate battery charge time?

**First, determine the total capacity.**Calculate the total capacity of the battery.

**Next, determine the charge rate.**Calculate the average rate of charge.

**Finally, calculate the time.**Calculate the charge time using the equation above.

## FAQ

**How long does it take to charge a battery?**

The time it takes to charge a battery depends on the current being used to charge and the total size of the battery.

**What is a battery capacity?**

A battery capacity is the total amount of electrical energy a batter can hold when charged.

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