Use our lithium (LiFePO4) battery watt-hour calculator to convert the battery capacity from amp hours (Ah), or milliamp hours (mAh) to watt hours (Wh).

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## Lithium (LiFePO4) battery watt-hour calculator

**Note: **1000 milliamp hours is equal to 1 amp.

### How to use this calculator?

**1 - Enter the battery capacity and select the unit type. **The unit types are amp-hours (Ah), and milliamp-hours (mAh). For example, if you have a 100ah battery, enter 100 and select the unit type to Ah.

**2 - Enter the battery voltage. **Is this a 6v, 12v, 24v, or a 48v battery? It should be mentioned on the specs sheet of your battery or on the battery itself.

**3 - Optional: Enter the number of batteries if you're using multiple batteries.**

*(Default value will be 1)*

### example: how many watt-hours are in a lithium battery?

100Ah lithium battery is equal to **1200 watt-hours** of usable energy.

## How do you calculate lithium battery watt-hours?

Multiply the battery capacity in amp-hours (Ah) by the battery voltage to calculate watt hours (Wh).

**Formula: **Battery capacity Watt-hours = Battery capacity Ah × Battery voltage

### Example

Let's say you have a 12v 200ah lithium battery.

**12v 200Ah battery into watt hours** = 200 × 12 = 2400Wh

## Lithium Battery amp-hours to Watt Hour Calculation

Here's a chart about different capacity (Ah) lithium batteries into watt hours @ 12v, 24, and 48v.

Battery Ah | watt-hours @ 12v | watt-hours @ 24v | watt-hours @ 48v |
---|---|---|---|

20Ah | 240 Wh | 480 Wh | 960 Wh |

50Ah | 600 Wh | 1200 Wh | 2400 Wh |

70Ah | 840 Wh | 1680 Wh | 3360 Wh |

100Ah | 1200 Wh | 2400 Wh | 4800 Wh |

120Ah | 1440 Wh | 2880 Wh | 5760 Wh |

150Ah | 1800 Wh | 3600 Wh | 7200 Wh |

200Ah | 2400 Wh | 4800 Wh | 9600 Wh |

300Ah | 3600 Wh | 7200 Wh | 14,400 Wh |

400Ah | 4800 Wh | 9600 Wh | 19,200 Wh |

## Why calculate battery watt-hours?

Energy is equal to amp-hours multiplied by volts. Converting battery amp hours to watt-hours will give an idea of how much actual energy your battery can store or deliver.

**For example,** A 36v 12.8ah battery can store or deliver more energy than a 12v 30ah battery.

`36v * 12.8ah = 460.8Wh`

`12v * 30ah = 360Wh`

The benefit of converting battery amp hours to watt-hours:

**Makes it easy to calculate the battery runtime on a specific load.**The energy or power consumption for most of the appliances is mentioned in watts or watt-hours. So, converting battery capacity in watt hours will make it easy for you to estimate the battery runtime on a load.

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*i hope this guide was helpful to you. Contact us for more information or suggestions. Thank you!*