# Calculate Battery Size For Any Size Inverter (Using Our Calculator)

Pairing a right size capacity battery for an inverter can be a bit confusing for most the beginners

So I have made it easy for you, use the calculator below to calculate the battery size for 200 watt, 300 watt, 500 watt, 1000 watt, 2000 watt, 3000 watt, 5000-watt inverter

## Inverter Battery Size Calculator

Note! The battery size will be based on running your inverter at its full capacity

Assumptions

• Modified sine wave inverter efficiency: 85%
• Pure sine wave inverter efficiency: 90%
• Lithium Battery: 100% Depth of discharge limit
• lead-acid Battery: 50% Depth of discharge limit

Instructions!

• Inverter runtime: is the total number of hours you would need to run your load on an inverter
• Inverter input Volts (V): Are you using a 12v, 24v, or 48v solar system?
• Select a battery type: Select the type of battery you would like to use (Lea-acid, AGM, or Lithium)
`๐๐ฆ๐ฉ๐จ๐ซ๐ญ๐๐ง๐ญ ๐๐จ๐ญ๐! If you're not running your inverter at its full capacity, For Example, let's say you have a 1000W inverter but your daily total load at a time doesn't exceed 600 AC watts so instead of entering 1000 in the inverter size box you can enter 600 which will give a battery size according to your load`

To recharge your battery from time to time you would need the right size solar panel to do the job! Read the below article to find out the suitable solar panel size for your battery bank

Related Post: Solar Panel Calculator For Battery

## How To Calculate Battery Capacity For Inverter

To calculate the battery capacity for your inverter use this formula

Inverter capacity (W)*Runtime (hrs)/solar system voltage = Battery Size*1.15

Multiply the result by 2 for lead-acid type battery, for lithium battery type it would stay the same

Example

Let's suppose you have a 3000-watt inverter with an 85% efficiency rate and your daily runtime is about 5 hours using a 24v solar system

`3000*5/24 = 625`

Now to cover watt losses when converting DC to AC

`625*1.15 (85% inverter efficiency) = 718Ah`

## How many batteries for 3000-watt inverter

You would need around 24v 150Ah Lithium or 24v 300Ah Lead-acid Battery to run a 3000-watt inverter for 1 hour at its full capacity

## Battery Size Chart For Inverter

Here's a battery size chart for any size inverter with 1 hour of load runtime

Note! The input voltage of the inverter should match the battery voltage. (For example 12v battery for 12v inverter, 24v battery for 24v inverter and 48v battery for 48v inverter

Summary

## Battery to inverter wire size chart

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I hope this short guide was helpful to you, if you have any queries Contact us do drop a comment below. Thank You!