# What Size Solar Panel To Charge 150ah Battery? (Calculator)

What size solar panel do you need to charge a 150ah battery? Enter the battery specs into our solar panel size calculator to find out, or use the tables given below this page.

## Calculate what size solar panel for 150ah battery

Battery Capacity (Amp-hours)
Ah
Battery Voltage
V
Battery Type
Battery Depth of Discharge
%
Charge Controller Type
Desired Charge Time (Peak sun hours)
hours

Note: If you already have a solar panel and want to know how long it will take to charge your 150ah battery, use our solar battery charge time calculator.

### How to use this calculator?

• Enter battery capacity in amp-hours (Ah): I've already put 150 for you.
• Enter the battery volts: Is this a 12, 24, 36, or 48 volts battery?
• Select the battery type: Do you have a lead-acid, AGM, or lithium-ion (LiFePO4) battery?
• Enter the battery depth of discharge (DoD): Battery DoD is the percentage of the battery that has been discharged relative to the total battery capacity. For half discharged battery, ENTER 50. If the battery is fully discharged which you can achieve on a lithium battery, ENTER 100.
• Select charge controller type: Are you using a PWM or MPPT charge controller to charge the battery?
• Enter desired charge time (in peak sun hours): How fast would you like to recharge your battery in peak sun hours? Click here to read about peak sun hours and how to calculate them.

After entering the information, click “Calculate" button to find out the required solar panel size for your 150ah battery.

### Example

Suppose you have a 12v 150ah lead-acid battery with 50% depth of discharge and an MPPT charge controller. You want to recharge your battery in one day and your location receives 6 peak sun hours daily.

You need a 210 watt solar panel to fully charge a 12v 150ah lead-acid battery from 50% depth of discharge in 6 peak sun hours using an MPPT charge controller.

Read the below post to find out how fast you can charge your battery.

Related Post: Guide: Maximum Charging Current & Voltage For 12v Battery

## What Size Solar Panel To Charge 12v 150ah Lead-Acid Battery?

### Summary

• You need about 250 - 300 watt solar panel to charge a 12V 150Ah lead-acid battery from 50% depth of discharge in 5 peak sun hours.

## What Size Solar Panel To Charge 12v 150ah Lithium (LiFePO4) Battery?

### Summary

• You need around 450 - 500 watt solar panels to charge a 12V 150Ah lithium battery from 100% depth of discharge in 5 peak sun hours.

## What Size Solar Panel To Charge 24v 150ah Lead-Acid Battery?

### Summary

• You need around 500 - 600 watt solar panels to charge a 24V 150Ah lead-acid battery from 50% depth of discharge in 5 peak sun hours.

## What Size Solar Panel To Charge 24v 150ah Lithium (LiFePO4) Battery?

### Summary

• You need around 850 - 1000 watt solar panels to charge a 24V 150Ah lithium battery from 100% depth of discharge in 5 peak sun hours.

## 150Ah Battery: FAQs

How many watts is a 150Ah battery?

12v 150ah battery is equal to 1800 watt-hours. to calculate the battery watts use this formula (battery Ah × battery volts)

How long does it take to charge a 150Ah battery?

150ah battery will take between 5-20 hours to charge, the exact number will depend on the size of the solar panel.

How many amps does it take to charge a 150Ah battery?

You need 30 amps to fully charge a 150ah lithium battery in 5 hours from 100% depth of discharge.