# What Size Solar Panel To Charge 24v Battery? (incl. Calculator)

Use our free online solar panel size calculator to find out what size solar panel to charge a 24v battery in desired peak sun hours.

## Calculate solar panel size for 24v battery

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

Note: Click here to read our in-depth post on how to use this calculator and what factors it takes into account and some shortcomings of this calculator.

Battery depth of discharge is the percentage of the battery that has been discharged relative to the total battery capacity. For half discharged battery ENTER 50. And if the battery is fully discharged (which you can achieve on a lithium battery), ENTER 100.

Desired Charge time (in peak sun hours): How fast would you like to charge your battery in peak sun hours?

Must read: Peak Sun Hours: Explanation, Importance, How To Calculate?

### Example

Let's suppose...

• Battery capacity: 200ah
• Battery voltage: 24v
• Battery depth of discharge: 50% (half discharged)
• Charge controller: MPPT
• Desired charge time: 6 peak sun hours

Turns out, you need about 550 watts of solar panels to fully charge a 24v 200ah lead acid battery from 50% depth of discharge in 6 peak sun hours.

Note: Deep cycle batteries are designed to be charged and discharged at a specific rate, which is called c-rating. Use our battery C-rate calculator to find out how fast you can charge or discharge your battery.

## What Size Solar Panel To Charge 24v Battery?

Here's a chart on what size solar panel you need to charge different capacity 24v lead-acid and Lithium (LiFePO4) batteries in 5 peak sun hours using an MPPT charge controller.

### Summary

• You need around 500-700 watts of solar panels to charge most of the 24V lead-acid batteries from 50% depth of discharge in 5 peak sun hours.
• You need around 1-1.2 kilowatt (kW) of solar panels to charge most of the 24V lithium (LiFePO4) batteries from 100% depth of discharge in 5 peak sun hours.

## How Many Solar Panels Does It Take To Charge A 24v 200Ah Battery?

Here's a chart about what size solar panel you need to charge a 24v 200ah lead-acid and lithium battery using an MPPT charge controller with different peak sun hours.

### Summary

• You need around 830 watts of solar panels to charge a 24V 200ah lead-acid battery from 50% depth of discharge in 4 peak sun hours.
• You need around 1450 watts of solar panels to charge a 24V 200ah Lithium (LiFePO4) battery from 100% depth of discharge in 4 peak sun hours.

## What Size Solar Panel To Charge 24v 100Ah Battery?

Here's a chart about what size solar panel you need to charge a 24v 100ah lead-acid and lithium battery using an MPPT charge controller with different peak sun hours.

### Summary

• You need around 280 watts of solar panels to charge a 24V 100ah lead-acid battery from 50% depth of discharge in 6 peak sun hours.
• You need around 490 watts of solar panels to charge a 24V 100ah Lithium (LiFePO4) battery from 100% depth of discharge in 6 peak sun hours.

Related Post: How Many Watts Can A Charge Controller Handle?

## Can A 12-Volt Solar Panel Charge A 24-Volt Battery?

In short, Yes, a 12v solar panel can charge a 24v battery. To get the maximum from a 12v solar panel to charge your 24v battery use an MPPT charge controller or connect two 12v solar panels in series to charge a 24v battery using a PWM charge controller.