24V Battery Voltage Chart (Understanding Voltage) - ShopSolar.com
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24V Battery Voltage Chart

Short on Time? Here’s The Article Summary

The article explains the significance of a battery voltage chart, particularly in understanding how the voltage of a battery correlates with its charge percentage. It emphasizes the importance of maintaining a consistent voltage supply to appliances to avoid damage. The article discusses two types of batteries commonly used in solar power systems: sealed lead acid and flooded lead batteries, highlighting their characteristics and voltage charts. It also touches on lithium-ion batteries as a more modern and efficient option.

Furthermore, it addresses the importance of matching the voltage of batteries and inverters to avoid damaging electronics. It provides voltage charts for various battery types and sizes, as well as a mention of the EcoFlow Delta Pro portable power station as a portable solar power solution. Overall, the article serves as a guide for solar power users to understand battery voltage and its implications, helping them make informed decisions about their solar power systems.


We’ve put together this helpful 24V battery voltage chart so that you can be informed about the relationship between voltage and battery percentage.

We’ll also explain a little bit about voltage and what it means for solar power users, to make solar simple for you.

What’s a Battery Voltage Chart?

A battery voltage chart shows you the relationship between the voltage of your batteries and their charge. Essentially, your battery has a slightly lower voltage capacity as it loses battery charge.

lead acid battery voltage chart

The chart gives you the battery percentage charge and voltage for various battery packs. It allows you to know how much voltage capacity your battery has left at any specific battery percentage.

Understanding Why a Battery Voltage Chart Is Important

A battery voltage chart is important to understand. Firstly, it helps you understand that your battery loses voltage as it loses battery percentage. 

When you understand the voltage capacity of your batteries, you’ll understand the abilities of your system to power your needs. The voltage supply to your appliances also needs to be kept consistent. This keeps the power supply at a safe level and keeps your appliances working properly.

If the voltage isn’t consistent, is too high, or is too low, your equipment or appliances can be damaged or “fried.” Let’s learn a bit more about this. 

When the voltage supplied to your appliances is too low, the amperage increases to compensate. This can cause the appliance to malfunction or even meltdown, as the increased amperage causes excessive heat. 

One place to start is with a Battle Born battery system. These batteries are high-quality and can hold a surprising amount of power considering their size. Check out our Battle Born battery voltage chart that explains these things a little further.

If the voltage is too high, the appliance can run “too fast.” This means the power it’s receiving is too much for its intended use, and it can shorten the lifespan of your appliance.

12 v battery voltage chart

24V Battery Percentage Chart

Our 24V battery voltage chart below gives you an indication of the voltage of your 24V battery at various battery percentages. Have a look to understand how the voltage changes slightly over time in a sealed lead acid battery.

























As mentioned, these values are specific to a sealed lead acid battery. These batteries can’t be opened, and the technology used to make them is about 160 years old. They’re not the most modern option, but they’re still relatively popular.

They’re fairly cheap, have a high power output, and recharge quickly. On the other hand, they’re heavy batteries. This is why some people have opted to move away from them.

battery voltage chart 12v

Flooded lead batteries are another popular option for solar inverters. They work with a higher voltage to keep amperage low. This solves the problem we explained above, whereby a high amperage can damage your appliances and shorten their lifespan.

These batteries also require less wiring, saving you some money during the installation phase. Here’s a battery voltage chart indicating the voltage reduction in a 24V flooded lead battery:

























As you can see in these voltage charts, a fully charged battery has a voltage higher than the displayed voltage. The difference isn’t big enough to damage your electronics or appliances. It ensures that even at a low charge, you’re getting the displayed voltage. 

Voltage and Solar Power

Real-world conditions are almost never the conditions your battery is tested under. This is why the voltage fluctuates from the advertised voltage. But why do you need to be aware of the voltage of your battery? We’ll explain this below.

The first reason you need to be aware of your battery’s voltage is to make sure it meets your needs. If you invest in a battery that’s got a lower voltage than your requirements, you run the risk of damaging your electronics. 

They won’t be able to function properly or can stall. Over time, connecting them to a battery that has a low voltage can reduce their lifespan. This means you might need to replace your electronics sooner than you planned.

If you invest in a battery that’s too powerful for your electronics, you also run the risk of damaging them. You can “fry” the wiring inside your devices, which means they would immediately stop working.

The second reason you need to be aware of the voltage of your battery is to safeguard your inverter. Some people choose to buy a battery and inverter separately, as opposed to an inverter containing an already-fitted battery. 

12v battery voltage chart

When doing this, it’s important that the two are compatible. If the battery voltage exceeds the limit set for your specific inverter, it can cause damage to the components of the device. The inverter bridge is the component most frequently damaged by high voltages.  

What Voltage Battery You Need

The battery and inverter size you need depends on what you’re going to power. It’s pretty simple: if you’re going to power big appliances that need a lot of electricity to run, you’re going to need a bigger inverter and battery capacity. 

If you’re powering very large appliances, have a look at our 52V battery voltage chart.

The same applies to smaller appliances. Have a look at our 6V battery charge chart if this is the case. 

Some people prefer lithium-ion batteries to power their appliances. These batteries are smaller, lighter, and more durable than the older options. They cost a bit more but are worth it in the long run if you can manage the slightly higher upfront costs. They also charge faster and are resistant to self-discharging.

Our lithium-ion battery voltage chart will teach you more about the voltage discharge rate of these batteries. 

Looking for a Portable Solar Power Solution?

Many people looking for smaller batteries are interested in portable power solutions, and we’ve got the perfect one for you. Whether you’re going camping or taking a cross-country road trip in your RV, this portable solution will give you more than enough power.

The EcoFlow Delta Pro portable power station is the most powerful solar inverter ever released by Ecoflow. It’s lithium-based and was designed to give you quick and easy portable power, whenever you need it. 

12 volt battery voltage chart

Its standard capacity is 3600 watt-hours with a 120V output. It’s expandable though, so if your needs exceed this, you can add up to 3600 watt-hours in expansion battery packs. This would give you a whopping 25kWh of power on a portable inverter!

This unit offers the same amount of power that a professionally-installed solar setup would. This means you can travel freely, knowing you’ll never need to worry about how you’re going to power your devices for long periods of time.

You don’t even need to worry about buying adapters to keep you going on your journey. Here’s everything that comes with this incredible portable inverter:

  • 1 x Remote Monitor & Control Display Screen
  • 1 x AC Wall Charging Cable
  • 1 x Car Charging Cable
  • 1 x Standard Solar Charging Cable
  • 1 x DC5521 to DC5525 cable
  • 1 x Handle Cover
  • 1 x User Manual
  • 1 x Digital Copy of our 10,000 Word Solar Generator Setup & Maintenance Guide

The device has a 5-year warranty and comes with lifetime customer support. If you’re not sure whether this system is going to be enough for your needs, check out our solar panel voltage chart to fill you in.

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Article by

Alex S

Alex is a co-founder of Shop Solar, a company that he established in 2018 to revolutionize the solar industry by simplifying the process and making it more simple and cost-effective. Under his strategic leadership, Shop Solar has grown into a comprehensive one-stop-shop, empowering over 40,000+ customers to access top-quality solar and storage solutions, comprehensive information, intuitive tools, and professional installation services.

With a passion for innovation and sustainable energy, Alex has successfully expanded the business's reach and impact, serving as a driving force in the company's growth and development. You can browse best seller's here.

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Ahona - February 28, 2024

Bonjour je voulais un renseignement au niveau des batteries

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