How to Build a Home Backup Power System with Aolithium Batteries?

Lithium-ion batteries have been widely used in portable electronics, electric vehicles, and grid storage due to their energy consumption and throughput. Lithium batteries are low cost, have a high energy density, and maintain long cycle life; it is widely used in innovative DIY projects by utilizing 12V 100Ah batteries, creating a portable power system.

Here are a case of DIY home backup power system with Aolithium 12V 100Ah batteries.

Meet Gina, she was an Air Force Veteran based in remote areas of Reno. Gina enjoyed her time living on a luxury school bus along with her husband. She joined Air Force back in 2005 in the healthcare management department and was stationed or deployed at various military remote bases like Nevada, Carolina, etc. She belongs to a military family with a major influence on living and values. She enjoyed her military role and responsibilities at such a young age and credited her time in the military as helping to improve her living. 

She got retired from Air Force after serving 20 years and joined the City College of Washington as a lecturer. At Washington, she lives in an apartment at second floor and pays $1500 monthly rent for her room. Along with Gina, four other people are also living with her in a shared apartment with separate rooms. Gina and her fellows are enjoyable and productive people.


At a certain time, they face electricity failover, so they need a gas generator to keep as a backup for the apartment. When the power goes out, Gina encountered the difficulty of igniting the generator and keeping it maintained, fueled, and ready to operate. Therefore, she now decided to get rid of the gas generator and upgrade the home backup power system using Lithium Batteries.

Gina with her apartment fellows executed the DIY project and planned to build a Lithium-ion battery-based power backup system which is trouble-free for them and small enough to easily portable while still having enough power to get over any domestic power outages. Gina researched about the several batteries that she wanted to use for the backup system and subsequently found LiFePo4 (lithium iron phosphate) 12V batteries as the most satisfactory solution for electricity storage and long life usage. She finds it easy to relocate with a reasonable combined size system with various exceptional features. She also liked the feature that they charged 100% for storage and no power lost after being stored for a few months.

After finalizing, she orders a high-quality standard Lithium battery of 100 Ah (Ampere Hours) that will store about 1.2 kWh (KiloWatt-hours) which costs her around $600-650 on Amazon's online store. She discovers that these batteries give enough power capacity to keep a home refrigerator or freezer functional for about 24 hours.

As per her research, she gets two of the Aolithium 100Ah 12V LiFePO4 Batteries with a Bluetooth feature that checks usage statistics and the state of charge on a mobile phone. Furthermore, these LiFePo4 batteries can connect in parallel to add more power to your backup system. Since they are 12V batteries, there is no chance of being electrocuted while operating with them. Gina added her comment that you need to be cautious not to short-circuit the two poles, as this will melt any wire if a circuit breaker is not connected to it.

Gina and her apartment friends fixed two 100Ah batteries and connected them in parallel (200Ah x 12V = 2.4 kWh) housed in a plastic container; now, they have about 2.5 kWh of electricity. Moreover, this power backup is small enough to facilitate them to carry back into their minivan when they want to go on road trips.

For charging these batteries, she buys very powerful chargers that will recharge them in a couple of hours. She also recommends going for a Smart IP65 12-Volt 5-amp Battery Charger with Bluetooth features that contain many safety features and prevent you from doing anything that damages your batteries.

Gina is the immense motivation for anyone looking for a DIY home backup system. As per her analysis, this backup system that they put together comprises enough power to be accommodating long hours’ power outage. Finally, their apartment is fully equipped with power backup to avoid any hassle and store all their perishable food that needs refrigeration without any worry; also, all the essential household electronics that require power will operate intrepidly.


How to Build a Home Backup Power System with Aolithium Batteries?

In an increasingly interconnected and electrified world, power outages can disrupt our daily lives, causing inconvenience and potential hazards. Whether it's a severe storm or the sudden loss of electricity can leave us vulnerable and helpless.

Are you tired of being caught off guard by sudden power outages, leaving you in the dark and disconnected from the world?

Building your own DIY battery backup for your home can be the perfect solution!

With the ability to keep essential appliances running, stay connected, and ensure safety, a well-designed backup power system is a valuable investment for any homeowner.

In this guide, we will explore the key components needed to construct a reliable backup power system, emphasizing safety considerations that are paramount to protecting both your family and your property. By the end of this article, you will be equipped with the knowledge and confidence to build a robust backup power system, empowering you to embrace the unexpected with peace of mind.

So why wait? Let's get started!

Assessing Power Needs before you build a DIY Home Backup Power System

When embarking on the journey to build your own DIY home backup power system, the first crucial step is to assess your power needs accurately. After all, you want a system that can handle your essential appliances and devices without a hitch.

· Calculating Total Power Consumption

To determine how much power your backup system needs to deliver, begin by creating a list of all the electrical devices you intend to power during an outage, including everything from lights and refrigerators to computers and medical equipment. For each item on your list, find its wattage rating (usually specified on a label or in the user manual). Once you have all the wattage values, add them up to get the total power consumption in watts.

· Identifying Critical Appliances and Devices

Not all devices are equally essential during a power outage. Prioritize and identify the critical appliances and devices that you cannot do without during such times. For example, medical equipment, security systems, and heating or cooling systems may be crucial for your family's safety and well-being. By focusing on these essentials, you can better tailor your backup power system to meet your specific needs.

· Estimating The Required Backup Power Capacity

Now that you have your total power consumption and a list of critical appliances, it's time to estimate the required backup power capacity. Remember, your backup system should be capable of handling both the starting (surge) and running power requirements of your devices. Surge power is the extra power needed when some appliances startup, like refrigerators or air conditioners. Ensure your backup power source, whether it's a generator, solar power system, or batteries, can handle these peak demands without overloading.

Building A DIY Battery Backup for Home - A Step-By-Step Guide

Below is the step-by-step process to create a basic battery backup system for essential appliances and devices. Keep in mind that working with electrical components can be dangerous, so ensure your safety by taking necessary precautions.

1. Choose the Right Battery by Aolithium

Choosing the right battery is a crucial step when building a battery backup for a home system. You will need several batteries depending upon the power consumption needs of your house you estimated before. Try to select a battery power capacity 2x higher than your calculated value to ensure sufficient backup time and not discharge quickly. Deep discharging can damage the battery's performance and reduce its lifespan.

You can calculate the battery capacity (in ampere-hours, Ah) using the formula:

Total Power Consumption (Wh) / Battery Voltage (V) = Battery Capacity (Ah).

There are various battery technologies in the market, including lead acid batteries, lithium batteries, etc., but the best batteries used in back power systems nowadays are lithium batteries.

Selecting a lithium battery by Aolithium (12V or 24V, based on your requirements) can be the right choice for your home backup. Aolithium batteries are generally known for a high DoD (depth of discharge), allowing for efficient use of the stored energy. They typically have good battery power and a longer lifespan.

2. Select a Power Inverter

A power inverter is a vital component in a DIY home backup system because it performs the critical task of converting direct current (DC) into alternating current (AC). The majority of household appliances and electronic devices operate on AC power. Thus, the power inverter changes the DC power from the batteries into usable AC power for your home.

As you have determined the load that the inverter needs to handle (This is usually measured in watts (W) and is equal to the sum of the power ratings of all the devices it will run), choose an inverter that matches the battery voltage and can handle the total wattage of the devices you want to power. For household appliances like refrigerators and air conditioners that draw a surge of power at startup, ensure that the inverter's surge capacity can accommodate this demand.

3. Choose A Right Battery Charger or Connect Solar Panels

If you opt for a battery charger, make sure it's compatible with the battery, and remember not to overcharge it. It should be able to manage the battery's charge cycles to maximize its lifespan and have safety features such as overcharge and short circuit protection.

If you plan on integrating solar panels, first assess your home's solar potential - how much sunlight you receive and the available space for solar panel installation. For most residential systems, monocrystalline or polycrystalline solar panels offer a good balance between efficiency, cost, and space requirements. When it comes to capacity, the system should generate enough power to meet your daily consumption and charge your backup battery. Remember, you'll also need a solar charge controller to regulate the power going from the panels to the batteries, preventing overcharging and optimizing charging efficiency.

In some cases, a hybrid solution that includes both grid charging and solar charging might be the best approach. This way, the solar panels can provide power and charge the batteries during the day, and if additional power is needed, the grid can supplement or recharge the batteries.

4. Gather Necessary Tools and Materials

  • Aolithium batteries (12V or 24V based on your requirements)
  • Power Inverter
  • Battery cables (thick gauge)
  • Fuses and fuse holder
  • Battery box (for safety and protection)
  • Power strips or outlets
  • Wires, nuts, bolts, and other necessary hardware
  • Screwdriver set
  • Wire stripper and cutter
  • Safety gloves and goggles

5- Assemble the Battery Backup System

  • Place the battery inside the battery box. Make sure it is secure and won't move during transportation or handling.
  • Install the inverter near the battery. Ensure it is well-ventilated and in a safe location. Connect the positive terminal of the battery to the positive input of the inverter using thick battery cables. Use appropriate connectors and ensure a tight connection.
  • Connect the negative terminal of the battery to the negative input of the inverter in the same manner.
  • Install the fuse holder between the positive terminal of the battery and the inverter's positive input. This will protect your system from overcurrent.
  • Attach the fuses to the fuse holder, matching their ampere ratings with the inverter's requirements and your setup.
  • Install power strips or outlets on the output side of the inverter. This is where you will connect your devices during an outage.
  • Double-check all connections to ensure they are secure and properly insulated.

6- Test the Battery Backup System

Before connecting any appliances, turn off the inverter and ensure it is disconnected from the battery. Plug in a test load, like a lamp, into one of the power strips or outlets.

Turn on the inverter and check if the lamp receives power. Monitor the voltage on the inverter's display (if available) or use a multimeter to ensure the battery voltage remains within safe levels during the test.

7- Install the Battery Backup System

Find a suitable location for your battery backup system, preferably close to the appliances you want to power during outages. Mount the battery box and inverter securely using the appropriate hardware. Organize the cables and ensure they are not a tripping hazard or at risk of damage. Label the power strips or outlets to identify which ones are backed up by the battery.

Mistakes to be Avoided When A DIY Building a Home Backup System

· Inadequate Power Assessment

Avoid underestimating your power requirements during the planning stage. Failing to accurately calculate the power consumption of essential appliances and devices can result in a backup system with insufficient capacity, leading to a shorter backup runtime or the inability to power critical devices during an outage.

· Incompatible Inverter Selection

Choosing an inverter that doesn't match the battery voltage or lacks the required wattage capacity can lead to compatibility issues and inefficient power conversion. Incompatible inverters may not power your devices correctly or might cause damage to them.

· Improper Wiring and Connections

Inadequate wiring, loose connections, or using incorrect connectors can cause voltage drops, overheating, and potential fire hazards. Ensure all connections are tight, properly insulated, and appropriate for the current load.

· Neglecting Safety Precautions

Safety should always be a priority when working with electricity. Failing to follow safety precautions, such as working with the system turned off and wearing appropriate safety gear, can lead to electrical accidents and injuries.

· Overestimating System Capabilities

DIY home backup systems have limitations based on the battery capacity and inverter size. Avoid overestimating their capabilities to avoid any mishap.

Maintenance and Safety Tips

  • Regularly inspect the battery and inverter for any signs of damage or wear.
  • Keep the battery terminals clean and free from corrosion.
  • Check the battery water level (if applicable) and follow the manufacturer's maintenance guidelines.
  • Test your battery backup system periodically to ensure it functions correctly.’

Frequently Asked Questions

Which battery backup is best for the home?

The best battery backup for a home depends on various factors like power requirements, budget, and desired lifespan of the system. Among several options available in the market, Aolithium batteries are considered one of the best for their high energy density, long cycle life, and excellent depth of discharge. They offer a combination of performance, efficiency, and reliability that makes them an excellent choice for home backup systems.

How big of a battery backup do I need for my house?

The size of the battery backup you need for your house is determined by your energy consumption. To calculate this, add up the power ratings (in watts) of all the devices you'd want to run during a power outage and for how long (hours). This will give you your total energy requirements in watt-hours (Wh). For example, if your total load is 1,000W and you want to run it for 8 hours, you'd need an 8,000Wh or 8kWh battery. But always plan for a bit extra capacity to account for energy losses during the conversion and aging of the battery.

How long will a battery run a house?

The duration a battery will run a house depends on the capacity of the battery and the total power draw of the home. If you know the capacity of your battery (in kWh) and your home's power consumption (in kW), you can divide the battery capacity by the power consumption to get an estimate of how long your home can run on the battery. For example, a 10 kWh battery could theoretically power a home drawing 1 kW for about 10 hours. However, it's important to note that this is a simplified calculation, and actual backup time can be affected by many factors, such as the efficiency of the inverter, battery DoD, and variability in your power usage.


In conclusion, building a home battery backup system plays an integral role in ensuring a continuous power supply and, thereby, safeguarding the comfort and functionality of your home during power outages. This can prove particularly crucial in areas prone to natural disasters or unreliable grid power.

By understanding the essential components of the home backup system, you can do it all by yourself efficiently. Investing in a good battery system by Aolithium, you can benefit from it in the longer run.  

As a final piece of advice, remember that while cost and performance are important factors, safety should never be compromised. Always follow the manufacturer's guidelines for installation and operation, and consider seeking professional advice if needed. Take control of your power supply today and experience the resilience and independence that a home battery backup system can provide.



This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.