What Are the Best Home Battery Backup Systems of 2022

Isn’t it a great idea to cut your electricity bill by using a whole home battery backup system? Absolutely, it is!

Especially, if you’re living in a sunny state, you can capture clean energy through solar panels and use it to run your daily appliances. No doubt, a battery backup system is way more beneficial to you. Therefore, you should always prefer it to meet your home energy demands.

However, choosing the best home battery backup system might be challenging. For your assistance, we’ve discussed fifteen home backup batteries in this article.

So, stay connected till the end to grasp maximum information!

Related Article: How Many Batteries Are Needed to Power a House?

What is a Home Battery Backup System?

The battery system having access to your home’s circuits to run required appliances during an outage is known as a home battery backup system. You can decide which home appliances you want to power using a battery backup system. Usually, it is recommended not to run AC, electric stoves, or EV chargers on this system. On the other hand, it can effectively power a refrigerator, entertainment, lighting, and other convenience outlets.

Home Battery Backup System

How Do Home Backup Batteries Work?

Typically, home backup batteries are connected to the house’s electrical distribution system. It is better to charge the battery with a solar PV system, yet, you can also charge it by drawing power from the grid electricity. Once the energy is stored in the battery you can use it during an outage. Generally, these batteries can power your home for about 24 hours, depending upon the appliances you are using.

Whole Home Battery Backup

What to Look for in Home Battery Storage?

Here are some crucial parameters you must consider while buying a whole house battery backup system:

Battery Capacity

The foremost step is to decide what size you need to power the required home appliances. The best way is to check your electricity bill to know how much kWh your home consumes in a day. Generally, a household consumes 20kWh in 24 hours, yet it may fluctuate according to the climate. Therefore, choose the battery capacity accordingly.

Power Rating

The power rating means the amount of power you can consume from the battery at a specific time. If your battery features a large capacity but the power rate is low, it’s worthless for you. You need enough power output to run the required household appliances. Thus, it’s better to prefer a battery with more than a 2.6kW power rate.

AC or DC-coupled

Home batteries are either AC-coupled or DC-coupled, both perform differently. The AC-coupled battery uses two inverters one for the battery and the other for the solar panel. However, DC-coupled batteries use only one inverter. Typically, DC-coupled batteries are considered more efficient than AC-coupled batteries.

Depth of Discharge (DoD)

Depth of discharge is measured by percentage. It is the energy amount that you can safely use without the risk of battery degradation. For instance, lithium-ion batteries can safely discharge about 80 to 90% while flow batteries can discharge 100%.

Round-trip Efficiency

Round-trip efficiency is another factor to look for before buying a battery. It measures how well your battery and inverter convert and store electricity. In short, it lets you know the number of electricity units you’ll receive from your battery for each electricity unit put into it.

Battery Life

It will be quite disappointing if your battery drops significantly after a few months. Thus, you should go for a battery offering a longer lifespan. Usually, lifespan is represented by the number of cycles and years. One cycle indicates one complete discharge and recharge. According to it, you should prefer one over 5000 cycles.

Stackability

Another factor to look for is the stackable design of the battery. This will help you in stacking more than one battery in an area and boost the power. Moreover, this modular design offers it to adjust almost every application.

Compatibility

You should also check for the compatibility of the battery before purchasing. Compatible batteries are manufactured by a third party instead of a licensed company or brand.

Warranty

Before getting a home battery make sure it offers a pretty much years warranty. More a battery offers a warranty it is reliable. Normally, 10 years warranty is considered favorable.

Chemistry

Chemistry of the battery refers to the type of battery, such as the lithium-ion battery, lead-acetate battery, or flow battery. Mostly, lithium-ion batteries are considered best for their high energy efficiency, longer lifespan, and eco-friendly. They cost higher than lead acetate batteries for their outstanding performance.

Top 15 Home Battery Backup System Providers in 2022

Tesla Powerwall

Tesla Powerwall is the top-rated AC lithium-ion home battery for its high storage capacity and power output. It possesses an inverter that ensures its use in any house with a solar system. Additionally, it has ten expansions which offer you to choose as many batteries as you need to run your household.

Tesla Powerwall

Specifications
● Battery capacity: 13.5 kWh
● Continuous Power: 5.8kW
● Peak Power: 10kW
● Warranty: 10 years
● Depth of Charge: 100%
● Round Trip Efficiency: 92.5%
● Chemistry: NMC
● AC or DC coupled?: AC coupled

Pros
● Decreases the reliance on the grid.
● It operates at 70% of its original capacity even after the warranty ends.
● Helps to lower your electricity bill.

Cons
● It is pretty expensive.
● Small energy is lost due to power conversions as it is an AC-coupled battery.

BYD B-BOX Battery Backup System

The B-BOX batteries are the safest lithium iron phosphate batteries as there are lower chances to undergo thermal runaways. Moreover, they offer higher power output which allows less electricity to draw from the grid. You can increase the capacity by direct parallel connection.

BYD B-BOX Battery Backup System

Specifications
● Battery capacity:  13.8 kWh
● Power rating: 12.8 kWh
● Warranty: 10 years
● Chemistry: Lithium-iron phosphate
● Round trip efficiency: 96.5%
● AC or DC-coupled: DC-coupled batteries

Pros
● It is convenient to install.
● Features modular design and emergency stop function.
● Suitable for residential, commercial, and industrial use.

Cons
● It is designed as a DC battery making it difficult to pair with existing solar systems.

LG Energy Solution Home Battery

One of the best solar batteries for home is LG Chem lithium-ion batteries. You may install them both as in-grid and off-grid. Its compact size and ease of installation make it ideal for users.

LG Energy Solution Home Battery

Specifications
● Battery capacity: 9.6 kWh
● Power rating: 7 kWh
● Warranty: 10 years
● Depth of Discharge: 95%
● Chemistry: NMC
● Round trip efficiency: 94.5%
● AC or DC-coupled: DC-coupled batteries

Pros
● Offers greater integration with the solar inverters.
● It is modular so you can add more batteries to increase power output.
● It is lightweight and safe to use.

Cons
● Lack of monitoring capability.

Panasonic Evervolt Home Battery Storage

Panasonic Evervolt home battery delivers continuous clean energy of 4.8kWh at 25 A current. It features an app through which you can monitor and control the battery. Further, it provides an almost 6 hours backup facility.

Panasonic Evervolt Home Battery Storage

Specifications
● Battery capacity: 11.4 kWh
● Power rating: 4.6 kWh
● Warranty: 10 years
● Depth of Discharge: 100%
● Chemistry: NMC
● Round trip efficiency: 90%
● AC or DC-coupled: DC-coupled battery

Pros
● Capable of stacking up to 3 units.
● Offers you to sell unused energy.
● Compatible with both new and old solar panel systems.

Cons
● Only selective companies allow selling unused power.

Flex Energy Storage System

Flex energy storage system provides you with enough energy to power your home during an outage. It is considered the best solar generator, an alternative to standby generators. Additionally, it does not feedback much solar energy to the grid.

Flex Energy Storage System

Specifications
● Battery capacity: 5kWh to 10kWh
● Warranty: 10 years
● AC or DC-coupled: AC-coupled battery

Pros
● Able to backup 5 kWh to 10 kWh of power.
● Suitable for meeting the demands of household appliances.
● Performs as both on-grid and off-grid.

Cons
● It is not much popular in-home batteries.

ETEKWARE Powerwall

ETEKWARE is one of the leading manufacturers and suppliers of lithium-ion home battery backup systems in China. ETEKWARE Powerwall is capable of supporting 15 units in parallel. Plus, it comes with awesome package accessories, i.e, M8 cable, optional smart hybrid inverter, and off-grid inverter.

Besides, the ETEKWARE residential solar battery solution offers you lots of benefits including a high degree of flexibility, large battery capacity, compact size, easy installation, safety, and more. Best of all, ETEKWARE is a lithium battery company with years of experience in manufacturing custom lithium batteries, and battery packs for many unique applications.

ETEKWARE Home Battery Backup System

Specifications
● Battery capacity: 5-12kWh
● Warranty: 10 years
● Depth of Charge: 100%
● Round Trip Efficiency: 98%
● Chemistry: LFP (lithium ferrous phosphate)
● AC or DC coupled?: Both

Pros
● Pretty compact size.
● Quick and easy to install.
● Features LCD intelligent monitoring system.

Cons
● Doesn’t provide much usable power.

Orison Tower

Orison batteries are famous for their remarkable free-standing floor lamp design. It provides emergency backup. Moreover, it shifts your purchases of power automatically from the utility company. Consequently, you can power your house from the electricity grid when energy rates fall.

Orison Tower

Specifications
● Battery capacity: 2.2kWh
● Warranty: 10 years
● Chemistry: NMC
● Round trip efficiency: 90%
● AC or DC-coupled: AC-coupled battery

Pros
● You can install it yourself.
● Features a speaker and wireless charger. Thus, you can enjoy music and charge your phone.
● Possesses LED lights to light your house.

Cons
● Offers lower power output as compared to other batteries.

Sonnen Solar Battery

Sonnen solar battery features a pretty flexible design which allows it to work both on AC and DC coupled systems. Power your house from this intelligent, safe, and reliable battery storage. Also, it is pretty durable.

Sonnen Solar Battery

Specifications
● Battery capacity: 10 kWh
● Power rating: 8 kWh
● Warranty: 10 years
● Depth of Discharge: 90%
● Chemistry: lithium iron phosphate
● Round trip efficiency: 81.6%
● AC or DC-coupled: AC-coupled battery

Pros
● Has higher round trip efficiency.
● Perfect choice for off-grid use.

Cons
● It costs more than a Tesla Powerwall.

Enphase Encharge Battery Backup System

Enphase Energy is best known for its micro-inverters. They have developed their battery storage system which is named Enphase Ensemble. Currently, they are offering two battery models which are Encharge 3 and Encharge 10.

Their household battery system possesses an Empower Smart Switch that enables it to work with on-grid and off-grid functions of storage and solar.

Enphase Encharge Battery Backup System

Specifications
● AC or DC Coupled: Both AC and DC coupled batteries.
● Battery Capacity: Encharge 3(3.36 kWh) and Encharge 10 (10.8kWh)
● Power Rating: Encharge 3(1.28kW) and Encharge 10(3.84 kW)

Pros
● It’s pretty lightweight and small in size. Therefore, it’s easy to carry.
● It’s quite expandable with lithium battery modularity for up to 4 storage systems.
● Easy to use with home appliances.

Cons
● It’s pretty expensive.

SimpliPhi Power Battery Backup system

Simpliphi power battery is a non-toxic power source made up of lithium Ferro phosphate. It is dominant due to its higher round trip efficiency.

SimpliPhi Power Battery Backup system

Specifications
● Battery capacity: 15.2 kWh
● Warranty: 10 years
● Depth of Discharge: 80%
● Chemistry: lithium Ferro phosphate
● Round trip efficiency: 98%
● AC or DC-coupled: DC-coupled battery

Pros
● Can bear extended temperature,
● Suitable for both micro-inverters and string inverters.

Solaredge Home Battery

SolarEdge home battery offers 9.7kWh of usable power, if it is not enough for your household you may install extra batteries. There is no fan to cool the battery, instead, natural air movement keeps it cool. This also prevents you from battery noise.

Solaredge Home Battery

Specifications
● Battery capacity: 9.7 kWh
● Power rating: 5 kWh
● Warranty: 10 years
● Depth of Discharge: 100%
● Chemistry: NMC
● Round trip efficiency: 93.3%
● AC or DC-coupled: DC-coupled battery

Pros
● The theIP55-rated battery is suitable for outdoor installation as it is protracted from water and dust.
● It features temperature sensors that activate built-in fire extinguishers.

Cons
● Not suitable for off-grid use.
● Backup is only offered with a solaredge energy hub inverter.

Generac PWRcell

The Generac PWRcell is a whole-home solar battery backup system. It stores energy produced by solar panels and serves with backup power in a grid outage.

The common Generac power cell provides 9kWh storage capacity by the contribution of three lithium-ion battery modules with a 3kWh capacity.

Generac PWRcell

Specifications
● Battery Capacity: 9-18 kWh
● Power Rating: 6-12 kW
● Warranty: 10 years
● Chemistry: Li-NMC
● Round trip efficiency: 96.50%
● AC or DC coupled: DC-coupled battery

Pros
● It’s suitable for most solar panels.
● You may monitor it by the intuitive app.
● The modular design helps to fit variable home sizes.

Cons
● It’s pretty costly.

Vottery Powerwall

The vottery home energy storage system may store up to 6kWh. It stores energy generated by solar panels. If you need more energy, you may connect up to 10 units in a parallel fashion.

Specifications
● Battery Capacity: up to 120Ah
● Power Rating: 5kWh
● Warranty: 10 years
● AC or DC coupled: DC-coupled battery

Pros
● It’s pretty affordable to other home storage systems.
● You may connect up to 10 units to get 60kWh.
● It constitutes modules with variable capacity and output options.

Cons
● Its control program contains an abrupt learning curve.

Enphase IQ Battery 10T

The Enphase IQ Battery 10T consists of three bases Encharge 3T storage units. It cools down quite passively which shows that it lacks any moving part. You need to install it professionally to get perfect outcomes.

Specifications
● Battery Capacity: 10.5kWh
● Power Rating: 3.84kW
● Warranty: 10 years
● Chemistry: LFP(lithium ferrous phosphate)
● Round trip efficiency: DC(96%) and AC(89%)
● AC or DC coupled: Both

Pros
● Suitable for small homes.
● You may control it through a mobile app.
● Capable of forming a grid for backup operations.

Cons
● There is no expandable design to increase capacity.

BSLBATT B-LEP Series

BSLBATT is a China lithium-ion battery manufacturer which is mainly originated as a manufacturer of lead-acid batteries. With the advancement of lithium-ion technology, they focused on developing LiFePo4 batteries.

They mainly work on formulating powerwall batteries, Rack-mounted batteries, and high voltage battery systems with variable capacity.

Specifications
● Battery Capacity: 2.5 kWh to 20kWh
● Chemistry: LFP(lithium iron phosphate)

Pros
● It can be used for solar storage as well as off-grid emergency power.
● BSLBATT supports custom lithium-ion batteries.
● These batteries possess high flexibility.

Cons
● BSLBATT isn’t that well-known.

Which Battery Backup System is right for you?

Undoubtedly, it’s not an easy task to choose one battery from hundreds of batteries on the market. The ideal way is to first know your household energy demands and what features you must need in your home battery. Here are some top products with their key features, that will help you in finding a perfect match;

Choose this battery……. If you need this feature……
Tesla Powerwall High energy output for running more appliances in your home.
BYD B-BOX battery backup system Safe use without any risk of thermal runaway or fire.
LG Chem lithium-ion batteries Both on-grid and off-grid use.
Votteryy Powerwall Great performance at an affordable price.
Orison Tower A pretty easy installation process that you can do yourself.
Panasonic EverVolt. Modular designed battery to meet the increasing power demand.
ETEKWARE Powerwall Ultra-long service life, higher capacity range, high flexibility, and support custom design.

Home Battery Storage FAQs

Are home battery backups worth it?

A home battery backup system helps you to use solar energy 24/7 and prevents you from paying heavy electricity bills. During daylight, the energy is stored in your battery and lately used at night. You can easily run your maximum household appliances on this home battery in case of an outage.

How much does a home battery backup system cost?

Commonly, an average-sized battery backup system costs between $10,000 and $20,000. However, this price doesn’t include installation expenses.

How many Ah batteries do you need for your house?

Well, it entirely depends upon the energy demand and how many appliances you need to power at a specific time. Say you want to use a 12V 200 Ah battery. So in such a case, you’ll need two batteries to power your house for about 7 hours.

Can I have battery storage without solar?

Of course, yes, you can use battery storage without installing solar panels in your house. The battery may catch power from the grid to charge and use the power during outages. As a result, it saves your budget and improves energy efficiency.

Conclusion

Finally, you are there with enough knowledge about home battery backup systems. Now, you can easily make a just decision for yourself when buying the best home battery. However, you are suggested to consider the above-mentioned top products for a better experience.

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