The awful news first. Blackouts are becoming extra common, with predominant outages now 10 times extra commonplace than they were in the mid-Eighties, in line with one look at. This worsening power state of affairs is the end result of getting older transmission grids and increasing extreme climate events induced by means of climate change.
Those power headaches come at a horrific time; we have extra devices and are operating from domestic greater than ever before, meaning our need for a constant and dependable supply of electricity is only growing.
Now the coolest news: in current years, there are many technological advancements in relation to battery backup answers, so much in order that many specialists are calling this the ‘golden age of batteries’. There is now a whole range of battery products throughout different segments of the market, all inexpensive and extra powerful than their predecessors.
So what battery backup answers need to you be looking at? Need to you get a UPS, Whole house UPS, solar generators, UPS, or something in between? We can help you discern that out. We’ll observe the professionals and cons of each choice, their expenses, after which recommend the fine ones for you to shop for.
In this page
Types of battery backup
Best battery backup by category
o Solar generators
o Whole house UPS
Here are the most popular types of battery backup. Choose the right device based on your needs.
1. UPS (Uninterrupted Power Supply)
Used for: Short-term backup power
We’ve all been there: you’re finishing up an important task on one of your devices when the power goes out. Whatever it was - a work project, an online form submission, or maybe even a video game - the power outage resulted in loss of unsaved data, and along with it all of your progress, your momentum, and the time it will take you to get back to where you were. Or even worse, there’s a surge of power that fries the power unit in your device, rendering it useless.
Enter the UPS, which is short for Uninterruptible Power Supply. It offers surge protection to multiple devices, protecting them during storms and brownouts. In the event of a power outage, it will keep them on long enough for you to finish what you’re doing, save your work (or play), and safely shut down.
UPS’s are especially useful in protecting servers, which can suffer hardware damage and data losses if there is voltage fluctuation or a blackout. They have been serving this purpose for many years now, and have been a common feature in homes and offices since the 1990s.
With the passage of time, UPS’s have become smaller, more powerful and, best of all, cheaper. You can also find UPS’s designed for different sub-purposes, for instance a mini-UPS or router-UPS. These are smaller UPS’s designed specifically to backup your WiFi router. They have a small, unobtrusive form factor and generally provide up to four hours of backup for a stand router. This is an easy way to ensure uninterrupted internet access for your mobile devices and laptops during a longer blackout.
A UPS is best if you:
2. Solar generators
Used for: Powering multiple appliances for several hours
Solar generators aren’t really generators at all - they’re actually portable battery storage systems. However, because they are used for the same purposes as traditional generators - that is, providing a steady source of backup power - the name ‘solar generator’ has stuck.
Solar generators offer a great deal of flexibility. In addition to being portable, they can be charged in many different ways:
There are other advantages that solar generators have over traditional diesel-powered generators. For one, they are completely silent. Furthermore, they usually come equipped with a large number of USB ports, 12V DC sockets, and 120V AC power outlets, making them a more versatile option.
Once fully charged, solar generators offer between 0.5 kilowatt-hours (kWh) and 2 kWh, depending on the size and model. Battery backup of 0.5 kWh will allow you to run small emergency items like a modem, lights, and small fans for several hours. With 2 kWh of battery backup, you have a couple of options: power the aforementioned small emergency items for as long as a day, or you can opt for a few hours but with additional things like a fridge and TV on, as well.
Just note that if you want to use your solar generators for home backup power - as opposed to their typical outdoor uses - you’ll need to connect it to your electrical panel via a generator transfer switch, same as you would with a traditional diesel-powered generator.
Your other option is to simply carry the solar generator to where you want to use it.
A solar generator is best if you:
3. Whole-home batteries
Used for: Powering your house for hours, or even days
A whole-home battery is a battery system that’s capable of powering an entire home. They are designed to handle high instantaneous power loads, meaning they can run several large appliances simultaneously. They also have large storage capacities, which enables continuous operation for many hours at a time.
Whole-home batteries are often called ‘solar batteries’, since it is most common to use them in conjunction with a solar panel setup. The reason for this is simple: when a solar battery is purchased with solar panels, it automatically qualifies not just for the 26% federal solar tax credit, but for a variety of state and and other local incentives, too - most notably California’s SGIP rebate program.
In 2022, most people considering whole-home batteries are looking at smart lithium battery solutions such as a Tesla Powerwall or LG Chem Resu. These battery products are small, efficient, and durable. This is especially true when you compare them to older battery technology like lead acid batteries. (Lead-acid batteries do still have some use cases; we have an article comparing different battery types).
I should point out here that it is technically possible to get a solar battery without actually installing solar panels. You could, for instance, set up a LG Chem Resu to charge using grid power, thus providing you a backup option for when there’s a power outage. This approach, however, has some major drawbacks. Without the 26% tax credit and other incentives, solar batteries, which are already costly, become even more expensive. Furthermore, without solar panels, you’re left without a convenient method to charge the batteries in the event of a prolonged power outage.
A whole-home battery is best if you:
Calculate your solar panel payback period
The best battery backup products to consider
The table below shows our top recommendations for each category of battery backup. Scroll down to see a short review of each product.
There’s not a whole lot to differentiate the different UPS’s on the market, but here are two products from two leading UPS brands that caught our attention.
1. APC Back-UPS BE600M1
APC has a wide range of UPS products; the Back-UPS BE600M1 is their budget option. Image source: APC
Price: $89.99 Buy Now
Key features: Small form factor, seven 120V sockets, 1.5A USB port
Capacity: 330 watts / 600 VA
This is a wallet-friendly model from APC, which is one of the top manufacturers of UPS’s. Users are happy with its low price, compact size, how it’s lightweight, and its good socket layout. It also has an easily replaceable battery.
The 600 VA won’t give you a ton of backup power, but it’s enough to allow you to safely wrap up your work and shut down your PC. It works silently, without the annoying beeps that you sometimes hear from cheaper UPS’s.
Five of the seven sockets are also surge protected, which means that this unit offers a cheap way to protect your electronics.
A minor quibble to be aware of: some users also complain that the LED power indicator is too bright, making the unit unsuitable for a bedroom.
All said, this is a good option if you want a cheap UPS for the house.
2. CyberPower CP1500PFCLCD
The CyberPower CP1500PFCLCD offers plenty of juice for power-hungry appliances. Image source: CyberPower
Best: Power use
Price: $238.00 Buy Now (Amazon)
Key features: Sine waveform, 12 120V outlets, Type A & C USB ports (3.1A shared)
Capacity: 1500 VA / 1000W
CyberPower is another established player in the UPS market. The CP1500PFCLCD is aimed at power users, and it looks the part: it’s got a large, mini-tower form factor, with a prominent colored LCD display on the front.
On the back it features 12 sockets, half of them connected to the battery and the remaining ones simply surge-protected. It also adds ethernet line protection, a handy extra.
At 1500 VA, it offers more than twice the backup power of our budget option. Even more impressive, when tested by the NYTimes Wirecutter team, it was found to put out 930 watts, which should be enough to handle even the biggest home office or home entertainment setups.
Best solar generators
Here are the solar generators we recommend to our readers.
1. Jackery Explorer 500
Jackery’s Explorer 500 is a great mid-sized solar generator that won’t break the bank. Image source: Jackery
Price: $499.99 Buy Now
Key features: Very powerful despite its small size, ideal for traveling, serves as a great emergency backup power supply
Capacity: 518 Wh
The Jackery Explorer 500 is an all-in-one solar generator that’s a great option if you’re looking for something that’s small and portable.
It includes a high-quality, pure sine wave inverter, as well as an MPPT charge controller to ensure your battery recharges safely. Its compact size makes it great for traveling. Not only is it great for camping and boating trips, it is a great emergency backup power supply, as well.
When paired with a 100-watt solar panel, the Explorer will charge in 9.5 hours. The portable power station includes three USB ports, an AC power outlet, and a 12 volt car charger. It also has an LCD display to help you monitor the charge and discharge status of your battery pack.
2. Goal Zero Yeti 1400 Lithium with WiFi + Boulder 100 Briefcase Solar Kit
The Goal Zero Yeti 1400 and Boulder 100 Briefcase Solar Generator Kit’s versatility makes it our pick for best overall solar generator. Image source: Goal Zero
Price: $2,199.95 Buy Now
Key features: Lightweight, can be charged by solar panels or wall outlet, includes an app that helps you monitor your energy use
Capacity: 1,425 Wh
Goal Zero is one of the most popular solar generator manufacturers around. Their Yeti 400 is a great choice if you’re looking for something to back up your home in the event of a power outage. It has 10 total ports that guarantees you’ll be able to power all of your devices. It can even power a fridge for 32 hours!
Despite having 1,425 Wh of storage capacity, the Yeti 1400 lithium ion battery weighs just 43.7 pounds. So besides being a great source of emergency power, it’s portable enough to be brought on long camping trips.
The Yeti 1400 can be charged using solar panels or with a wall outlet. A 100-watt solar panel is recommended if you will only be using about 10-20% of the energy stored within the battery. If you anticipate your power consumption to be more than 20%, consider getting additional panels.
You can monitor exactly how much energy you use from the battery with the Goal Zero app when you are connected to WiFi.
3. Point Zero Energy Titan 1000 solar briefcase generator kit
Point Zero Energy’s Titan 1000 briefcase solar generator kit is one of the most powerful solar generators on the market, making it great for home power backup. Image source: Point Zero
Best: For home power backup
Price: $5,645 Buy Now
Key features: Very powerful, includes built-in inverter and charge controller, foldable solar panels, high-powered AC output charger allows for quick charging
Capacity: 2,000 Wh
Point Zero Energy's Titan 1000 briefcase kit is a top choice among homeowners looking for emergency backup power due to its large size.
With 1,000 watts of solar panels and a battery capacity of 2,000 Wh, this is one of the most powerful portable solar generators on the market. It also includes a built-in inverter and charge controller. The Titan solar generator system can be paired with more batteries if needed.
The Titan solar generator has a maximum continuous discharge of 100A, or approximately 2500 watts. This means that it can handle large appliances such as a fridge or washing machine - but not an electric kettle or air conditioner. This means that the Titan is best suited to support critical loads in your house.
When the sun is out, the 1,000-watts of solar panels can run your electronic devices without draining the battery, and it’s able to charge in as little as 4 hours thanks to its high-powered AC output charger.
The Titan 1000 battery weighs in at 35 pounds and includes five foldable monocrystalline solar panels, so it can be used on the go but is also well suited as a home power backup system.
Best whole-home batteries
1. LG Chem RESU Prime battery system
The LG Chem Resu Prime is a DC-coupled battery, offering backup power with minimal efficiency losses. Image source: LG Energy Solution
Best: DC-coupled battery
Price: $11,000 to $15,000 installed
Capacity: 10 & 16 kWh
The LG Chem RESU battery is a lithium-ion battery that captures solar energy and stores it for later use in residential settings. In 2021, LG Chem introduced new higher-capacity RESU Prime batteries in order to serve the needs of the marketplace affected by power outages and to more directly compete with Tesla.
The LG Chem RESU Prime can be used as either whole-home backup during outages or as a day-to-day battery pack, meaning it charges and discharges over a traditional 24-hour period.
The RESU Prime comes in capacities of 10 and 16 kWh, and can be installed in pairs to create whole-home backup for even larger homes that use a lot of electricity.
LG’s RESU Prime batteries come with a warranty that ensures they will retain at least 70% capacity after a 10-year period, which matches the warranty offered by both sonnen and Tesla.
The average cost of the LG Chem system, including supporting equipment and installation, ranges from $11,000 to $15,000 - depending on your location, battery capacity, and installation charges.
LG Chem batteries are DC-coupled and can only be used for backup with a central string inverter or by adding an additional battery inverter, which adds expense and complexity to the installation. That said, DC-coupled batteries are more efficient than their AC-coupled counterparts, such as the Tesla Powerwall.
2. sonnenCore battery