A power outage can bring a small business to a stop in minutes. A restaurant can lose refrigeration, a repair shop can lose access to tools, and a service business can lose its internet, computers, and charging equipment.
That is why choosing reliable backup power, a solar power generator, a whole home power generator, or portable backup power should start with one simple question: What equipment do you actually need to keep running?
In this guide, we will answer that question with three real-world small business backup power setups. We will look at the Powerhouse Gen 2 Power Station and Lithium 3600 Power Station, compare their output and battery capacity, and show which system makes more sense for restaurants, workshops, mobile businesses, and other small operations.
Which backup power system is best for a small business?
The best backup power system depends on your equipment, not just the size of your business.
A small business might only need to keep a few essential devices running during an outage. Another may need to power refrigerators, tools, lights, computers, and other high-demand equipment at the same time.
Start by listing the equipment you cannot afford to lose power to. Then check the wattage of each device. Add the equipment you expect to run at the same time.
For example, a business may need power for:
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Refrigerators or freezers
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Computers and monitors
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Wi-Fi routers and networking equipment
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LED lighting
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Battery chargers
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Power tools
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Small appliances
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Point-of-sale equipment
You also need to think about startup power. Equipment with motors, such as refrigerators, compressors, pumps, and some power tools, can briefly need more power when they turn on.
The important numbers are power output and battery capacity.
Power output, measured in watts, tells you how much equipment you can run at one time. Battery capacity, measured in watt-hours, tells you how much stored energy you have.
A simple way to think about it is this: watts determine what you can run, while watt-hours help determine how long you can run it.
When should a small business choose the Powerhouse Gen 2?
The Powerhouse Gen 2 is the better choice when your business needs more power at one time or needs 120V/240V split-phase output.
The current Powerhouse Gen 2 provides 7,200W of continuous output, up to 14,400W peak output, and 4,800Wh of battery capacity. It can provide both 120V single-phase and 240V split-phase power, making it a better fit for higher-demand equipment and larger backup setups.
It also supports up to 2,000W of solar charging, 1,000W of wind charging, and 1,300W of AC charging. The system can be expanded with Power Pods for more battery capacity.
For a fixed business location, another advantage is the ability to connect the Powerhouse Gen 2 to compatible transfer switches. This can make it easier to back up selected circuits instead of running extension cords throughout the business.
This makes the Powerhouse Gen 2 a strong fit for businesses such as restaurants, workshops, repair shops, larger retail spaces, and other locations with several important loads running at once.
Learn more about the Powerhouse Gen 2 Power Station
When is the Lithium 3600 the better option?
The Lithium 3600 makes more sense when you want strong backup power in a smaller, more mobile package.
It provides 3,600W of continuous power and up to 7,200W of peak power. It uses a 3,072Wh LiFePO₄ battery and provides 120V single-phase output. Nature’s Generator also rates the battery for more than 3,000 cycles, with more than 70% capacity after 3,000 cycles.
The Lithium 3600 can accept up to 2,400W of solar input, making solar charging useful when grid power is unavailable for longer periods. It also supports AC and wind charging.
Mobility is another major difference. The Lithium 3600 weighs about 97 pounds, so it is much easier to move between locations than a larger whole-home-style system.
That makes it a practical option for service businesses, smaller shops, mobile production teams, outdoor vendors, contractors, and businesses that need backup power in different places.
See the Lithium 3600 Power Station
What would a small restaurant backup power setup look like?
A small restaurant is a good example because refrigeration and business equipment may need to stay on even when cooking equipment does not.
Imagine a neighborhood Mexican restaurant with two refrigerators, a freezer, POS equipment, Wi-Fi equipment, LED lights, an exhaust fan, and a few countertop appliances.
An example load could look like this:
These are examples only. Actual equipment wattage can be very different, so always use the rating shown by the manufacturer.
For this type of business, the Powerhouse Gen 2 gives you more room. Its 7,200W continuous output allows more equipment to operate at the same time without getting as close to the system's maximum output. Its 120V/240V capability can also help with compatible higher-voltage equipment.
The Lithium 3600 can still work well when the restaurant focuses on its most important equipment. Instead of trying to run the entire kitchen, you could prioritize refrigeration, lighting, POS systems, internet equipment, and selected smaller appliances.
For many businesses, that is the smarter backup plan.
How should a workshop choose between the Powerhouse Gen 2 and Lithium 3600?
Workshops need a little more planning because power tools can have high startup demands.
Consider a small woodworking or repair shop using:
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LED lights
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A laptop
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Battery chargers
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A grinder
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A shop vacuum
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A small air compressor
An example operating load could reach around 3,000W to 3,500W before startup demand is considered.
The Lithium 3600 can handle a setup like this when the equipment is used selectively. A business could avoid running the grinder, vacuum, and compressor at the same time and instead use the power station for one larger tool plus smaller loads.
The Powerhouse Gen 2 is a better fit when several tools need to operate together or when the shop has heavier equipment. Its 7,200W continuous output provides significantly more headroom.
This is an important buying point: do not choose a power station based on the largest tool in your shop alone. Look at how your team actually works and which tools are likely to run at the same time.
Which system is better for a mobile or service business?
For businesses that move from one location to another, the Lithium 3600 has a clear advantage.
A mobile repair business, production team, contractor, or outdoor vendor might need to power laptops, monitors, lights, phone chargers, camera equipment, battery chargers, and small tools.
A setup using 800W to 1,500W at a time would leave a comfortable amount of power below the Lithium 3600's 3,600W continuous output.
Customer feedback also shows how owners use the Lithium 3600 in real situations. Recent Walmart reviews mention using it for refrigerators, lights, internet equipment, and essential appliances during outages. One customer also highlighted the system's solar charging and expandability.
That kind of feedback is useful because it shows the difference between a product's specifications and everyday use.
For a mobile business, being able to take the power station where it is needed can be more valuable than having the highest possible output.
Can you use solar charging during a business outage?
Yes. Both systems can be paired with solar charging, which can help extend backup power when the grid is down.
The Powerhouse Gen 2 accepts up to 2,000W of solar input, while the Lithium 3600 accepts up to 2,400W.
This matters during longer outages because your battery is not your only source of energy. Once solar panels are producing power, that incoming energy can help recharge the system while your business continues using electricity.
For example, a shop may use stored battery power during the morning, then use solar production during the day to help replace some of the energy used.
Solar charging will vary depending on sunlight, panel configuration, weather, and the equipment being powered, so it should be viewed as part of an overall backup plan rather than a guaranteed replacement for grid power.
How much battery capacity does a small business really need?
There is no single battery size that works for every business.
A useful starting point is:
Runtime in hours ≈ battery capacity in watt-hours ÷ average power use in watts
For example, a 3,072Wh battery running an average 1,000W load would theoretically provide about three hours before losses and other factors are considered.
The actual runtime will be different because power stations have conversion losses and equipment does not always use a steady amount of power.
This is why reducing the load can make a major difference.
A business that runs only a refrigerator, router, lights, and POS system may get much longer backup time than a business running several power tools or heating appliances.
The Powerhouse Gen 2 starts with 4,800Wh of battery capacity and can be expanded with Power Pods for additional storage. The Lithium 3600 starts with 3,072Wh and can also be expanded with Power Pods.
How should you compare the two systems before buying?
The easiest way to compare them is to look at what each business actually needs.
The Powerhouse Gen 2 is the better choice for higher loads and 120V/240V applications. The Lithium 3600 is the better choice when portability and essential-load backup are bigger priorities.
What should a small business do before buying backup power?
Before choosing a system, make a simple equipment list.
Write down every device you want to keep running during an outage. Check its running wattage and, when applicable, its startup wattage. Decide which equipment can be turned off to save energy.
Then ask three questions:
What needs to stay on?
Focus on equipment that keeps your business operating or protects inventory and data.
What needs to run at the same time?
This helps you determine the output you need.
How long do you need backup power?
This helps you determine how much battery capacity you need.
For a permanent business location, also consider whether a transfer switch makes sense. Compatible transfer-switch options can help connect backup power to selected circuits more cleanly than relying entirely on extension cords. Nature’s Generator offers several transfer-switch options for different backup configurations.
Explore Nature’s Generator transfer switches
Which backup power setup is right for your business?
The right system comes down to your equipment and how you work.
Choose the Powerhouse Gen 2 when your business has larger combined loads, several pieces of equipment running at once, or compatible 120V/240V equipment. Its 7,200W output and expandable battery capacity make it a strong option for restaurants, workshops, repair businesses, and other fixed locations.
Choose the Lithium 3600 when you need dependable backup for essential equipment in a more portable system. Its 3,600W output, 3,072Wh LiFePO₄ battery, solar charging capability, and expansion options make it a practical fit for smaller shops, service businesses, mobile operations, and businesses that can manage their loads.
A good backup power setup does not have to keep every machine running. It needs to keep the right equipment running.
