Power Outages?
You Won't Even Notice.

A typical full-size refrigerator draws about 150W. GenBox 1200S delivers 1,200W continuous output, so you've got plenty of headroom.

On a single 1.3 kWh charge, expect up to 6-8 hours of runtime for a full-size refrigerator. Smaller refrigerators (like college dorm fridges) can run even longer—up to 12 hours or more.

Want to extend that? Use the Eco Smart Cycle feature in the app to program on/off intervals. This can extend your runtime to approximately 18 hours—about 3x longer than continuous operation.

Need even more? Stack up to 4 expansion batteries for 5.5 kWh total (enough for multi-day outages). Or connect a 400W solar panel—it can actually charge the battery while your fridge continues running.

Yes. Genuinely.

Mount GenBox on the wall behind your fridge (bracket included), or use the floor stand. Plug GenBox into your wall outlet. Plug your fridge into GenBox. Done.

No rewiring. No transfer switch. No electrician. If you can hang a heavy picture frame, you can install GenBox. Most people are up and running in about 15 minutes.

Absolutely. That's the whole point.

GenBox monitors your power supply 24/7. When it detects an outage, it switches to battery automatically in under 20ms—whether you're home, at work, on vacation, or asleep.

You don't press any buttons. You don't launch the app. You don't do anything. GenBox just works.

Yes, completely safe.

GenBox uses Lithium Iron Phosphate (LiFePO₄) battery chemistry—the most thermally stable and non-combustible lithium battery type available (the same type used in residential powerwalls).
It's certified to UL1642, UL1973, UN38.3, and FCC safety standards.

The Battery Management System protects against overcharge, over-discharge, and short circuits.

Unlike generators, there's no carbon monoxide, no fuel storage, no hot exhaust. You can safely keep it in your kitchen, garage, RV, or apartment without any concerns.

Yes, and it's actually a great combination for extended outages.

Instead of running a noisy generator 24/7, use this strategy:

• Run your generator for 1.5 hours to fully recharge GenBox
• Turn off the generator and run silently on battery
• Repeat when GenBox needs recharging

You'll use way less fuel, eliminate overnight noise, and still have backup power for as long as you need. Best of both worlds.

GenBox is solar-ready out of the box.

It has a built-in MPPT charge controller that accepts up to 400W of solar panels (11-50V DC). Just connect your panels and GenBox recharges from the sun—no external controller needed.

Here's the powerful part: With a 400W solar panel, you can actually charge the battery while your refrigerator continues running. Since a typical fridge only draws about 150W and the panel produces up to 400W in good sunlight, you'll have a net positive charge. This gives you indefinite backup power as long as the sun shines.

Even if you don't have solar now, you have the option to add panels later.

The GenBox app (iOS/Android) gives you three main features via Bluetooth:

Real-time monitoring – See your battery level, power usage, and estimated runtime

Eco Smart Cycle – Program custom on/off intervals to conserve battery during multi-day outages (you set the timing—for example, run 2 hours, rest 4 hours, repeat)

Battery health settings – Customize charge limits to maximize the battery's 10+ year lifespan (just like your phone's battery optimization)

Important: GenBox's automatic UPS backup works perfectly without the app. The app just gives you extra visibility and control when you want it.

GenBox is expandable.

You can stack up to 3 additional battery modules (GenBox 1.3B) to reach 5.5 kWh total capacity. They connect to the main unit via the parallel battery port and stack securely with included brackets.

This means you can start with one unit and expand later as your needs grow—without buying a whole new system.

GenBox includes fast-charging technology that fully recharges the 1.3 kWh battery in approximately 1.5 hours from a standard wall outlet.

That's 3-5x faster than most competing batteries (which can take 4-8 hours to recharge).

Fast recharge means:

• Less time running a generator to recharge
• Quick recovery between outages
• More flexibility during extended power failures

You can also recharge via solar (up to 400W) or from your car's 12V outlet (takes about 14-15 hours, but useful in emergencies).

GenBox 1200S includes a 3-year factory warranty covering defects in materials and workmanship, plus lifetime technical support.

If you ever have issues or questions, our support team is here to help. We stand behind our product and want you to have complete confidence in your purchase.