What does it take to make a Brilliant Home™? For starters, we only partner with the world’s most experienced innovators like LG Chem to offer premium solar battery service that’s reliable, customizable, and affordable.

One of the world leaders in energy storage systems, LG Chem provides high-performing battery solutions for leading brands like Apple and Volvo. By expanding to solar energy storage, LG Chem uses its impressive pedigree to you bring a best-in-class battery at price point you can get behind.

 

Sunrun partners with LG Chem to build out the Brightbox battery, bringing you premium home battery storage. Here’s a Quick Rundown of the Battery:

  • Best-in-class Lithium-ion RESU Battery
  • Stores 9.3 kWh of usable energy & charges/discharges 5kW at maximum power
  • 10-Year Warranty
  • Winner of the EES Award at Intersolar Europe

By partnering with LG Chem, Sunrun’s battery backup service can’t be beat. It’s fully UL certified, and has gone through extensive testing to make sure it’s safe in your home. Unlike a generator, there are no dangerous fumes, toxic fuels, or bulky cords that put you and your loved ones at risk.

Sunrun’s Brightbox Specifications

Total Energy 9.8kWh @25ºC (77ºF)
Usable Energy 9.8kWh @25ºC (77ºF)
Voltage Range (Charge) 400 - 450 VDC
Voltage Range (Discharge) 350 - 430 VDC
Absolute Max. Voltage 520 VDC
Max Charge/Discharge Current [email protected] / [email protected]
Max Charge/Discharge Power 5kW
Peak Power (Only Discharging) 7kW for 10 sec.
Peak Current (Only Discharging) [email protected] for 10 sec. RS485
Communication Interface RS485
DC Disconnect Circuit Breaker, 25A, 600V Rating
Connection Method Spring Type Connector
User Interface LEDs for Normal and Fault Operation
Protection Features Over Voltage / Over Current / Short Circuit / Reverse Polarity
Scalability(Total Energy) Max. 2 in parallel (19.6 [email protected]ºC (77ºF), 6.6KW, 7kW for 10 sec.)
Installation Location Indoor (Wall-Mounted) / Outdoor
Operating Temperature 14 - 113ºF (-10 - 45ºC)
Operating Temperature (Recommended) 59 - 86ºF (15 - 30ºC)
Storage Temperature -22 - 131ºF (-30 - 55ºC)
Humidity 5% - 95%
Altitude Max. 6,562ft (2,000m)
Cooling Strategy Natural Convection
Safety Cell UL1642
Safety Battery Pack UL1973 / CE / RCM / TUV (IEC 62619)
Emissions FCC
Hazardous Materials Classification Class 9
Transportation UN38.3 (UNDOT)
Ingress Rating IP55

How Solar Battery Storage Technology Works

How does our top-notch home solar battery work? The solar battery stores excess power your solar panels produce during the day.

The battery charges depending on the size of the solar installation you have, and the amount of available solar power hitting the panels. On average, our battery hits full capacity by early to mid-afternoon. At full capacity, it can provide 10 or more hours of backup power. This resets once the sun comes back up—at that point, the batteries recharge and homeowners have another 10 hours or more of power.

If your system is larger, or it is sunnier, the battery may charge faster. In winter, you’ll still be able to effectively store energy. In fact, solar panels work more efficiently in colder temperatures.

 
BrightBox

Throughout the day, your solar energy system powers your home and keeps your battery charged. Now, if there is an outage in the night, Brightbox can power the things you care about most for up to 10 hours* or until the sun comes up again.


Keep your food cold, your lights on, and enjoy greater peace-of-mind during a power outage with Sunrun Brightbox.

Stay
comfortable
Keep your
food fresh
Stay
connected
Watch TV
Power your lights
Open your
garage door
Use the internet

* Backup time estimates are based on a fully charged battery and typical use of standard appliances, lights, and outlets.

Why Sunrun Brightbox?

It takes more than just solar battery storage to power your home and maximize solar savings. That’s where Sunrun Brightbox comes in. Combined with our premier solar service, Sunrun Brightbox provides you with backup power during outages and allows you to use solar power stored in the battery when your utility energy rates are most expensive (Time-of-Use rates) depending on where you live.

Brightbox isn’t just a solar battery—it’s a smart solar energy storage service that’s managed by our team to maximize your savings and ensure your system is in top condition, 24/7. To learn more, contact us today.

How Can Sunrun’s Brightbox Solar Battery Storage Service Help You?

State How Brightbox Works

California »

Maximize savings by using Brightbox power during peak times. You’ll no longer have to pay for grid electricity during times of expensive utility rates.

Massachusetts »

Power through the storm and access backup power. You’ll no longer need to purchase and maintain dirty and expensive generators.

Arizona »

Maximize savings by using Brightbox power during peak times. You’ll no longer have to pay for grid electricity during times of expensive utility rates.

New York »

Power through the storm and access backup power. You’ll no longer need to purchase dirty and expensive generators.

Hawaii »

Save with the sun day and night.

Florida »

Power through the storm and access backup power. You’ll no longer need to purchase dirty and expensive generators.

Puerto Rico »

We’ll be there before, during, and after the storm. Brightbox gives Puerto Ricans peace of mind during emergencies.

Make your home a Brilliant Home with Sunrun Brightbox™

Find out if solar is right for you!

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