Most homeowners don't think about backup power until the grid fails at the worst possible moment. A summer storm rolls through, the power drops, and suddenly the refrigerator, the sump pump, and everything else you depend on goes dark. Hours turn into days, and you're left scrambling.
The longer you wait, the more vulnerable your household stays. Spoiled food, failed medical devices, flooded basements, and no heat or cooling aren't inconveniences. They're real financial and safety risks. You need a solution that works the moment you need it, not one that leaves you guessing.
The Bluetti EP800+4xB500 is a whole-home battery backup system built to handle exactly that. With 10kWh of expandable LiFePO4 storage and up to 6,000W of continuous output, this system gives your household the capacity to run critical loads for extended periods, with or without solar.
Bluetti built the EP800 around a bidirectional inverter platform, which means the same unit handles charging from the grid, discharging to your home, and managing solar input all at once. There's no external inverter to install separately. The B500 expansion batteries connect directly to the EP800, and with four units included in this bundle, you're starting at a full 10kWh of usable capacity right out of the box.
The system supports up to 16.4kW of solar input, making it one of the more capable solar-ready home battery platforms available for residential use. If you're adding panels now or planning to in the future, the EP800 scales with your setup. The LiFePO4 cells are rated for over 3,500 charge cycles before dropping to 80% capacity, which translates to a decade or more of dependable daily use.
Charging is flexible. You can pull power from the grid during off-peak hours, charge from solar panels, or connect a compatible generator for fuel-powered replenishment during extended outages. The Bluetti app ties everything together with real-time monitoring and scheduling controls so you're always in control of how the system operates.
Ready to put the EP800+4xB500 to work at your home? Talk to our power specialists to confirm compatibility with your electrical setup before you order.
This system is purpose-built for homeowners who need reliable, whole-home or partial-home backup coverage. It's not a portable power station for camping trips. It's a permanent, wall-mounted energy storage system designed for residential installation.
Here's where the EP800+4xB500 delivers the most value:
If your household has frequent outages, rising utility rates, or a solar system already in place, this bundle is built for your situation. Contact us today to get personalized guidance on sizing and installation requirements.
Plenty of home battery systems exist, but most fall into one of two camps: underpowered units that can't run meaningful loads, or oversized whole-home systems that require a licensed electrician and a five-figure investment just to get started. The EP800+4xB500 sits in a practical middle ground.
Generic or off-brand competitors often ship with NMC lithium cells that carry higher thermal risk and degrade faster under daily cycling. The EP800 uses LiFePO4 chemistry, which is widely recognized as the safer, longer-lasting option for stationary storage. With a 3,500-plus cycle rating, you won't be replacing cells or shopping for a new system in five years.
Bluetti has been designing large-format battery systems since 2019 and has earned a reputation for app integration, build quality, and responsive customer support. The EP800 specifically carries certifications for North American residential installation, which matters when your local electrician needs to sign off on the work.
Buying from an unauthorized seller might save a few dollars upfront, but it voids the manufacturer warranty and leaves you without recourse if something goes wrong. Mighty Generators is an authorized Bluetti dealer, which means your purchase is backed by the full manufacturer warranty and our own dealer support team.
| Specification | Details |
|---|---|
| Model | EP800 + 4x B500 |
| Total Usable Capacity | 10kWh (4 x 2.5kWh) |
| Continuous AC Output | 6,000W |
| Peak AC Output | 10,000W (surge) |
| AC Voltage Output | 120V/240V Split Phase |
| Battery Chemistry | LiFePO4 (Lithium Iron Phosphate) |
| Cycle Life | 3,500+ cycles to 80% capacity |
| Max Solar Input | 16,400W (EP800) |
| Solar Input Voltage Range | 55V - 150V DC |
| Max Charging Current (Solar) | 130A |
| Grid Charging | Yes, up to 6,000W |
| Generator Charging | Yes, compatible with AC generator input |
| Expandable Battery Slots | Up to 8x B500 (20kWh maximum) |
| App Monitoring | Bluetti App (iOS and Android), Wi-Fi and Bluetooth |
| Installation Type | Wall-mounted, indoor |
| Operating Temperature | -4F to 104F (-20C to 40C) |
| EP800 Unit Weight | Approx. 132 lbs (60 kg) |
| B500 Unit Weight | Approx. 110 lbs (50 kg) each |
| Certifications | UL Listed, FCC |
| Warranty | 5 years (EP800); 5 years (B500) |
Runtime depends on which appliances you're running and how many are active at once. With 10kWh of capacity and a 6,000W continuous output, the system can run a standard refrigerator, several lights, and a TV for 12 to 20 hours on a full charge. Running high-draw loads like central air conditioning or an electric range will reduce that window significantly. Pairing the system with solar panels keeps the batteries replenished during daytime hours, extending your coverage through multi-day outages.
Yes. The EP800 supports up to eight B500 units total, which brings maximum capacity to 20kWh. This bundle includes four B500s to get you started at 10kWh, and you can purchase additional B500 batteries and connect them to the same EP800 inverter unit when you're ready to expand. No new inverter hardware is required.
Yes, professional installation by a licensed electrician is required and strongly recommended. The EP800 outputs 120V/240V split-phase power and must be connected to a subpanel or critical-load panel in your home's electrical system. Installation requirements will vary by local code, and your electrician will need to pull the appropriate permits. Bluetti provides wiring documentation and installation guides to streamline the process.
In most cases, yes. The EP800 accepts solar input up to 16,400W with a voltage range of 55V to 150V DC, which is compatible with a wide variety of residential panel configurations. If your existing system routes through a separate solar inverter, your installer will need to evaluate the integration path. For new solar installations, the EP800's built-in MPPT controllers simplify the connection significantly.
A gas standby generator produces power continuously as long as it has fuel, while the EP800+4xB500 stores and delivers a set amount of energy per charge cycle. The battery system wins on noise, emissions, and maintenance since there are no oil changes, no exhaust fumes, and no engine to service. For outages beyond two to three days without solar recharging, a generator still has the edge in raw runtime. Many homeowners use both: a battery system for immediate, silent backup and a generator for extended events.
Yes. The EP800 inverter unit and each B500 battery carry a 5-year manufacturer warranty from Bluetti. Because Mighty Generators is an authorized Bluetti dealer, every unit we sell is covered under the full warranty with no restrictions. Purchasing from unauthorized resellers on third-party marketplaces can void that coverage entirely. Still have questions? Contact our power specialists before you order.
Bluetti backs the EP800 and B500 with a 5-year warranty on both the inverter unit and the expansion batteries. That coverage is only valid when you purchase through an authorized dealer. Mighty Generators is an authorized Bluetti dealer, and every EP800+4xB500 system we sell ships with full manufacturer warranty protection.
Our team includes power equipment specialists who can help you evaluate whether this system fits your home's load requirements, your electrical panel capacity, and your installation timeline. We don't just process orders. We're here before the sale and after it.
Contact Mighty Generators today to speak with a power specialist and get your Bluetti EP800+4xB500 ordered with full confidence.
Use our free Generator Sizing Calculator. Match wattage, fuel, and runtime to your home or jobsite in 5 minutes.
No spam. Unsubscribe anytime.
