The EG4 FlexBOSS21 is a 48V split phase hybrid inverter with 16kW of continuous output and 21kW of PV input on three MPPTs, powerful enough to start a 5-ton AC. Up to 16 units can run in parallel, and it pairs with GridBOSS for full system control.
Key features
- 16kW continuous output
- 21kW PV input, up to 600VDC
- Three MPPTs
- Parallel up to 16 units
- Rapid shutdown, arc-fault and ground-fault protection
- UL 1741 and CEC listed
Specifications
| Brand | EG4 |
|---|---|
| Model / SKU | EG4FLEXBOSS21 |
| Continuous output | 16,000W |
| Solar input | 21,000W |
| Max PV voltage | 600VDC |
| Battery voltage | 48V |
| Output | 120/240V split phase |
| Certifications | UL 1741, CEC |
| Ideal for | Large homes, light commercial and whole home backup |
| Condition | New |
Shipping and returns
Free shipping to addresses in the United States, delivered in 4 to 6 business days (1 to 2 business days to prepare the order plus 3 to 4 business days in transit). Free returns within 30 days of delivery; refunds are issued within 5 business days after the returned item is inspected.
Frequently asked questions
Do I need a licensed installer?
Inverters that connect to your home wiring or the utility grid should be installed by a licensed electrician and may need a permit and utility approval.
Which batteries are compatible?
Most models work with 48V (or the listed voltage) LiFePO4 and lead-acid batteries. Closed-loop communication requires a supported battery brand.
How long does shipping take?
Orders ship free within the United States and arrive in 4 to 6 business days.
