The EG4 FlexBOSS18 is a hybrid solar inverter built for split-phase homes and shops that want battery backup paired with a large solar array. It's aimed at buyers who need three independent MPPT channels and room to scale output as their load grows.
Based on the title data provided, this is a hybrid inverter architecture — it accepts PV input and battery storage and outputs split-phase AC. Confirmation of specific UL/IEEE interconnection listings could not be sourced from the manufacturer data supplied here. Note: If you would like to review the manufacturer Product Specifications, Warranty, Brochure, etc., for this system, please refer to the "Resources (System Manuals and Warranty)" Tab above on this page.
Critical Power & Interconnection Requirements
- AC Output: Split-Phase (voltage detail beyond "split-phase" not specified in source data — [NEEDS VERIFICATION])
- Continuous AC Output: 13kW
- PV Input Capacity: Up to 18kW
- MPPT Channels: 3 independent MPPT inputs
- Surge/Peak AC Output: not specified in source data — [NEEDS VERIFICATION]
- DC Battery Voltage: not specified in source data — [NEEDS VERIFICATION]
- Does NOT have confirmed grid sell-back capability per available data — [NEEDS VERIFICATION]
- Does NOT have a confirmed UL 1741 listing per available data — [NEEDS VERIFICATION]
Key Benefits
- Three independent MPPT channels for flexible array design across multiple roof faces
- 18kW PV input capacity supports larger solar arrays than the AC output alone would suggest
- 13kW continuous AC output rated for split-phase service
- Scalable design referenced in product nomenclature for expanding system capacity
- Remote Wi-Fi monitoring for checking system status without an on-site visit
| Spec | Value | Unit |
|---|---|---|
| Continuous AC Output | 13 | kW |
| PV Input Capacity (Max) | 18 | kW |
| MPPT Channels | 3 | count |
| AC Output Configuration | Split-Phase | — |
| Monitoring | Remote Wi-Fi | — |
Note: See "Resources (System Manuals and Warranty)" Tab above for full specifications.
Compatibility & Fitment
- Configured for split-phase AC output applications.
- Supports up to 3 independently wired MPPT solar strings.
- Remote Wi-Fi monitoring supported.
- Battery chemistry compatibility is NOT specified in the provided manufacturer data — [NEEDS VERIFICATION].
- DC battery voltage compatibility (12V/24V/48V) is NOT specified in the provided manufacturer data — [NEEDS VERIFICATION].
- Grid sell-back capability is NOT confirmed in the provided manufacturer data — [NEEDS VERIFICATION].
- Parallel/stacking unit limits are NOT detailed in the provided manufacturer data — [NEEDS VERIFICATION].
| Item | Detail |
|---|---|
| UL 1741 | [NEEDS VERIFICATION] |
| UL 458 | [NEEDS VERIFICATION] |
| IEEE 1547 | [NEEDS VERIFICATION] |
| NEMA Enclosure Rating | [NEEDS VERIFICATION] |
| Applicable NEC Articles | [NEEDS VERIFICATION] |
FAQ
Can this inverter sell power back to the grid?
[NEEDS VERIFICATION] Grid sell-back capability is not specified in the manufacturer data provided for this listing.
What battery voltage is required?
[NEEDS VERIFICATION] DC battery voltage is not specified in the manufacturer data provided for this listing.
Can I parallel multiple units together?
The listing title indicates the FlexBOSS18 is scalable, but stacking limits and communication requirements are not detailed in the source data. [NEEDS VERIFICATION]
Is this UL 1741 listed for utility interconnection?
[NEEDS VERIFICATION] UL 1741 listing status is not specified in the manufacturer data provided for this listing.
Warranty & Registration
Manufacturer warranty terms were not included in the provided data. [NEEDS VERIFICATION] Please refer to the "Resources (System Manuals and Warranty)" Tab above on this page for warranty documentation.
