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- 64kWh LFP storage, 32kW rated AC output
- Up to 42kW of solar input
- GridBOSS 200A whole-home MID with smart loads
- 2x FlexBOSS21 hybrid inverters
- Outdoor-rated: NEMA 4X inverters, All Weather batteries
- Includes conduit boxes, cables, screen kit, breakers
- 10-year warranty on inverter, GridBOSS and batteries
Ships by LTL freight. Too large for parcel delivery. Questions on freight? Call (888) 831-0450.
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Product Documents
- EG4 GridBOSS MID Spec Sheet (v1.1.8)
- EG4 FlexBOSS21 Hybrid Inverter Spec Sheet (v1.3.0)
- EG4 WallMount 314Ah All Weather Battery Spec Sheet (v1.0)
- EG4 GridBOSS User Manual (MI-200-2P-HYB-AW-03, v2.0.7)
- EG4 FlexBOSS21 Hybrid Inverter User Manual (v1.3.7)
- EG4 WallMount 314Ah All Weather Battery User Manual (v1.0.3)
- EG4 GridBOSS Warranty Document
- EG4 FlexBOSS21 Warranty Document
Our largest whole-home backup package: two FlexBOSS21 hybrid inverters, four 314Ah WallMount batteries (64kWh total) and a GridBOSS MID to manage it all. It's built for big homes and heavy loads, so you can keep HVAC, kitchen, well pump and everyday circuits running through long outages, and it's ready for solar whenever you want to add panels.
Highlights
- Keep life moving during outages: power lighting, refrigeration and other selected loads when the utility goes down
- 64kWh of storage from four 314Ah WallMount batteries
- Up to 24kW continuous battery-only output from two FlexBOSS21 inverters
- Smarter energy management: the GridBOSS coordinates grid, inverters and loads so you choose what gets power first
- Solar-ready with up to 42kW of PV capacity
What's included
- 2× EG4 FlexBOSS21 hybrid inverter
- 4× EG4 314Ah WallMount battery (16kWh each)
- 1× EG4 GridBOSS MID
System at a glance
| AC output | Up to 32kW (with PV + grid); up to 24kW continuous from batteries |
| Battery storage | 64kWh LiFePO4 |
| Max PV input | 42kW (21kW per inverter) |
| Energy management | GridBOSS MID, 200A service entrance |
Warranty & shipping
- EG4 warranties: FlexBOSS21 10 years, WallMount batteries 10 years, GridBOSS 10 years
- Combined weight of major components: ~1,558 lbs. Ships in multiple pieces by freight
Actual backup runtime depends on your home's loads and configuration. Solar panels, racking, breakers and wiring are not included. Professional installation by a licensed electrician is recommended.
| Manufacturer | EG4 Electronics (bundle) |
|---|---|
| Bundle SKU | BNDL-E3264 |
| Battery Storage | 64kWh |
| Rated Power | 32kW |
| Max PV Input | 42kW |
| Battery-Only Continuous Output | up to 24kW |
| Includes | 1x EG4 GridBOSS MID v3.1 (Microgrid Interconnect Device (MID); 200A service entrance (350A bus, software limited to 200A); 3 x 90A (12kPV, 18kPV, FlexBOSS18, FlexBOSS21)) |
| Includes | 2x EG4 FlexBOSS21 Hybrid Inverter (16kW (66.7A); 12kW (50A); 21kW (STC)) |
| Includes | 4x EG4 WallMount All Weather Battery 48V 314Ah 16kWh (LiFePO4; 51.2 VDC; 314Ah) |
| Includes | 4x EG4 280Ah/314Ah All Weather Conduit Box |
| Includes | 3x EG4 280Ah/314Ah WallMount Battery Paralleling Cable Kit |
| Includes | 1x EG4 FlexBOSS LCD Screen Kit |
| Includes | 2x BSB 90A AC Circuit Breaker |
| Includes | 1x Eaton CSR 200A Main Breaker |
Specifications are from the manufacturer and may change. Questions? Call (888) 831-0450.
EG4 Limited Warranty (per component): GridBOSS 10-year limited; FlexBOSS21 10-year limited; WallMount 314Ah 10-year or 10,000 cycles (whichever first), prorated
| GridBOSS | 10-year limited |
|---|---|
| FlexBOSS21 | 10-year limited |
| WallMount 314Ah | 10-year or 10,000 cycles (whichever first), prorated |
| How to claim | contact original place of purchase (Sky Solar USA) / EG4 |
Download: EG4 GridBOSS Warranty Document
Download: EG4 FlexBOSS21 Warranty Document
Manufacturer warranties are provided by the manufacturer. Keep your invoice as proof of purchase. Questions about a warranty claim? Call (888) 831-0450.