ALL-IN-ONE HYBRID INVERTER
- Capable of running entirely off grid, using grid electricity, and selling power back to the grid.
UP TO 600VDC INPUT
- The extra high voltage enables lower cable sizing for the 3 MPPTs and a maximum recommended PV input of 21kW, eliminating the need for a combiner box.
PLUG-IN WI-FI DEVICE
- Enables wireless connection between our monitoring platform and the FlexBOSS21 through the EG4® app or EG4 Monitor system for remote system management.
CLOSED-LOOP COMMUNICATIONS
- Able to communicate with EG4 48V batteries and other battery brands. A battery firmware update is required for closed-loop communications with LifePower4 batteries.
RAPID SHUTDOWN
- The FlexBOSS21 is CSA C22.2#330:2017 and NEC 690.12 ready with its built-in RSD capabilities.
EG4 FlexBOSS21 Hybrid Inverter
$5,170.00Price

