Watt & Wrench

EG4 FlexBOSS21 16kW AC Hybrid Inverter

EG4 FlexBOSS21 16kW AC Hybrid  Inverter

EG4 FlexBOSS21 16kW AC Hybrid Inverter

Signature Solar
$3,600

Price as of Nov 11, 2026. Prices and availability change; check the retailer for the current figure.

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EG4 FlexBOSS21 16kW Inverter: 48V split-phase, 21kW PV input, 3 MPPTs, GridBOSS compatible, and supports remote monitoring.

Specs

SKU1526018-02
Rated Output Power16kW of continuous output power/12kW continuous output by using battery alone
Max PV Input21kw
ParallelingParallel up to 10 units for 160 kw of output power
Number of MPPTs3
Spec SheetDownload
User ManualDownload
Certificate of ComplianceDownload
Spec Sheet URLhttps://eg4electronics.com/wp-content/uploads/2024/10/EG4-FlexBoss21-Spec-Sheet.pdf
CertificationsUL1741
Max PV Voltage600 V
MPPT Min Voltage120 V
MPPT Max Voltage440 V
Recommended Max PV21000 W
Max PV Current26 A
UPS Transfer Time20 ms
PV Short-Circuit Current31 A
Continuous Output Power16000 W
Surge Power24000 W for 0.5 s

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