Inverter Comparison

EG4 18kPV vs. EG4 FlexBOSS21

Price$4,898$4,199
Inverter Typehybridhybrid
Input Data (PV)
Max PV Input Power18 kW21 kW
MPPT Voltage Range140-500 V120-440 V
Max PV Input Voltage600 V600 V
# of MPPTs33
Inputs per MPPT
2 / 1 / 1
2 / 2 / 1
Max Usable Input Current
25 A / 15 A / 15 A
26 A / 26 A / 15 A
Max Short Circuit Input Current31 A / 19 A / 19 A31 A / 31 A / 19 A
AC CoupleYesNo (only with gridboss)
Max AC Couple Input Power
Output Data (AC)
Nominal Output Power
12 kW
16 kW (with PV)
12 kW (battery only)
Peak Surge15.5 kW24 kW
Locked Rotor Amps (LRA)180 A195 A
Output Voltage120/240VAC120/240V
Grid Frequency50/60Hz50/60Hz
Max Output Current50 A66.7 A
Max Grid Passthrough (Bypass)200 A90 A
Battery
Battery Nominal Voltage48 V48 V
Battery TypeLead-acid / LithiumLead-acid / Lithium
Max Battery Charge / Discharge250 A / 250 A250 A / 250 A
General Info
Idle Consumption70 W65 W
Parallel SupportUp to 10 unitsUp to 16 units
MonitoringApp/Web/LCDApp/Web (LCD optional)
Outdoor RatingNEMA 4XNEMA 4X
Dimensions (H×W×D)34.4 × 20.5 × 11.2 in30.4 × 22.3 × 11.2 in
Weight121 lbs121 lbs
Noise Level68 dB @ 3 ft<50 dB @ 3 ft
Warranty10 years10 years