EG4 Inverters Compared: Output, Solar Input, Idle Draw

One table for the whole inverter range, so you do not have to open seven PDFs. Every cell is a datasheet value; the column marked “calculated” is our arithmetic on two of them.

Model	Continuous output	Battery	Solar input (recommended max)	MPPTs	Idle draw (worst listed)	Solar ÷ output (calculated)	Warranty
6000XP	6 kW	48 VDC	10 kW	2	50 W	1.67×	5-year standard warranty
12000XP	12 kW	48 VDC	28 kW	2	70 W	2.33×	5-year standard warranty
18kPV	12 kW	48 VDC	21 kW	3	70 W	1.75×	10-year standard warranty
12kPV	8 kW	48 VDC	15 kW	2	55 W	1.88×	10-year standard warranty
FlexBOSS21	12 kW	51.2 VDC	21 kW	3	65 W	1.75×	10 years
FlexBOSS18	10 kW	51.2 VDC	18 kW	2	60 W	1.80×	10 years
3000EHV-48	3 kW	48 VDC	5 kW	1	70 W	1.67×	3 years

How to read it

Continuous output is the figure a house can lean on. Some datasheets give two: the 12000XP lists 12,000 W without solar (15,000 W only on model IV-15000-XP-IN-01), and the FlexBOSS models list a lower battery-only number than the with-PV one. The table uses the battery-only or without-PV figure, because that is what you have at night and in a storm.
Idle draw is what the inverter uses just by being on. Where a sheet lists several figures we show the highest, so the result is not flattering. Multiply by 24 hours to see what it costs your battery each day.
Solar ÷ output is the recommended maximum solar input divided by continuous output. A bigger number means the inverter is meant to be paired with a larger array relative to what it can deliver at once. It is arithmetic, not a rating.
Battery voltage is shown as the datasheet prints it: 48 V on some, 51.2 V on others. Both are “48 V-class” batteries.

To turn these numbers into a decision, use the sizing helper, or read how to choose an inverter. Each row links to the model page with the full datasheet lines.