Full specifications

Brand	Crown
Inverter Specifications
Model	XAVIER II 4KW
Inverter type	Off-Grid
Grid type	Single Phase
Warranty	5 Years
PV Input Data
Max DC input power	5000 W
PV input voltage	500 V
MPPT voltage range	60-450 V
Max. PV input current	27 A
AC Output Data
Rated AC output	4000 W
Rated voltage	230 V
Battery Data
Battery type	Lithium & Lead-Acid
Battery voltage range	24 V
Max. charging current	120 A
Max. discharging current	120 A
BMS	Wi-Fi / RS-485 / CAN
General Specifications
Weight	9.5 kg
Operating temperature	-10°C ~ +50°C
Max. efficiency	93%
Size (W×H×D)	322.6 × 420.3 × 107 mm

Note: No grid export and no net metering. The datasheet lists feed-in to the grid only for the Xavier 6KW - the parenthetical is easy to miss, but it means this smaller model in the pair is solar plus battery backup only. It still charges from utility or generator; that is not the same as being grid-interactive. Battery-based hybrid with a built-in MPPT solar charger. Selectable input window: 170-280 VAC for computers or 90-280 VAC for household loads, with a 10 ms / 20 ms transfer time to match. Dual outputs for smart load management.