Felicity Solar T-REX-4KLP1G01 4kW Single-Phase Hybrid Solar Inverter

The T-REX-4KLP1G01 delivers 4 kW single-phase at 230 V with a 21.7 A maximum output current, two MPPT trackers spanning 100-500 V, and room for up to 5.2 kW of recommended PV power on a 40-60 V battery.

Rated Output Power: 4 kW
Max Efficiency: 97.5 %
Battery Voltage Range: 40-60 V
Phase: Single Phase

1,650 AEDincl. VAT

In stock

Full Specifications Download datasheet (PDF)

Felicity Solar T-REX-4KLP1G01 4kW Single-Phase Hybrid Solar Inverter features

4 kW single-phase output at 230 V

Rated 4 kW / 4 kVA on a single phase at 230 V with an L+N+PE connection, peaking at 21.7 A maximum output current and 2*rated (10s) surge.

97.5% maximum efficiency

Converts at up to 97.5% peak and 96.8% European efficiency, with 99.9% MPPT efficiency, a power factor above 0.99 and total harmonic distortion below 3%.

Two MPPT trackers over 100-500 V

Two independent MPPT trackers start at 130 V, run from 100 V to 500 V, and accept 550 V maximum PV voltage at 15+15 A of PV input current.

5.2 kW maximum recommended PV power

Accepts up to 5.2 kW of recommended PV power, oversizing the 4 kW rating so the array still fills the inverter in weak light.

40-60 V battery charged at up to 100 A

One battery input covers a 40-60 V range and charges or discharges Lead-Acid and Li-Ion banks at up to 100 A and 4 kW over RS485 or CAN BMS links.

IP65 build certified to IEC 62109-1 and IEC 62109-2

Naturally cooled, wall-mounted and rated IP65 from -25 to 60 °C with derating above 45 °C, switching to backup in 20 ms and parallelling up to 6 units.

About the Felicity Solar T-REX-4KLP1G01 4kW Single-Phase Hybrid Solar Inverter

The Felicity Solar T-REX-4KLP1G01 is a single-phase hybrid solar inverter delivering 4 kW of rated output at 230 V, with a maximum output current of 21.7 A, a peak efficiency of 97.5%, a European efficiency of 96.8%, and two MPPT trackers taking up to 5.2 kW of recommended PV power. Those MPPT inputs track from 100 V to 500 V, start at 130 V, and accept 550 V maximum PV voltage with 15+15 A of input current across one string per tracker. On the storage side the T-REX-4KLP1G01 works over a 40-60 V battery range on one battery input, charging and discharging Lead-Acid and Li-Ion banks at up to 100 A and 4 kW while self-adapting to the BMS over RS485 or CAN. Transfer to backup takes 20 ms at up to 30 A. The isolated, transformer-based design is naturally cooled, rated IP65, and runs from -25 to 60 °C with derating above 45 °C. Up to 6 units run in parallel. We are an authorised Felicity Solar distributor and supply the T-REX-4KLP1G01 from our own stock, and this model carries a warranty of 2 Years.

Specifications last updated 23 March 2026

Felicity Solar T-REX-4KLP1G01 4kW Single-Phase Hybrid Solar Inverter full specifications

Electrical

AC Output Voltage	230 V
AC Rated Output Current	17.4 A
AC Wiring Mode	L+N+PE
Backup Max Output Current	30 A
Backup Rated Output Power	4 kW
Battery Inputs	1
Battery Type	Lead-Acid, Li-Ion
Battery Voltage Range	40-60 V
Charge Algorithm	Self-Adaption to BMS
European Efficiency	96.8 %
Grid Frequency Range (50 Hz)	45-55 Hz
Grid Frequency Range (60 Hz)	55-65 Hz
Grid Regulation	CEI 0-21, G99, VDE 4105, EN 50549-1, NRS 097-2-1, C10/11, NTS & UNE217001 & UNE217002, PORTARIA N° 140 & 515
Ground Fault Current Monitoring	Yes
Input Voltage Range	184-264.5 V
MPPT Efficiency	99.9 %
MPPT Full-Load Voltage Range	175-500 V
MPPT Trackers	2
MPPT Voltage Range	100-500 V
Max AC Charge Current	100 A
Max AC Input Current	40 A
Max AC Output Power	4 kW
Max AC Pass-Through Current	30 A
Max Charge/Discharge Power	4 kW
Max Charging Current	100 A
Max Discharging Current	100 A
Max Efficiency	97.5 %
Max Output Current	21.7 A
Max PV Input Current	15+15 A
Max PV Voltage	550 V
Max Recommended PV Power	5.2 kW
Max Short-Circuit Current	18+18 A
Nominal AC Input Voltage	230 V
Nominal Input Frequency	50/60 Hz
Output Frequency	50/60 Hz
Output Short-Circuit Protection	Yes
Overload Protection	Yes
PV Working Voltage Range	90-550 V
Phase	Single Phase
Power Factor	>0.99
Power Factor Adjustment Range	0.8 leading to 0.8 lagging
Protection	Output Over Current Protection, Output Over Power Protection, Output Short-Circuit Protection, Anti-islanding Protection, GFCI Protection, Insulation Resistor Detection
Rated Apparent Output Power	4 kVA
Rated Output Power	4 kW
Rated PV Input Voltage	360 V
Start-Up Voltage	130 V
Strings per MPPT	1
Surge Rating	2*rated (10s)
Total Harmonic Distortion	<3 %
Transfer Time	20 ms

Mechanical

BMS Communication	RS485, CAN
Communication Interface	RS232, RS485
Display	LCD, LED
Gross Weight	39.1 kg
Installation Style	Wall-Mounted
Monitoring Module	WiFi/GPRS
Net Weight	32.4 kg
Package Dimensions	632 x 570 x 315 mm
Parallel Capability	6
Safety Standard	IEC 62109-1, IEC 62109-2
Topology	Isolated (transformer-based)

Environmental

Cooling	Nature
IP Rating	IP65
Operating Altitude	2000 m
Operating Temperature Range	-25 to 60 (>45 derating) °C
Relative Humidity	0-100 %

Certifications

IEC 62109-1
IEC 62109-2

Frequently Asked Questions

5.2 kW is the maximum recommended PV power for the T-REX-4KLP1G01. Its two MPPT trackers run from 100 V to 500 V, start up at 130 V, and accept a 550 V maximum PV voltage with 15+15 A of PV input current, one string per tracker, over a 90-550 V working range.

97.5% is the maximum efficiency of the T-REX-4KLP1G01, alongside a 96.8% European efficiency and 99.9% MPPT efficiency. It puts out 4 kW / 4 kVA single-phase at 230 V, holds a power factor above 0.99 adjustable from 0.8 leading to 0.8 lagging, and keeps total harmonic distortion below 3%.

40-60 V is the battery voltage range of the T-REX-4KLP1G01, on a single battery input. It charges and discharges Lead-Acid and Li-Ion banks at up to 100 A and 4 kW, self-adapting to the BMS over RS485 or CAN, and it can pull 100 A of AC charge current from a 40 A grid input.

530 x 493 x 228 mm (W x H x D) are the T-REX-4KLP1G01 dimensions, at a 32.4 kg net weight; the shipping package measures 632 x 570 x 315 mm and 39.1 kg gross. The unit is wall-mounted, naturally cooled and rated IP65, running from -25 to 60 °C with derating above 45 °C up to 2000 m altitude.

Troubleshooting & error codes

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