Felicity Solar 4KLP1G01

InvertersModel T-REX-4KLP1G01

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

Models in the T-REX-3KLP1G01 – T-REX-6KLP1G01 family

What sets the T-REX-4KLP1G01 apart from the other 5 models in the family: AC Rated Output Current 17.4 A; Backup Rated Output Power 4 kW; European Efficiency 96.8 %; MPPT Full-Load Voltage Range 175-500 V; Max AC Charge Current 100 A; Max AC Output Power 4 kW; Max AC Pass-Through Current 30 A; Max Charge/Discharge Power 4 kW.

AED 1,650incl. VAT

In stock

  • Delivered within 3 business days, door to door, to every market we serve.
  • Dispatched the same business day for an order placed before 21:00 (Dubai time), or the next business day after.
  • Delivery charge: AED 200
  • 2-year warranty
Full SpecificationsDownload 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(50)

AC Output Voltage230 V
AC Rated Output Current17.4 A
AC Wiring ModeL+N+PE
Backup Max Output Current30 A
Backup Rated Output Power4 kW
Battery Inputs1
Battery TypeLead-Acid, Li-Ion
Battery Voltage Range40-60 V
Charge AlgorithmSelf-Adaption to BMS
European Efficiency96.8 %
Grid Frequency Range (50 Hz)45-55 Hz
Grid Frequency Range (60 Hz)55-65 Hz
Grid RegulationCEI 0-21, G99, VDE 4105, EN 50549-1, NRS 097-2-1, C10/11, NTS & UNE217001 & UNE217002, PORTARIA N° 140 & 515
Ground Fault Current MonitoringYes
Input Voltage Range184-264.5 V
MPPT Efficiency99.9 %
MPPT Full-Load Voltage Range175-500 V
MPPT Trackers2
MPPT Voltage Range100-500 V
Max AC Charge Current100 A
Max AC Input Current40 A
Max AC Output Power4 kW
Max AC Pass-Through Current30 A
Max Charge/Discharge Power4 kW
Max Charging Current100 A
Max Discharging Current100 A
Max Efficiency97.5 %
Max Output Current21.7 A
Max PV Input Current15+15 A
Max PV Voltage550 V
Max Recommended PV Power5.2 kW
Max Short-Circuit Current18+18 A
Nominal AC Input Voltage230 V
Nominal Input Frequency50/60 Hz
Output Frequency50/60 Hz
Output Short-Circuit ProtectionYes
Overload ProtectionYes
PV Working Voltage Range90-550 V
PhaseSingle Phase
Power Factor>0.99
Power Factor Adjustment Range0.8 leading to 0.8 lagging
ProtectionOutput Over Current Protection, Output Over Power Protection, Output Short-Circuit Protection, Anti-islanding Protection, GFCI Protection, Insulation Resistor Detection
Rated Apparent Output Power4 kVA
Rated Output Power4 kW
Rated PV Input Voltage360 V
Start-Up Voltage130 V
Strings per MPPT1
Surge Rating2*rated (10s)
Total Harmonic Distortion<3 %
Transfer Time20 ms

Mechanical(11)

BMS CommunicationRS485, CAN
Communication InterfaceRS232, RS485
DisplayLCD, LED
Gross Weight39.1 kg
Installation StyleWall-Mounted
Monitoring ModuleWiFi/GPRS
Net Weight32.4 kg
Package Dimensions632 x 570 x 315 mm
Parallel Capability6
Safety StandardIEC 62109-1, IEC 62109-2
TopologyIsolated (transformer-based)

Environmental(5)

CoolingNature
IP RatingIP65
Operating Altitude2000 m
Operating Temperature Range-25 to 60 (>45 derating) °C
Relative Humidity0-100 %

Certifications(2)

  • IEC 62109-1
  • IEC 62109-2

Downloads & support

PDFThe manufacturer's sheet, to print or share

Troubleshooting & error codes

Looking up an error code on this FelicityESS T-REX-3KLP1G01? Browse the full list of codes for this device, with the cause and recommended fix for each.

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Frequently Asked Questions

How large a solar array can the T-REX-4KLP1G01 take?

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.

How efficient is the T-REX-4KLP1G01?

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%.

Which batteries work with the T-REX-4KLP1G01?

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.

What are the T-REX-4KLP1G01 dimensions and weight?

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.

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