Felicity Solar IVPS5048P1G1-LV 4kW Single-Phase Inverter / Charger

A single-phase off-grid inverter charger rated 4 kW / 5 kVA, running a 110-127 V pure sine output from a 48 V battery bank. We supply it as an authorised Felicity Solar distributor.

Rated Output Power: 4 kW
Max Efficiency: 90 %
Battery Voltage Range: 42-63 V
Phase: Single Phase

1,750 AEDincl. VAT

In stock

Full Specifications Download datasheet (PDF)

Felicity Solar IVPS5048P1G1-LV 4kW Single-Phase Inverter / Charger features

4 kW rated output power and 5 kVA apparent power, single phase, from a 48 V battery bank

110-127 V AC output, pure sine wave at 50/60 Hz, output voltage regulation held to 5%

Twice rated load for 5 seconds and motor-start capability from the low-frequency design

Three-stage charging up to 50 A: 57.6 V bulk, 54.4 V float, over a 42-63 V battery window

15 ms transfer time, AC input 80-140 V in appliance mode or 90-140 V in UPS mode, 63 A pass-through

Up to 9 units in parallel, RS485 BMS link, IP21 chassis at 31.35 kg net

About the Felicity Solar IVPS5048P1G1-LV 4kW Single-Phase Inverter / Charger

The Felicity Solar IVPS5048P1G1-LV is a single-phase off-grid inverter charger that delivers 4 kW of rated output power, 5 kVA apparent, from a 48 V battery bank to a 110-127 V AC output, in pure sine wave, with a 15 ms transfer time between utility and battery. The LV designation shows in those AC figures: nominal input 110-120 V, output 110-127 V, wired L-N. The low-frequency, transformer-based design carries twice rated load for 5 seconds and is motor-start capable, so pumps and compressors start without tripping it. AC input accepts 80-140 V in appliance mode and 90-140 V in UPS mode at 50/60 Hz, passing through up to 63 A; with no battery connected there is no pass-through. Charging is three-stage - boost CC, boost CV, float - up to 50 A, at 57.6 V bulk and 54.4 V float, across a 42-63 V battery window covering AGM, flooded, lithium-ion and self-defined profiles. RS485 carries BMS data, up to 9 units run in parallel, and line-mode efficiency is above 95%. The IP21 chassis measures 494 x 420 x 195 mm and weighs 31.35 kg net. We are an authorised Felicity Solar distributor and supply the IVPS5048P1G1-LV from our own stock.

Specifications last updated 23 July 2026

Felicity Solar IVPS5048P1G1-LV 4kW Single-Phase Inverter / Charger full specifications

Electrical

AC Output Voltage	110-127 V
AC Wiring Mode	L-N
Backup Rated Output Power	4 kW
Battery Inputs	1
Battery Type	AGM, Flooded, Li-Ion, Self-Defined
Battery Voltage Range	42-63 V
Bulk Charging Voltage	57.6 V
Charge Algorithm	Three-Stage: Boost CC, Boost CV, Float
Float Charging Voltage	54.4 V
High DC Input Recovery Voltage	62 V
High Frequency Disconnect	65 Hz
High Frequency Reconnect	63 Hz
High Line Disconnect Voltage	140 V
High Line Reconnect Voltage	135 V
Input Voltage Range	80-140 V
Input Voltage Range (UPS Mode)	90-140 V
Input Voltage Waveform	Sinusoidal (utility or generator)
Line Mode Efficiency	>95 %
Line Mode Output Waveform	Same As Input Waveform
Low DC Shutdown (<50% Load)	43 V
Low DC Shutdown (>50% Load)	42 V
Low Frequency Disconnect	40 Hz
Low Frequency Reconnect	42 Hz
Low Line Disconnect (Appliance Mode)	80 V
Low Line Disconnect (UPS Mode)	90 V
Low Line Reconnect (Appliance Mode)	85 V
Low Line Reconnect (UPS Mode)	95 V
Low-Battery Recovery (<50% Load)	47 V
Low-Battery Recovery (>50% Load)	46 V
Max AC Charge Current	50 A
Max AC Input Voltage	140 V
Max AC Pass-Through Current	63 A
Max Charging Current	50 A
Max Charging Voltage	61.0 V
Max Efficiency	90 %
Motor Start Capable	Yes
Nominal AC Input Voltage	110-120 V
Nominal DC Input Voltage	48 V
Nominal Input Frequency	50/60 Hz
Output Frequency	50/60 Hz
Output Short-Circuit Protection	Yes
Output Voltage Regulation	5 %
Output Voltage Waveform	Pure Sine Wave
Overload Protection	Air Switch Protection
Overload Trip Time (>105% Load)	10 s
Overload Trip Time (>150% Load)	5 s
Pass-Through Without Battery	No
Phase	Single Phase
Protection	Over Charge Protection, Over Discharge Protection, Overload Protection, Output Short Circuit Protection, Over Temperature Protection
Rated Apparent Output Power	5 kVA
Rated Output Power	4 kW
Short-Circuit Protection (Line Mode)	Air Switch Protection
Start-Up Voltage	46 V
Surge Rating	2*rated (5s)
Transfer Time	15 ms

Mechanical

BMS Communication	RS485
Communication Interface	RS232, RS485
Display	LCD, LED
Gross Weight	35.05 kg
Net Weight	31.35 kg
Package Dimensions	607 x 540 x 290 mm
Parallel Capability	9
Topology	Low-Frequency (transformer-based)

Environmental

Cooling	Intelligent Air Cooling
IP Rating	IP21
Operating Temperature Range	0-40 °C
Storage Temperature	-15 to 60 °C

Frequently Asked Questions

It is rated at 4 kW of output power, 5 kVA apparent, on a single phase, and its backup rated output power is also 4 kW. The low-frequency, transformer-based design carries twice rated load for 5 seconds, and the unit is motor-start capable.

Nominal DC input is 48 V, with a working battery range of 42-63 V and start-up at 46 V. Charging is three-stage - boost CC, boost CV, float - at up to 50 A, with 57.6 V bulk and 54.4 V float and a 61.0 V maximum. AGM, flooded, lithium-ion and self-defined profiles are selectable, and BMS data runs over RS485.

AC output is 110-127 V single phase, L-N, at 50/60 Hz, pure sine wave, with output voltage regulation of 5%. Nominal AC input is 110-120 V; the unit accepts 80-140 V in appliance mode or 90-140 V in UPS mode, transfers in 15 ms and passes through up to 63 A. There is no pass-through without a battery connected.

Up to 9 units can run in parallel. Each unit measures 494 x 420 x 195 mm and weighs 31.35 kg net, 35.05 kg gross, in a 607 x 540 x 290 mm carton. The chassis is IP21 with intelligent air cooling, an LCD and LED display, and an operating temperature range of 0-40 C.

Troubleshooting & error codes

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