Felicity Solar Off-Grid Inverters 4 kW IVPS5048

A 48 V off-grid inverter-charger rated 4 kW real and 5 kVA apparent, with a 50 A charger and a pure sine wave 220 V output at 50/60 Hz.

Models Covered: IVPS5048

Manufacturer: Shenzhen Felicity Solar Technology Co., Ltd.

Application: The Felicity Solar IVPS5048 is a single-phase off-grid inverter-charger rated 4 kW of real power and 5 kVA apparent, built around a 48 V battery bank. It delivers a pure sine wave 220 V output at 50/60 Hz and recharges at up to 50 A from the grid or a generator. A low-frequency, transformer-based design carries twice its rated power for 5 seconds and is motor-start capable, so pumps, compressors and workshop tools start without nuisance tripping. The AC input accepts 90-280 V in appliance mode and 170-280 V in UPS mode, with pass-through up to 63 A; pass-through is not available without a battery connected. The charger handles AGM, flooded, lithium-ion and self-defined profiles on a three-stage boost CC, boost CV and float algorithm, bulk at 57.6 V and float at 54.4 V, with RS485 BMS communication, an RS232 port and an LCD with LED indicators. Maximum efficiency is 90% and line-mode efficiency exceeds 95%, and up to 6 units can run in parallel. The IP21 unit measures 494 x 420 x 195 mm, weighs 29.1 kg net and operates from 0 to 40 degrees C. We are an authorised Felicity Solar distributor and supply the IVPS5048 from our own stock.

Models and prices

Technical Specifications

Technical Specifications
ParameterIVPS5048
Performance & Electrical
AC Output Voltage220 V
AC Wiring ModeL+N+PE
Backup Rated Output Power4 kW
Battery Inputs1
Battery TypeAGM, Flooded, Li-Ion, Self-Defined
Battery Voltage Range42-63 V
Bulk Charging Voltage57.6 V
Charge AlgorithmThree-Stage: Boost CC, Boost CV, Float
Float Charging Voltage54.4 V
High DC Input Recovery Voltage62 V
High Frequency Disconnect65 Hz
High Frequency Reconnect63 Hz
High Line Disconnect Voltage280 V
High Line Reconnect Voltage270 V
Input Voltage Range90-280 V
Input Voltage Range (Appliance Mode)90-280 V
Input Voltage Range (UPS Mode)170-280 V
Input Voltage WaveformSinusoidal (utility or generator)
Line Mode Efficiency>95%
Line Mode Output WaveformSame As Input Waveform
Low DC Shutdown (>50% Load)42 V
Low Frequency Disconnect40 Hz
Low Frequency Reconnect42 Hz
Low Line Disconnect (Appliance Mode)90 V
Low Line Disconnect (UPS Mode)170 V
Low Line Reconnect (Appliance Mode)100 V
Low Line Reconnect (UPS Mode)180 V
Low-Battery Recovery (>50% Load)46 V
Max AC Charge Current50 A
Max AC Input Voltage280 V
Max AC Pass-Through Current63 A
Max Charging Current50 A
Max Charging Voltage61.0 V
Max Efficiency90%
Motor Start CapableYes
Nominal AC Input Voltage220 V
Nominal DC Input Voltage48 V
Nominal Input Frequency50/60 Hz
Output Frequency50/60 Hz
Output Short-Circuit ProtectionYes
Output Voltage Regulation5%
Output Voltage WaveformPure Sine Wave
Overload ProtectionAir Switch Protection
Overload Trip Time (>105% Load)10 s
Overload Trip Time (>150% Load)5 s
Pass-Through Without BatteryNo
PhaseSingle Phase
ProtectionOver Charge Protection, Over Discharge Protection, Overload Protection, Output Short Circuit Protection, Over Temperature Protection
Rated Apparent Output Power5 kVA
Rated Output Power4 kW
Short-Circuit Protection (Line Mode)Air Switch Protection
Start-Up Voltage46 V
Surge Rating2*rated (5s)
Transfer Time15 ms
Build & Interfaces
BMS CommunicationRS485
Communication InterfaceRS232
DisplayLCD, LED
Gross Weight32.5 kg
Net Weight29.1 kg
Package Dimensions607 x 540 x 290 mm
Parallel Capability6
TopologyLow-Frequency (transformer-based)
Operating Environment
CoolingIntelligent Air Cooling
IP RatingIP21
Operating Temperature Range0-40 °C
Storage Temperature-15 to 60 °C

Figures are measured at the test conditions the manufacturer’s datasheet states. A dash means the manufacturer publishes no figure for that model.

Availability & grid compliance in the UAE

MarketUAE
Grid authority / regulatorDEWA, ADDC, SEWA
Quotation currencyAED
Support hours timezoneAsia/Dubai
Main citiesDubai, Abu Dhabi, Sharjah, Ajman, Ras Al Khaimah

Figures on this page are the manufacturer's own, measured at the test conditions the datasheet states — they do not change by country. What changes is the approval that has to be met before the unit is energised: in the UAE that rests with the local authorities (DEWA, ADDC, SEWA). Confirm the grid code, import requirements and any local certification with them, or with us, before you order.

For prices, see Felicity Solar Systems: Prices in UAE. Store pickup — collect your order from our store in Dubai or Riyadh.

Key Features & Technical Highlights

  • 4 kW real / 5 kVA apparent single-phase output at 220 V, 50/60 Hz, L+N+PE wiring
  • 48 V nominal battery input, operating across 42-63 V with start-up at 46 V
  • 50 A maximum charging current on a three-stage algorithm: 57.6 V bulk, 54.4 V float
  • Low-frequency design surges to twice rated power for 5 seconds and is motor-start capable
  • Wide AC input: 90-280 V in appliance mode, 170-280 V in UPS mode, 63 A pass-through
  • Up to 6 units in parallel; IP21 enclosure, 494 x 420 x 195 mm, 29.1 kg net

Frequently Asked Questions

What is the rated output of the Felicity Solar IVPS5048?

It is rated 4 kW of real power and 5 kVA apparent power, single phase, with a pure sine wave 220 V output at 50/60 Hz. The low-frequency design also carries twice its rated power for 5 seconds and is motor-start capable.

What battery bank does the IVPS5048 need?

A 48 V nominal bank. It works across 42-63 V, starts up at 46 V and shuts down at 43 V below half load or 42 V above it. It charges AGM, flooded, lithium-ion and self-defined batteries at up to 50 A, with RS485 BMS communication.

Can the IVPS5048 run from a generator?

Yes. It accepts a sinusoidal utility or generator input at 90-280 V in appliance mode, or 170-280 V in UPS mode, and passes through up to 63 A. A battery must be connected, because the unit does not pass power through without one.

How big is the IVPS5048 and can units be paralleled?

The unit measures 494 x 420 x 195 mm and weighs 29.1 kg net, 32.5 kg gross in a 607 x 540 x 290 mm carton. It is IP21 rated with intelligent air cooling for 0 to 40 degrees C, and up to 6 units can be connected in parallel.