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SunWell Energy

4.0kW 24V Hybrid Solar Inverter

4.0kW 24V Hybrid Solar Inverter

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Model

The SW-4.0KW-24V is a 4.0kW hybrid solar inverter for homes that want solar, storage, and grid working together. It charges a 24V battery from panels through a 5kW MPPT stage and delivers clean pure sine wave power, switching to grid or battery backup within milliseconds. It is a practical entry point for daily self-consumption.

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4.0kW 24V Hybrid Solar Inverter — Technical Specifications
MODELSW-SYP4.0KW-24V
AC Input
Rated Input Voltage208Vac / 220Vac / 230Vac / 240Vac, L + N + PE
Voltage Range90~280Vac±3 (normal mode); 170~280Vac±3 (UPS mode)
Frequency (Hz)50Hz / 60Hz (Auto Adaptive)
AC Output
Rated Capacity4.0kW
Surge Power7.2kVA
Voltage208Vac / 220Vac / 230Vac / 240Vac
Power Factor (PF)1
Frequency50Hz / 60Hz (Auto Adaptive)
Switch Time10ms (normal mode); 10ms (UPS mode)
Wave FormPure Sine Wave
Overload Capacity (Battery Mode)65@102%; 110% load; 108@110%~130%load; 3@130%~150% load; 2@150%load
Max. Efficiency (Battery Mode)92.7%@24Vdc
Parallel QuantityNA
Charger (PV / AC)
Solar Charger TypeMPPT
MPPT input current / Input Power18A / 5000W
MPPT Range/Operating Voltage40~450Vdc
Max.PV Open Circuit Voltage500Vdc
Max.PV Charge Current100A
Max.AC Charge Current100A
Max.Charge Current (PV + AC)100A
Battery
Rated Voltage24Vdc
Battery TypeLithium and Lead-acid
Interface
HMILCD
InterfaceRS485 / RS232 / USB
MonitoringWiFi (Optional)
General Data
Ingress ProtectionIP21
Operating Temperature-10°C ~ 60°C
Relative Humidity5% ~ 95% (Non-condensing)
Storage Temperature-15°C ~ 60°C
Net Weight5.7kg
Gross Weight6.3kg
Product Dimension (W×D×H)430×98×288mm
Max.Operating Altitude4000m (Derating above 1000m)

Features

  • Hybrid PV, Battery, and Grid Operation — It coordinates solar input, 24V battery storage, and grid connection so the system can prioritise self-consumption while keeping backup ready.
  • 5kW MPPT Solar Charging — A wide 40-450Vdc MPPT range and 100A charging current let the inverter harvest up to 5kW from the PV array and charge the battery efficiently.
  • Stable Pure Sine Wave Output — Rated at 4.0kW with a 7.2kVA surge, it supplies 208-240Vac pure sine wave power for sensitive home electronics and motors.
  • Fast Backup Transfer — A 10ms switch moves loads between inverter, grid, and battery with minimal interruption, keeping essential appliances running through outages.
  • Flexible 24V Battery Support — Working with both lithium and lead-acid 24V batteries, it adapts to different storage budgets and lifecycle requirements.
  • Communication and Monitoring Ports — RS485, RS232, and USB interfaces plus an optional WiFi HMI support connection to external monitoring equipment.

Applications

  • Residential Solar Systems: Powers daily home loads from solar with battery backup.
  • Home Energy Storage: Stores daytime solar for evening use and outages.
  • Backup Power: Keeps lights and essentials on during grid failures.
  • Small Shops and Offices: Supports productive loads with self-consumption savings.
  • Rural Electrification: Brings reliable AC power to homes beyond the grid.
  • Solar Self-Consumption: Maximises on-site solar use and reduces bills.

Solar Conversion & MPPT Performance

The SW-4.0KW-24V pairs a 5kW MPPT solar stage with a wide 40-450Vdc operating range and a 500Vdc open-circuit limit, letting it accept sizeable panel strings while tracking each one for maximum yield. A 100A charging path moves that energy efficiently into the 24V battery.

On the AC side, the inverter converts stored and direct solar DC into stable 208-240Vac pure sine wave output at up to 4.0kW, with a 7.2kVA surge for motor starts. By prioritising solar and battery before grid draw, it helps households use more of their own generation.

Grid, Battery & System Integration

As a hybrid unit, the inverter blends PV, a 24V battery, and the grid into one coordinated system. It can charge the battery from solar or AC and release stored energy when needed, supporting both self-consumption and backup from a single device.

Communication is handled through RS485, RS232, and USB, with an optional WiFi HMI for local display, while IP21 protection and a -10C to 60C range suit indoor residential and light commercial environments. A 10ms transfer keeps essential loads supplied through outages.

Frequently Asked Questions

Can the 4.0kW hybrid inverter work with my 24V battery?

Yes. It is built for 24V lithium or lead-acid batteries and charges them from solar through a 5kW MPPT stage.

Will it keep my home powered during a blackout?

It switches to battery backup in about 10ms, so essential loads stay on when the grid drops, then returns to normal once power returns.

How many solar panels can I connect?

The MPPT accepts up to 500Vdc open-circuit and 5kW of PV across a 40-450Vdc range, so size your array within those limits.

Can I monitor the inverter remotely?

It has RS485, RS232, and USB ports with an optional WiFi HMI, which can link to external monitoring equipment.

Expert Support

Our team of solar energy experts is ready to help you find the perfect solution for your needs.

Fast Response

We typically respond to all inquiries within 24 hours during business days.

Custom Solutions

Every project is unique. Let us design a solar solution tailored to your specific requirements.