Product Description

Reliable Solar Power & Battery Backup for Sri Lanka

The Unitec VMH 3.6K Pure Sine Wave Off-Grid Hybrid Solar Inverter is a high-performance 24V inverter designed to provide uninterrupted electricity for homes, offices, shops, farms, and commercial buildings across Sri Lanka. Whether you’re facing frequent CEB or LECO power cuts, or building a complete off-grid solar system, the Unitec VMH 3.6K delivers reliable, efficient, and intelligent power management.

Combining a 3600W Pure Sine Wave Inverter, a 100A MPPT Solar Charge Controller, a 100A AC Battery Charger, and advanced WiFi monitoring, this all-in-one hybrid inverter maximizes solar energy usage while ensuring dependable backup power whenever you need it.

One of the Few Inverters That Works Directly from Solar Without Batteries

Unlike many conventional hybrid inverters available in the Sri Lankan market, the Unitec VMH 3.6K can operate using solar panels alone, even without connecting a battery (subject to sufficient solar generation and load conditions).

This unique feature allows users to:

• Reduce initial installation costs.
• Start with solar panels and add batteries later.
• Continue using solar energy during daylight hours without battery storage.
• Increase energy independence from the national grid.

This makes the VMH 3.6K one of the most flexible and future-ready hybrid inverters available in Sri Lanka.

Powerful 3.6KW Pure Sine Wave Output

The Unitec VMH 3.6K delivers 3600W (3.6KVA) of continuous Pure Sine Wave power, making it suitable for running sensitive electronics and household appliances safely.

Ideal for powering:

• LED Lighting
• Ceiling Fans
• Refrigerators
• Televisions
• Desktop Computers
• Laptops
• WiFi Routers
• CCTV Systems
• Printers
• Small Office Equipment
• Home Appliances

Its Pure Sine Wave output provides clean, stable electricity that protects sensitive devices from damage caused by unstable power.

Built-in 100A MPPT Solar Charge Controller

The integrated 100A MPPT Solar Charge Controller maximizes solar harvesting by continuously tracking the optimum operating voltage of your solar panels.

Solar Specifications

• Maximum PV Array Power – 5000W
• MPPT Charging Current – 100A
• Maximum Solar Input Voltage – 500V DC
• MPPT Operating Voltage – 40V – 450V DC
• Maximum Solar Input Current – 18A

This enables higher charging efficiency, improved battery life, and better overall system performance.

High-Speed AC Battery Charging

The inverter includes a powerful 100A AC Battery Charger, allowing batteries to recharge quickly whenever grid power or a generator is available.

AC Charging Specifications:

• Input Voltage: 208–240V AC
• Frequency: 50/60Hz
• Maximum Charging Current: 100A
• Charging Voltage: 27V DC

Fast charging minimizes downtime and ensures your backup system is always ready.

Supports Multiple Battery Technologies

The Unitec VMH 3.6K supports nearly every popular battery technology used in Sri Lanka.

Compatible Battery Types:

• AGM Batteries
• GEL Batteries
• Sealed Lead Acid Batteries
• OP-LE / OPzS Batteries
• LiFePO4 Batteries
• Lithium Batteries with BMS Communication

This gives users the flexibility to choose the battery technology that best suits their budget and backup requirements.

Smart WiFi Monitoring

Monitor your entire solar system anytime, anywhere.

Using the optional WiFi monitoring module, you can:

• View live PV production
• Monitor battery charging status
• Check inverter operating mode
• View power consumption
• Monitor load usage
• Receive system alerts
• Access historical performance data

Monitoring is available through both a mobile application and a web portal, giving you complete visibility of your solar system whether you’re at home or away.

Intelligent LCD Display

The easy-to-read LCD display provides real-time system information, including:

• AC Input Status
• Solar PV Input Status
• Inverter Operation
• Load Output
• Battery Charging Level
• Battery Status
• Alarm Notifications
• Fault Codes
• System Operating Mode

The display allows users to quickly understand the health and performance of the entire system.

Designed for Sri Lankan Conditions

The Unitec VMH 3.6K is engineered to handle the power challenges experienced throughout Sri Lanka.

Whether connected to:

• CEB
• LECO
• Generator Systems
• Solar Panel Arrays

the inverter intelligently manages available power sources to ensure uninterrupted electricity for your home or business.

Ideal Applications

Perfect for:

• Homes
• Villas
• Apartments
• Offices
• Retail Shops
• Hotels
• Restaurants
• Farms
• Solar Power Systems
• Off-Grid Homes
• Holiday Bungalows
• Small Businesses

Technical Specifications

LCD Display Indicators

The integrated LCD screen displays the following real-time information:

Installation Guidelines

• Install the inverter indoors in a clean, dry, and well-ventilated location.
• Mount the unit securely on a solid wall using appropriate fasteners.
• Maintain adequate clearance around the inverter for proper airflow and cooling.
• Connect the battery bank using the correct cable size and polarity.
• Connect the solar PV array within the specified MPPT voltage range (40–450V DC, max 500V VOC).
• Connect AC input from the utility grid or generator.
• Connect AC output to the protected load distribution board.
• Configure the battery type (AGM, GEL, LiFePO₄, OP-LE, or Sealed Lead Acid) before operation.
• Pair the WiFi module with the mobile app for remote monitoring.
• Installation should be carried out by a qualified electrician or certified solar installer.

Key Features

• 24V Off-Grid Hybrid Solar Inverter
• 3.6KW Pure Sine Wave Output
• Batteryless Solar Operation
• 100A MPPT Solar Charger
• 100A AC Battery Charger
• Supports Solar + Grid + Battery Operation
• Supports Solar Only Mode
• Supports Lithium Batteries with BMS
• WiFi Remote Monitoring
• Mobile App & Web Portal Access
• Intelligent LCD Display
• Pure Sine Wave Technology
• High Solar Conversion Efficiency
• Compatible with CEB & LECO Power
• Designed for Sri Lankan Homes & Businesses
• Ideal for Power Cuts and Off-Grid Installations