Product Description
Powerful 6.5KW Solar Inverter for Homes & Businesses in Sri Lanka
The Unitec VMH 6.5K Pure Sine Wave Off-Grid Hybrid Solar Inverter is a premium high-capacity 48V inverter designed for residential, commercial, industrial, and solar energy applications throughout Sri Lanka. Built to handle increasing electricity demands and frequent CEB and LECO power cuts, this advanced hybrid inverter combines solar charging, battery charging, inverter functionality, and smart monitoring into a single powerful unit.
With an impressive 6500W Pure Sine Wave output, integrated 120A MPPT Solar Charge Controller, high-speed 120A AC Battery Charger, and WiFi monitoring, the Unitec VMH 6.5K delivers reliable energy independence while maximizing solar power generation.
Works Directly from Solar Panels – Even Without Batteries
One of the biggest advantages of the Unitec VMH 6.5K is its ability to operate directly from solar panels even when batteries are not connected.
Unlike many hybrid inverters available in the Sri Lankan market, the VMH 6.5K supports:
- Solar-only operation
- Solar + Battery operation
- Solar + Grid operation
- Complete Off-Grid operation
- Future battery expansion
This allows customers to start with solar panels and gradually expand their system without requiring immediate battery investment.
High Capacity 6500W Pure Sine Wave Output
The VMH 6.5K delivers a continuous output of 6500W (6.5KVA) of clean Pure Sine Wave electricity.
Ideal for powering:
- Large Homes
- Villas
- Offices
- Restaurants
- Supermarkets
- Workshops
- Computer Systems
- Air Conditioners
- Refrigerators
- Freezers
- Pumps
- CCTV Systems
- Servers
- Industrial Equipment
Pure Sine Wave technology ensures stable and safe power for sensitive electronics and motor-driven appliances.
Massive 9000W Solar Capacity
Designed for serious solar installations, the VMH 6.5K supports up to 9000W of solar panels.
Solar Charging Features
- Maximum PV Array Power: 9000W
- Maximum MPPT Charge Current: 120A
- Maximum Solar Voltage (VOC): 500VDC
- Minimum Solar Voltage: 60VDC
- Maximum Solar Input Current: 28A
The advanced MPPT controller continuously tracks the optimal solar operating point, maximizing energy harvest throughout the day.
Fast 120A Battery Charging
The integrated high-capacity AC charger provides rapid battery charging when grid power or a generator is available.
AC Charging Features
- AC Input: 230V AC
- Frequency: 50/60Hz
- Maximum AC Charge Current: 120A
- Default Charge Current: 60A
- Maximum Combined PV + AC Charging Current: 120A
- DC Charging Voltage: 54VDC
This ensures batteries are quickly restored and ready for backup operation.
Supports Multiple Battery Technologies
The Unitec VMH 6.5K is compatible with a wide range of battery technologies.
Supported Batteries
- AGM Batteries
- GEL Batteries
- Sealed Lead Acid Batteries
- OP-LE Batteries
- LiFePO4 Batteries
- Lithium Batteries with BMS Communication
This flexibility allows users to select the most suitable battery solution based on budget, backup requirements, and future expansion plans.
Intelligent WiFi Monitoring
Monitor your solar power system remotely using the built-in WiFi monitoring capability.
Users can access:
- Solar Generation Data
- Battery Status
- Charging Information
- Load Consumption
- System Performance
- Historical Reports
- Fault Notifications
- Alarm Notifications
Monitoring can be performed through:
- Mobile Application
- Web Portal
- Remote Dashboard Access
This provides complete visibility over the performance of your solar installation from anywhere.
Intelligent LCD Display
The front LCD display provides real-time information about system operation.
Display Indicators Include
- AC Input Status
- Solar PV Input Status
- Inverter Operation Status
- Load Output Status
- Battery Status
- Battery Charging Status
- Alarm Codes
- Fault Codes
- Output Information
This makes monitoring and troubleshooting simple and user-friendly.
Designed for Sri Lankan Conditions
The Unitec VMH 6.5K is specifically suited for the growing demand for reliable backup power and solar energy solutions in Sri Lanka.
Whether connected to:
- CEB Power Supply
- LECO Power Supply
- Solar Panels
- Generator Systems
- Battery Banks
the inverter intelligently manages power sources to provide continuous electricity while maximizing solar energy utilization.
Ideal Applications
Perfect for:
- Large Homes
- Offices
- Hotels
- Restaurants
- Retail Stores
- Factories
- Farms
- Solar Projects
- Off-Grid Locations
- Apartments
- Educational Institutions
- Commercial Buildings
Technical Specifications
| Specification | Details |
|---|---|
| Brand | Unitec |
| Model | VMH 6.5K |
| Inverter Type | Pure Sine Wave Off-Grid Hybrid Solar Inverter |
| Rated Power | 6.5KVA / 6500W |
| Battery System Voltage | 48VDC |
| Battery Input Current | 135A |
| AC Output Voltage | 230V AC |
| Output Frequency | 50/60Hz |
| Output Current | 29.5A |
| Power Factor | 1.0 |
| AC Input Voltage | 230V AC |
| AC Input Frequency | 50/60Hz |
| Maximum AC Charge Current | 120A |
| Default AC Charge Current | 60A |
| DC Charging Voltage | 54VDC |
| Maximum Combined Charge Current (PV + AC) | 120A |
| Solar Charger Type | MPPT |
| Maximum PV Array Power | 9000W |
| Maximum MPPT Charge Current | 120A |
| Maximum Solar Voltage (VOC) | 500VDC |
| Minimum Solar Start Voltage | 60VDC |
| Maximum Solar Input Current | 28A |
| Battery Compatibility | AGM, GEL, Sealed Lead Acid, OP-LE, LiFePO4, Lithium (BMS) |
| Solar Only Operation | Yes |
| Batteryless Operation | Yes |
| WiFi Monitoring | Yes |
| Mobile App Monitoring | Yes |
| Web Portal Monitoring | Yes |
LCD Display Information
| Display Icon | Description |
|---|---|
| AC Input Icon | Utility/Grid Power Available |
| PV Input Icon | Solar Power Available |
| Inverter Icon | Inverter Operating Mode |
| Load Icon | Connected Load Status |
| Battery Icon | Battery Charge & Discharge Status |
| Alarm Icon | Warning Notification |
| Fault Icon | System Fault Indicator |
| Charging Icon | Battery Charging Active |
| Output Icon | AC Output Active |
Installation Guidelines
- Install indoors in a dry, dust-free, and ventilated location.
- Mount securely on a solid wall.
- Maintain adequate clearance around the unit for cooling.
- Connect the battery bank using appropriate cable sizes and correct polarity.
- Connect solar panels ensuring voltage remains within inverter limits.
- Connect AC utility input from CEB, LECO, or generator source.
- Connect AC output to the dedicated load distribution board.
- Configure the battery type before commissioning.
- Connect WiFi monitoring for remote access.
- Installation should be carried out by a qualified solar technician or electrician.
Key Features
- 48V Off Grid Hybrid Solar Inverter
- 6500W Pure Sine Wave Output
- Batteryless Solar Operation
- 120A MPPT Solar Charge Controller
- 120A AC Battery Charger
- Supports Up To 9000W Solar Panels
- Supports Lithium Batteries with BMS
- Solar + Grid + Battery Operation
- Mobile App Monitoring
- Web Portal Monitoring
- Intelligent LCD Display
- High Solar Conversion Efficiency
- Reliable Backup for Power Cuts
- Compatible with CEB & LECO Supply
- Designed for Sri Lankan Solar Systems








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