The Exide Star 900VA InvaMaster (2025) is one of India’s most reliable home inverter systems, designed to deliver consistent power backup with high efficiency. As frequent power cuts continue to affect households and small businesses, Exide — one of the most trusted battery brands in India — ensures that comfort and productivity are never interrupted.
Known for its robust design, intelligent features, and durable battery compatibility, the Exide Star 900VA InvaMaster offers a perfect balance between performance and affordability. Whether you’re powering a home, shop, or small office, this inverter provides clean, stable energy that protects your appliances and keeps your day running smoothly.
Design and Build: Compact, Durable, and Modern
The Exide Star 900VA InvaMaster is built with practicality and reliability in mind. Its compact size ensures easy placement in homes, while its tough exterior guarantees long-term use even in harsh environments.
Design Highlights:
-
Sleek and compact rectangular design
-
Shock-resistant ABS body for extra safety
-
Ventilated outer shell for better heat dissipation
-
LED status indicators for charging, overload, and fault alerts
-
Easy front-panel control buttons
-
Lightweight (approximately 10.5 kg) for easy handling
Its well-ventilated structure prevents overheating and ensures the inverter performs efficiently even in long backup cycles.
Technical Specifications and Load Capacity
At the core of the Exide Star 900VA InvaMaster lies a pure sine wave inverter designed for smooth and efficient operation. This model is particularly popular because it supports a wide range of appliances without fluctuations or electrical noise.
Technical and Load Specifications:
| Parameter | Specification |
|---|---|
| Model Name | Exide Star 900VA InvaMaster |
| Rated Power | 900 VA / 12V system |
| Output Waveform | Pure Sine Wave |
| Input Voltage | 100V – 290V ± 10V |
| Output Voltage | 230V ± 10V |
| Frequency | 50Hz ± 0.1Hz |
| Efficiency | >90% |
| Changeover Time | <10 milliseconds |
| Load Capacity | Up to 720 watts |
Supported Appliances (Typical Setup):
-
4 Ceiling Fans (70W each)
-
4 Tube Lights / LED Bulbs
-
1 Television (32–42 inch)
-
1 Wi-Fi Router or Computer
-
1 Refrigerator (optional during power cuts)
This makes it suitable for 2–3 BHK homes, small offices, and retail shops, where multiple electrical appliances are used simultaneously.
Battery Compatibility and Charging Efficiency
The inverter is compatible with a wide range of Exide batteries and third-party tubular or flat-plate batteries. Its advanced 3-stage intelligent charging system ensures battery health and faster recovery after power outages.
Battery Details and Compatibility:
| Parameter | Specification |
|---|---|
| Recommended Battery Type | Tubular / Flat Plate / SMF |
| Nominal Battery Voltage | 12V |
| Recommended Battery Capacity | 100Ah – 220Ah |
| Charging Current | Up to 15A (adaptive) |
| Charging Type | Intelligent 3-stage charging (Boost, Absorb, Float) |
| Battery Charging Time | 6–8 hours (for 150Ah battery) |
The microcontroller-based charging algorithm automatically adjusts to the battery condition, ensuring longer lifespan and consistent performance over time.
Backup Time Estimation
Backup time depends on the battery capacity and the number of devices connected. Below is an approximate backup chart to help you understand how long the Exide Star 900VA InvaMaster can power your setup.
Estimated Backup Time Chart:
| Battery Capacity | Load (Watts) | Backup Time (Approx.) |
|---|---|---|
| 100Ah | 400W | 2.5–3 hours |
| 135Ah | 400W | 3.5–4 hours |
| 150Ah | 400W | 4.5 hours |
| 180Ah | 400W | 5–5.5 hours |
| 220Ah | 400W | 6–7 hours |
The inverter’s efficiency rate above 90% ensures that every watt of energy is utilized effectively, reducing power wastage.
Features and Protection Systems
Exide has equipped the InvaMaster 900VA with a range of features that prioritize safety, durability, and ease of use.
Key Features:
-
Pure Sine Wave Output: Protects sensitive electronics like computers, TVs, and routers.
-
Overload Protection: Automatically shuts down in case of excessive load.
-
Deep Discharge Protection: Prevents battery damage by cutting off supply at critical voltage.
-
Short Circuit Protection: Instantly cuts off output to prevent electrical hazards.
-
Smart Thermal Management: Auto fan speed adjustment based on temperature.
-
LCD/LED Indicators: Displays system status, charging level, and errors.
-
Auto Reset Function: Resumes operation automatically after overload or fault correction.
These features make the InvaMaster safe, stable, and convenient for both residential and commercial use.
Performance and Energy Efficiency
The Exide Star 900VA InvaMaster offers excellent voltage regulation and noise-free performance, ensuring that sensitive devices remain protected during power fluctuations.
Performance Highlights:
-
Quick switch-over time (<10 ms) ensures uninterrupted performance for computers and routers.
-
Low harmonic distortion keeps appliances running smoothly.
-
High surge handling capability to start motors and refrigerators.
-
32-bit DSP (Digital Signal Processor) for stable output management.
This ensures that even heavy-duty appliances run safely without the humming or flickering often found in low-cost inverters.
Installation and Maintenance
Installing the Exide Star 900VA InvaMaster is simple, requiring basic wiring connections between the inverter, battery, and home power line. It can be easily wall-mounted or kept on the floor.
Maintenance Tips:
-
Ensure proper ventilation for heat dissipation.
-
Check and clean battery terminals every 3–4 months.
-
Keep the inverter in a dry place, away from moisture.
-
Always use Exide-approved cables for optimal performance.
Regular care ensures years of reliable service and consistent power output.
Price and Availability (October 2025 Update)
The Exide Star 900VA InvaMaster remains one of the most affordable and durable inverters in its category.
Expected Price Table:
| Model | Compatibility | Expected Price (Ex-Showroom) |
|---|---|---|
| Exide Star 900VA InvaMaster | 12V / 900VA | ₹6,499 – ₹6,999 |
Battery Add-on Prices (Recommended):
-
Exide IT500 150Ah Tubular Battery – ₹14,500 (approx.)
-
Exide InstaBrite 135Ah – ₹12,800 (approx.)
The inverter is available across Exide-authorized retailers, electrical shops, and major e-commerce platforms in India.
Why Choose Exide Star 900VA InvaMaster
The Exide Star 900VA InvaMaster stands out for its balance of durability, technology, and affordability.
Reasons to Buy:
-
Pure sine wave output ensures safe appliance performance
-
Efficient battery management for longer life
-
Ideal for medium household load capacity (fans, lights, TVs)
-
Trusted brand with nationwide service support
-
Compact, noise-free, and reliable during long power cuts
It’s an excellent solution for anyone looking for steady, clean, and economical power backup.
Conclusion: Reliable Power for Every Home
The Exide Star 900VA InvaMaster continues to be a top choice among Indian households for its unmatched combination of power efficiency, durability, and safety. Its pure sine wave output ensures smooth operation for all devices, while intelligent charging enhances battery life and performance.
If you’re looking for a long-lasting inverter system for your home or small business, the InvaMaster 900VA from Exide is a dependable and future-ready choice that guarantees peace of mind during every power outage.
FAQs
What is the load capacity of the Exide Star 900VA InvaMaster?
It supports a total load of up to 720 watts, ideal for 3–4 fans, 4 lights, and a television.
How long does the inverter provide backup?
With a 150Ah battery, it can offer 4.5–5 hours of backup depending on load usage.
Is it suitable for computers and LED TVs?
Yes, its pure sine wave output makes it completely safe for sensitive electronic appliances.
Can it be used with any battery brand?
While it works with other brands, Exide batteries are recommended for maximum performance and lifespan.
What is the price of Exide Star 900VA InvaMaster in India?
The expected price in 2025 ranges from ₹6,499 to ₹6,999 (ex-showroom).
Click here to know more.