As solar adoption grows across India, more homeowners and businesses are turning to Battery Energy Storage Systems (BESS) to ensure uninterrupted power even during grid outages. In this guide, we explain how to install a 10kWh battery with a 5kW inverter, and what you need to make the system safe, efficient, and future-ready.
Why Battery Energy Storage Is the Future
Solar panels generate power only during the day. Without a battery, unused electricity is sent to the grid. With a battery, you can store excess energy and use it anytime even at night or during a power cut.
Benefits of a battery-backed solar system:
- 24/7 energy independence
- Reduced electricity bills
- Backup during outages
- Energy export control and smart load management
System Overview: 10kWh Battery + 5kW Inverter
- Battery Type: Lithium-ion (preferred for longer life, faster charging)
- Battery Capacity: 10kWh (runs 8–10 hours of normal load)
- Inverter Rating: 5kW Hybrid Inverter (solar + battery + grid)
- Solar Input (optional): 4kW to 6kW solar panel array
- Mounting: Wall or floor-mounted battery rack
- Control Unit: BMS (Battery Management System) with mobile app
Step-by-Step Installation Process
1. Site Survey & Load Analysis
- Measure power consumption of all critical appliances
- Check available space for inverter and battery setup
- Ensure proper ventilation and dust-free environment
2. Mount Inverter and Battery
- Use metal brackets or battery racks for safety
- Place the 5kW inverter on a solid wall, near your main power DB
- Keep batteries in a dry, cool place, away from direct sunlight
3. Wiring & Connections
- Connect solar panels (if used) to inverter input
- Connect battery terminals using high-gauge DC cables
- Link the inverter to main DB (Distribution Box) using AC wire
- Use MC4 connectors, proper fuses, isolators, and earthing
4. BMS and Monitoring Setup
- Configure the Battery Management System (BMS)
- Connect Wi-Fi or mobile app for real-time performance monitoring
- Set up charging and discharging profiles
5. Testing and Commissioning
- Power up the inverter and test input/output
- Simulate a grid outage to check if battery backup works
- Ensure inverter synchronizes with solar, battery, and grid
Installation Safety Tips
- Always use certified technicians and BIS-approved components
- Use IS-standard cables and breakers
- Install a lightning arrestor and earthing rod for protection
- Avoid DIY connections—especially for lithium-ion systems
Cost of Setup in 2025 (Approx.)
| Component | Price Range (₹) |
|---|---|
| 10kWh Li-ion Battery | ₹4.5 – ₹5.5 lakh |
| 5kW Hybrid Inverter | ₹60,000 – ₹90,000 |
| Installation & Wiring | ₹20,000 – ₹30,000 |
| Total System Cost | ₹5.5 – ₹6.8 lakh |
Prices may vary based on brand, location, and configuration.
Final Word
Installing a 10kWh battery with a 5kW inverter gives you full control over your energy usage, helps during grid failures, and unlocks the true potential of your solar setup. Whether you’re building a smart home or want off-grid freedom, a well-installed BESS is the foundation of reliable and sustainable power.
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