🔋 Growatt SPF 3500 ES 3.5KW 48V Off Grid Hybrid Solar Inverter
The Growatt SPF 3500 ES 3.5KW 48V Off-Grid Hybrid Solar Inverter is a powerful, efficient, and intelligent solar energy solution designed for homes, small businesses, and off-grid applications. With advanced hybrid technology, this inverter integrates solar power, battery storage, and grid supply to ensure uninterrupted electricity—especially important for Bangladesh where load shedding and low voltage are common.
This inverter combines three essential components in one unit: a pure sine wave inverter, an MPPT solar charge controller, and a battery charger. This all-in-one system reduces installation cost and simplifies operation while maximizing energy efficiency. It supports both on-grid backup and off-grid operation, making it highly flexible for different usage scenarios.
The built-in MPPT (Maximum Power Point Tracking) technology ensures maximum solar energy harvesting from panels, even in low sunlight conditions. With a wide MPPT voltage range, the inverter optimizes solar performance and improves overall system efficiency.
It supports lithium (LiFePO4), lead-acid, and GEL batteries, giving users flexibility based on budget and performance needs. Additionally, it can operate with or without batteries, allowing direct solar usage during the day and battery backup at night or during outages.
The inverter delivers a pure sine wave output, ensuring safe operation for sensitive electronics like TVs, computers, refrigerators, and other appliances. With high efficiency and intelligent power management, it reduces electricity bills and increases energy savings.
⚙️ GENERAL INFORMATION
- DC/AC ratio up to 1.2 for optimized system design
- 2× peak power capability for handling heavy load startup
- Output power factor up to 1.0 for maximum usable power
- Parallel operation support up to 6 units (expandable system)
- Multiple customizable working modes for different scenarios
- Compatible with Lithium, Lead-acid, and GEL batteries
- Supports WiFi & GPRS remote monitoring
- PVkeeper platform support for easy setup and configuration
- Timer-based charging and load control system
- Comprehensive Growatt warranty support (2 years)
🔧 Basic Specifications of Growatt SPF 3500 ES
- Rated Power: 3500W
- Battery Voltage: 48V DC
- Max PV Array Power: 4500W
- MPPT Voltage Range: 120V – 430V DC
- Max Charge Current: 60A
- Efficiency: Up to 93%
- Surge Power: 7000W
- Dimensions (W×H×D): 330 × 485 × 135 mm
- Weight: 11.5 kg
- Protection Level: IP20
⚡ Performance & Smart Features
The Growatt SPF 3500 ES is designed with intelligent energy management. It supports dual input sources—solar and grid—and automatically prioritizes solar power to reduce electricity costs. When solar energy is insufficient, the system seamlessly switches to battery or grid supply without interruption.
The inverter also supports parallel connection of up to 6 units, allowing system expansion as your energy demand increases. This makes it a future-proof investment for both residential and commercial users.
Its LCD display provides real-time monitoring of system performance, including battery status, load consumption, and solar generation. Optional WiFi/GPRS modules allow remote monitoring via mobile apps, giving users full control from anywhere.
🏠 Ideal Applications
- Home solar system
- Load shedding backup
- Small office or shop
- Rural off-grid electrification
- Small solar irrigation system
