Product Summary:
The Growatt 3kW SPF 3000TL LVM-ES Stackable Off-Grid Inverter is a compact, all-in-one solution designed for off-grid, backup, and small-scale energy systems. Delivering 3,000W of pure sine-wave output with support for up to 4,000W PV input, it provides reliable, efficient power for cabins, small homes, RVs, and portable energy setups.
This multifunctional unit integrates a high-frequency inverter, MPPT solar charge controller, and UPS module into one streamlined system – reducing installation complexity and cost. With a wide MPPT range of 120 – 250VDC, it enables longer solar string runs and simplified system design without the need for combiner boxes.
Designed to pair specifically with 48V HUSKY INV batteries, this inverter supports seamless communication and optimized performance for compact off-grid systems. With optional WiFi/GPRS monitoring, users can track system performance remotely for improved control and visibility.
Ships From: Texas, USA
Warranty: 2 Years
Support: Lifetime USA-Based Tech Support
Compatibility
Battery Compatibility (Off Grid Closed-Loop Communication):
- 48V HUSKY INV Batteries Only
System Compatibility:
- Designed for off-grid and backup power systems
- Supports solar + battery + generator input configurations
- Parallel capability up to 6 units (battery required)
- Ideal for cabins, RVs, small homes, and portable energy setups
Key Features
- 3,000W Output Power (PF=1) – Reliable energy for small off-grid systems
- Up to 4,000W PV Input – Efficient solar integration
- Wide MPPT Range (120–250VDC) – Simplifies wiring and system design
- Pure Sine Wave Output – Clean, stable power for electronics
- All-in-One Design – Inverter, MPPT controller, and UPS in one unit
- HUSKY INV Battery Integration – Optimized performance with compatible batteries
- Parallel Capability (Up to 6 Units) – Expand system capacity as needed
- UPS Functionality – Seamless transition during outages
- High-Frequency Design – Lightweight and compact
- Optional WiFi/GPRS Monitoring – Remote system visibility and control
- 80A Charging Current – Fast and efficient battery charging
- Maintenance-Free Operation – No routine servicing required
A compact, efficient off-grid inverter solution built specifically for HUSKY-based systems, delivering reliable power for everyday off-grid and backup use.
Features
- High-Frequency Pure Sine Waveform
- Integrated MPPT Charge Controller
- Integrated AC Transfer Switch
- High PV Input Voltage
- Configurable Off-Grid or Solar Input Priority
- Joint PV & Grid Load Support
- Equalization Charging Function
- Flexible Charge & Discharge Scheduling
- CAN/RS485 Protocols for BMS Communications
- WiFi Remote Monitoring
- Expandable up to 18kW
- 3-Phase & Split-Phase Output (6 units req.)
- In-Depth LCD Display
- Charging, Status, & Fault Indicators
- Lightweight & Compact
Suitable For
- 48V Battery Systems
- Residential Solar Systems
- Mid-Sized Off-Grid Systems
- Backup Power Systems
- Cabins and Small Campers
- Self-Consumption Applications
- Parallel Scalability
Inverter Downloads
DOWNLOADInverter Specifications
Features
- High-Frequency Pure Sine Waveform
- Integrated MPPT Charge Controller
- Integrated AC Transfer Switch
- High PV Input Voltage
- Configurable Off-Grid or Solar Input Priority
- Joint PV & Grid Load Support
- Equalization Charging Function
- Flexible Charge & Discharge Scheduling
- CAN/RS485 Protocols for BMS Communications
- WiFi Remote Monitoring
- Expandable up to 18kW
- 3-Phase & Split-Phase Output (6 units req.)
- In-Depth LCD Display
- Charging, Status, & Fault Indicators
- Lightweight & Compact
Suitable For
- 48V Battery Systems
- Residential Solar Systems
- Mid-Sized Off-Grid Systems
- Backup Power Systems
- Cabins and Small Campers
- Self-Consumption Applications
- Parallel Scalability
Inverter Downloads
Inverter Specifications
Frequently Asked Questions
Can the Growatt 3K run in parallel?
Yes, up to 6 units, which requires a battery. Six units in parallel gives you up to 18kW and supports three-phase or split-phase output. That makes it a way to start small and scale rather than buying a large inverter up front.
What batteries work with the Growatt 3K?
It is designed specifically to pair with 48V HUSKY INV batteries, and BigBattery lists those as the only batteries with closed-loop communication support on this unit. If you are building around a different battery, choose a different inverter.
Is 3kW enough for a small cabin?
For a cabin running lights, a fridge, a water pump and general outlets, yes. 3,000W with up to 4,000W of PV input covers small off-grid and backup setups, RVs and portable systems. Air conditioning or electric cooking pushes you to a larger inverter.
Does the Growatt 3K have a built-in MPPT?
Yes. It integrates a high-frequency inverter, an MPPT solar charge controller and a UPS module in one unit, with a wide 120 to 250VDC MPPT range. That wide range allows longer solar string runs and removes the need for a combiner box.
What is the 80A charging current for?
It is the maximum rate the unit can recharge your battery from grid or generator. At 80A a 5.12kWh 48V battery refills from empty in a little over an hour, which matters when you are running a generator and want to minimise its run time.
Growatt 3K Inverter
