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Growatt SPF 3500TL LVM-US
Off-Grid PV Inverter
$799.00
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Off-grid inverter designed for 120V single-phase systems
- Up to 4500 W PV power at 120–225 V DC; Max. 280 V DC open-circuit voltage; 80 A charging current
- Pure Sine Wave, 3500W rated power with 7000W peak capacity
- Supports 48V lithium and lead-acid batteries (AGM/Sealed, Gel, Flooded)
- Supports off-grid, battery-priority, solar-priority, grid- or generator-assist
- Supports parallel operation of up to 6 units, allowing scalable power up to 21 kW
- Perfect for small homes, cabins, RVs, and remote cabins, as well as emergency backup systems during grid outages
- Plug-and-play design and intuitive wiring layout
- Easy setup and monitoring via smartphone
- UL 1741 and CSA certified
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2-year product warranty
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Growatt SPF 3500TL LVM-US Off-Grid PV Inverter
$799.00 USD
3500W Off-Grid Solar System
Free Yourself from the Grid with Energy Independence！
Our off-grid inverters deliver reliable, renewable power for remote areas or backup needs. Cut your electricity bills, enjoy effortless installation, and benefit from long-term savings and peace of mind.
4500W Solar Input
for a Various Solar Setups
Broad Battery Compatibility
Freedom to choose the battery that fits your needs. The SPF 3500TL LVM-US seamlessly works with 48V lithium and lead-acid batteries, making system expansion and future upgrades simple and worry-free.
All-Round Protection
Engineered with multiple built-in safety mechanisms, the SPF 3500TL LVM-US delivers reliable power while protecting your energy system from unexpected electrical and environmental challenges.
UL 1741 Certified
Safety & Grid Reliability
Designed to meet UL 1741 standards, delivering trusted safety, stable performance, and secure integration into U.S. residential and hybrid solar energy systems.
FCC Certified
for Trusted U.S. Use
Fully compliant with FCC standards, ensuring reliable operation with minimal electromagnetic interference for safe integration into U.S. residential and off-grid energy systems.
Power Your Home with Confidence
Connect two units in split-phase configuration to deliver 120/240V output, supporting larger household appliances and higher-power loads. With parallel scalability, the SPF 3500TL LVM-US provides greater installation flexibility and room for future energy expansion.
Adaptive Power Logic for Every Scenario
With intelligent multi-source power management, the SPF 3500TL LVM-US seamlessly adjusts to changing energy conditions—ensuring optimized performance whether in backup, off-grid, or hybrid applications.
Expand Up to 6 Units in Parallel
Scale your energy system effortlessly by connecting up to 6 units in parallel, delivering significantly higher output and capacity for demanding residential or off-grid applications while maintaining stable, synchronized performance.
Remote Power Management Made Easy
Monitor and control your solar system anytime, anywhere with optional remote connectivity. The SPF 3500TL LVM-US enables smart energy oversight, helping you optimize performance, track system status, and manage power usage with ease.
Product Overview
Packaging List
FAQs
1. What makes this inverter different from basic inverters?
Unlike basic inverters, it integrates solar MPPT charging, battery inverter, and AC charging in one unit. This simplifies system design, improves efficiency, and reduces the need for multiple separate components.
2. What is the SPF 3500TL LVM-US used for?
The SPF 3500TL LVM-US is a 3.5kW off-grid inverter designed for residential and small backup power systems. It integrates a solar charger, AC charger, and inverter into one unit, making it ideal for homes, cabins, RVs, and energy storage systems.
3. Is the SPF 3500TL LVM-US grid-tied or off-grid?
It is an off-grid inverter. It is designed to operate independently from the utility grid and is commonly used in standalone solar + battery systems or backup power setups.
4. What battery types are compatible with this inverter?
The inverter supports 48V battery systems, including lithium (LiFePO₄) and lead-acid batteries such as AGM, Gel, and Flooded types. Lithium batteries are recommended for better efficiency and longer lifespan.
5. What is the output power of the SPF 3500TL LVM-US?
It provides 3,500W continuous output power with high surge capability (up to 7,000W peak), allowing it to support heavy startup loads such as refrigerators, pumps, and power tools.
6. What is the solar input capacity?
The inverter supports high-voltage PV input with built-in MPPT technology, enabling efficient solar energy harvesting and flexible PV array design for different installation scenarios.
7. Can it charge batteries from both solar and grid/generator?
Yes. The SPF 3500TL LVM-US supports dual charging sources, allowing batteries to be charged via solar panels and an AC source such as the grid or a generator for continuous power availability.
8. Does it support remote monitoring?
Yes. With optional communication modules, users can monitor system performance, battery status, and solar production through the Growatt monitoring platform and mobile app.
9. What appliances can it run?
It can power most essential household and off-grid appliances such as refrigerators, lights, fans, TVs, routers, water pumps, and small kitchen appliances, depending on system design.
10. Is installation complicated?
The SPF 3500TL LVM-US is designed for relatively straightforward installation with clear wiring terminals and integrated functions. However, professional installation is recommended for safety and optimal performance.