As Amazon Associates, we earn from qualifying purchases. This means we may receive a small commission at no extra cost to you if you click through and make a purchase.
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
Finding the best GROWATT power inverters for lithium requires checking key specs. We compared 2 models using only the data published on their listings. The GROWATT 3500W Hybrid Solar Inverter leads this list because it offers 3500W continuous power and 48V lithium compatibility. This pure sine wave output ensures safe operation for off-grid homes. You need reliable voltage stability to run sensitive electronics without damage. Our selection focuses on wattage, battery type, and physical dimensions. This guide helps you decide which unit fits your specific energy storage needs.
Check 48V Lithium Compatibility First
You must verify that the inverter supports 48V lithium batteries. Both top picks offer 3500W continuous power and pure sine wave output. The hybrid model includes an MPPT charge controller. The off-grid version focuses on parallel expansion. Match your battery voltage to avoid incompatibility issues with your lithium bank.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | GROWATT 3500W Hybrid Solar Inverter Best overall | Off-grid homes needing 48V lithium compatibility | |
| 2 | GROWATT 3500W Off-Grid Solar Inverter Also great | off-grid solar systems with expansion needs |
The best fit for you
- You need 48V lithium compatibility for off-grid homes – GROWATT 3500W Hybrid Solar Inverter – It offers 3500W continuous power and pure sine wave output for reliable off-grid use.
- You want scalable parallel operation for expanding solar systems – GROWATT 3500W Hybrid Solar Inverter – The unit supports scalable parallel operation alongside its 3500W continuous power capacity.
- You need certified power for off-grid solar expansion – GROWATT 3500W Off-Grid Solar Inverter – It provides certified, scalable off-grid power with pure sine wave safety for system growth.
GROWATT 3500W Hybrid Solar Inverter
Best for: Off-grid homes needing 48V lithium compatibility
- Battery Type
- Lithium, AGM
- Continuous Wattage
- 3500W
- Surge Wattage
- 7000W
- Waveform
- Pure Sine Wave
- DC Input Voltage
- 48V DC
- AC Output Voltage
- 120V AC
This GROWATT hybrid inverter delivers 3500W continuous and 7000W peak power on a 48V DC system. It outputs clean pure sine wave energy at 120V AC, making it safe for sensitive electronics. The unit includes a built-in MPPT charge controller for efficient solar harvesting. You can pair it with 48V lithium or lead-acid batteries, or run it directly on solar power during the day. It supports parallel operation for scalable power needs.
- 3500W continuous and 7000W peak output
- Pure sine wave for sensitive electronics
- Built-in MPPT charge controller
- Supports 48V lithium and lead-acid batteries
- Parallel operation for up to 21 kW
- 3500W continuous rating is lower than the 3500W off-grid system listed
- 26.5-pound weight adds bulk to the installation
- 120V AC output limits use in split-phase 240V systems
- You need a reliable 48V hybrid inverter for off-grid homes
- You want to pair the inverter with 48V lithium batteries
- You require pure sine wave power for sensitive appliances
- You need more than 3500W of continuous power
- You require a 240V AC output system
- You prefer a lighter or more compact unit
Verdict: GROWATT 3500W Hybrid Inverter offers solid 3500W continuous power and pure sine wave output for off-grid homes. It fits users who need 48V lithium compatibility and scalable parallel operation.
GROWATT 3500W Off-Grid Solar Inverter
Best for: off-grid solar systems with expansion needs
- Battery Type
- Lithium, AGM
- Continuous Wattage
- 3500W
- Surge Wattage
- 7000W
- Waveform
- Pure Sine Wave
- DC Input Voltage
- 48V
- AC Output Voltage
- 120V Single-Phase
This GROWATT inverter delivers 3500W continuous and 7000W surge power on a 48V DC input. It outputs clean 120V pure sine wave AC. The unit includes a built-in MPPT charge controller for efficient solar harvesting. It supports parallel operation for scalable power up to 21 kW. This system suits off-grid homes or cabins needing reliable, certified solar energy management.
- 3500W continuous and 7000W peak output
- Pure sine wave protects sensitive electronics
- UL 1741 and CSA certified
- Supports parallel operation up to 6 units
- Built-in MPPT charge controller
- Lower continuous wattage than the 3500W hybrid model
- Requires 48V battery system
- Heavier at 26.5 pounds
- You need certified off-grid solar power
- You want pure sine wave output
- You plan to expand system capacity
- You require grid-tied functionality
- You need higher than 3500W continuous power
- You prefer a lighter portable unit
Verdict: GROWATT 3500W Off-Grid Solar Inverter fits buyers needing certified, scalable off-grid power. It suits those prioritizing pure sine wave safety and parallel expansion.
Specifications side by side
| Spec | GROWATT 3500W Hybrid Solar Inverter | GROWATT 3500W Off-Grid Solar Inverter |
|---|---|---|
| Continuous Wattage | 3500W | 3500W |
| Surge Wattage | 7000W | 7000W |
| Waveform | Pure Sine Wave | Pure Sine Wave |
| DC Input Voltage | 48V DC | 48V |
| AC Output Voltage | 120V AC | 120V Single-Phase |
| Remote Control | Smartphone app | Smartphone app |
| Features | Pure Sine Wave | Pure Sine Wave |
| Intended Use | Home, Off-Grid | Home, Off-Grid |
| Voltage | 120V | 120V |
| Recommended Use | Off-Grid Systems | Off-Grid Systems |
| Included Components | Inverter, MPPT Charge Controller | Inverter |
| Battery Type | Lithium, AGM | Lithium, AGM |
| Technology | MPPT | – |
| Dimensions | 13 × 5.3 × 19.1 inches | 13 × 5.3 × 19.1 inches |
| Weight | 26.5 pounds | 26.5 pounds |
| Size | 3500W | 3500W WITH 2*5120Wh |
| Color | White | White |
| Model | SPF 3500TL LVM-US | SPF 3500TL LVM-US |
How to Choose the Right GROWATT Inverter
Verify Battery Compatibility
You must ensure the inverter supports your specific battery chemistry. Both models listed here accept lithium and AGM batteries. This dual compatibility gives you flexibility if you plan to upgrade your storage system later. Always check the manufacturer’s specification sheet for the exact battery types supported. Mismatched chemistry can lead to poor performance or damage. Confirm that the voltage matches your bank, typically 48V for these units, before finalizing your purchase.
Check Continuous Wattage
Look at the continuous power rating to see what appliances you can run simultaneously. Both top picks offer 3500W of continuous power. This capacity handles most household essentials like refrigerators and lights. It does not support high-draw items like large air conditioners. If you need more power, consider parallel operation. The hybrid model supports scalable parallel operation. This allows you to link multiple units for higher output when your energy demands increase significantly.
Confirm Waveform Type
Pure sine wave output is essential for sensitive electronics. Both inverters provide this clean power signal. It protects devices like computers, medical equipment, and audio systems from damage. Modified sine waves can cause overheating or malfunction in these tools. Ensure your most critical gear is rated for pure sine wave input. This feature is standard on both models, so you can power delicate items safely without worrying about power quality issues.
Consider Included Components
Check what comes in the box to simplify your setup. The hybrid model includes an MPPT charge controller. This component maximizes solar energy harvest efficiently. You do not need to buy a separate controller for solar integration. The off-grid version lists only the inverter. You may need to source additional components separately. This difference affects your total system cost and installation complexity. Review the included components list carefully before deciding which unit fits your existing infrastructure.
Assess Physical Dimensions
Measure your installation space before buying. Both units share identical dimensions of 19.1 inches high, 13 inches long, and 5.3 inches wide. They also weigh 26.5 pounds each. This consistent size makes mounting predictable if you plan to add more units later. Ensure your enclosure or wall space can accommodate these measurements. Leave room for ventilation to prevent overheating. The compact form factor allows for flexible placement in tight off-grid setups or utility rooms.
Frequently asked questions
Can GROWATT inverters run lithium batteries safely?
Yes, the listed GROWATT models support lithium battery chemistry. Both the hybrid and off-grid options explicitly list lithium as a compatible battery type. This ensures safe charging and discharging cycles for your lithium storage system without requiring additional converters or adapters.
What is the continuous power output of these GROWATT inverters?
Both top picks deliver 3500W of continuous power. This capacity allows you to run multiple household appliances simultaneously. The hybrid model includes an MPPT charge controller for efficient solar input, while the off-grid version focuses on parallel expansion for higher total capacity.
Do these inverters produce clean power for sensitive electronics?
Yes, both models provide pure sine wave output. This waveform mimics utility grid power, protecting sensitive devices like laptops and medical equipment from damage. It is essential for off-grid homes where power quality must match standard household standards for reliable operation.
Can I connect multiple GROWATT inverters together?
Yes, the systems support scalable parallel operation. This feature allows you to link multiple units to increase total power output. It is ideal for expanding your solar system as your energy needs grow, ensuring you have sufficient capacity for larger loads.
What are the physical dimensions of the GROWATT 3500W inverter?
The unit measures 19.1 inches in height, 13 inches in length, and 5.3 inches in width. It weighs 26.5 pounds. These dimensions allow for wall mounting in most utility spaces. The compact footprint helps save space in off-grid setups.
Is an MPPT charge controller included with the hybrid model?
Yes, the GROWATT 3500W Hybrid Solar Inverter includes an MPPT charge controller. This component optimizes solar energy harvest from your panels. It streamlines your setup by combining inversion and solar charging management in a single unit for efficient off-grid performance.
