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You need reliable 120V power for off-grid setups. This guide compares the best GROWATT power inverters with 120V based on published specifications. We evaluated 2 models to find the right fit for your home or cabin. The GROWATT 3500W Hybrid Solar Inverter leads the list. It includes an integrated MPPT charge controller for scalable expansion. This feature simplifies your solar installation. Our picks rely strictly on the data provided by manufacturers. We do not test these units ourselves. Read on to decide which inverter matches your energy needs.
Check output type and battery compatibility
You need pure sine wave output for sensitive electronics. Both listed models provide this. You must also match the battery type. The units support lithium and AGM batteries. Ensure your existing battery bank is compatible with the specific inverter model. This prevents damage to your equipment and ensures stable 120V power.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | GROWATT 3500W Hybrid Solar Inverter Best overall | Off-grid systems needing scalable 120V power | |
| 2 | GROWATT 3500W Off-Grid Solar Inverter Also great | off-grid homes needing scalable 120V power |
The best fit for you
- You need a hybrid inverter with an included MPPT charge controller – GROWATT 3500W Hybrid Solar Inverter – It includes an MPPT charge controller and supports 3500W pure sine wave output for off-grid use.
- You want to expand your system with parallel units – GROWATT 3500W Off-Grid Solar Inverter – This model supports parallel expansion and offers app control for your 3500W off-grid solar setup.
- You prefer a pure sine wave output for sensitive electronics – GROWATT 3500W Hybrid Solar Inverter – The 3500W model delivers clean pure sine wave power suitable for home and off-grid applications.
GROWATT 3500W Hybrid Solar Inverter
Best for: Off-grid systems needing scalable 120V power
- Voltage
- 120V
- Continuous Wattage
- 3500W
- Surge Wattage
- 7000W
- Waveform
- Pure Sine Wave
- DC Input Voltage
- 48V DC
- AC Output Voltage
- 120V AC
This GROWATT inverter delivers 3500W continuous and 7000W peak power at 120V AC. It uses pure sine wave output to protect sensitive electronics. The unit includes a built-in MPPT charge controller for efficient solar harvesting. You can operate it off-grid or with battery storage. It supports parallel operation for scalable power needs.
- 3500W continuous and 7000W surge power output
- Pure sine wave for sensitive electronics
- Built-in MPPT charge controller
- Supports parallel operation of up to 6 units
- Lower continuous wattage than the 10000W option on this list
- Heavier build at 26.5 pounds compared to lighter models
- You need a 120V pure sine wave inverter for off-grid use
- You want to expand your system with parallel units
- You prefer a Tier-1 brand with US warranty support
- You require more than 3500W continuous power
- You need a lighter unit for frequent transport
- You are looking for a model with 10000W capacity
Verdict: GROWATT 3500W 120V Hybrid Inverter fits users who need reliable 120V power with scalable expansion options. It is ideal for off-grid setups requiring pure sine wave output and integrated solar charging.
GROWATT 3500W Off-Grid Solar Inverter
Best for: off-grid homes needing scalable 120V power
- Voltage
- 120V
- Continuous Wattage
- 3500W
- Surge Wattage
- 7000W
- Waveform
- Pure Sine Wave
- DC Input Voltage
- 48V
- AC Output Voltage
- 120V Single-Phase
This GROWATT unit delivers 3500W continuous and 7000W surge power at 120V single-phase output. It uses a pure sine wave for sensitive electronics. The 48V DC input supports lithium or AGM batteries. You can control it via a smartphone app. It scales by linking up to six units. This model suits off-grid homes needing reliable, clean power.
- 3500W continuous and 7000W surge output
- 120V pure sine wave for sensitive electronics
- Smartphone app for remote monitoring and control
- Parallel operation supports up to 6 units
- Heavier at 26.5 pounds compared to lighter alternatives
- Lower continuous wattage than the 3500W hybrid model on the list
- You need 120V power for off-grid cabins
- You want to scale your system with parallel units
- You prefer smartphone app control over physical remotes
- You require more than 3500W continuous power
- You need a built-in battery for immediate backup
- You prefer a lighter, more portable unit
Verdict: GROWATT 3500W 48V Solar Inverter fits off-grid users needing 120V power with app control. It suits those planning to expand their system with parallel units.
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 inverter
Check pure sine wave output
You need pure sine wave output for sensitive electronics. Both GROWATT models listed here provide this feature. This waveform mimics utility grid power, protecting devices like laptops and medical equipment from damage. If you run standard appliances, modified sine wave might suffice. However, for reliable off-grid living, pure sine wave is the safer choice. Verify this spec in the product attributes before buying to ensure your critical loads remain safe and functional during outages.
Verify battery type compatibility
Ensure your battery bank matches the inverter requirements. Both models support Lithium and AGM battery types. You must confirm your existing or planned batteries align with these chemistries. Using incompatible batteries can lead to poor performance or damage. Check the specifications sheet for the supported battery types. If you plan to use gel or flooded lead-acid batteries, you may need a different model. Matching the chemistry ensures efficient charging and long-term system stability.
Consider integrated charge control
Look for an inverter with an included MPPT charge controller. The top pick, the GROWATT 3500W Hybrid, includes this component. This integration simplifies your off-grid setup by combining solar charging and power inversion. You save space and reduce wiring complexity. If you choose the second model, it may require a separate controller. Check the included components list carefully. Having everything in one unit streamlines installation and maintenance for your solar power system.
Assess parallel expansion needs
Determine if you need to scale your power later. The second model supports parallel expansion, allowing you to connect multiple units. This feature is useful if your power needs might grow over time. You can increase total wattage without replacing the entire system. Check the technical specifications for parallel operation capabilities. If you require high capacity now, a single unit might suffice. If you plan to expand, ensure the model supports linking units for higher output.
Evaluate physical dimensions and weight
Check the size and weight for your installation space. Both models measure 19.1 inches in height and weigh 26.5 pounds. You need adequate clearance for ventilation and mounting. Measure your intended location before purchasing. Ensure the wall or floor can support the weight. The compact design fits most off-grid cabins or RVs. Verify that your mounting hardware is compatible with the unit's dimensions. Proper installation ensures safety and optimal airflow for the inverter's longevity.
Frequently asked questions
Does the GROWATT 3500W inverter include a charge controller?
The GROWATT 3500W Hybrid Solar Inverter comes with an integrated MPPT charge controller. This component optimizes solar energy harvest for your battery bank. The second 3500W model listed does not include this component in its package. You must verify which unit fits your existing solar array setup.
What battery types are compatible with these GROWATT inverters?
Both listed GROWATT models support lithium and AGM battery types. This flexibility allows you to use modern lithium banks or traditional lead-acid AGM batteries. Ensure your battery bank voltage matches the inverter requirements. The hybrid model integrates well with these storage options for off-grid reliability.
Can I run these inverters in parallel for more power?
The GROWATT 3500W Off-Grid Solar Inverter supports parallel expansion. You can connect multiple units to increase total output capacity. This feature suits users planning to scale their off-grid system over time. The hybrid model focuses on integrated solar charging rather than parallel scalability in its listed specifications.
Is the output waveform pure sine wave?
Yes, both GROWATT 3500W inverters provide pure sine wave output. This clean power mimics utility grid electricity. It is safe for sensitive electronics like laptops and medical devices. Avoid modified sine wave inverters for these devices to prevent potential damage or malfunction during operation.
What are the physical dimensions of the GROWATT 3500W inverter?
The inverter 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. Ensure your installation area has adequate ventilation for the white casing and internal components.
Is this inverter suitable for off-grid homes?
Yes, both models are designed for off-grid systems. They provide 120V power for home use without grid connection. The hybrid version includes solar charging capabilities. The off-grid model offers app control for remote monitoring. Both fit cabins or remote homes needing reliable power.
