3kW Off-Grid Solar Inverter – 48V, 80A MPPT, Pure Sine Wave, Stackable to 6 Units

3kW All-in-One Off-Grid Solar Inverter – 48V with 80A MPPT

This 3kW off-grid inverter combines a pure sine wave inverter, an 80A MPPT solar charge controller, and fast transfer switching in one compact unit. It’s designed for cabins, RVs, tiny homes, and home backup systems. Use one unit for 120V, pair two for 120/240V split phase, or connect up to six in parallel for up to 18kW.

Key Features

• 3,000W continuous / 6,000W surge: Pure sine wave output at 120V
• 80A MPPT solar charger: Up to 4,500W PV input
• 48V battery system: Compatible with LiFePO₄ and sealed lead-acid batteries
• Fast transfer: Under 10ms when switching between solar, battery, generator, or grid
• Stackable: 2 units for 120/240V split phase, up to 6 units (18kW) in parallel
• AC + solar charging: Up to 80A solar plus 60A AC charging
• Protections: Overload, short circuit, reverse polarity, and deep discharge
• BMS integration: Built-in CAN and RS-485 communication
• Lightweight design: Transformerless, 24.3 lb, wall-mountable
• Optional monitoring: Wi-Fi dongle (sold separately) for app monitoring and remote firmware updates

Specifications

• Rated AC output: 3,000W @ 120V AC, pure sine wave
• Surge power: 6,000W
• Max PV input power: 4,500W
• MPPT voltage range: 60–115V DC
• Max PV open circuit voltage: 145V
• Battery voltage: 48V nominal (40–60V range)
• Max solar charging current: 80A
• Max AC charging current: 60A
• Transfer time: <10ms
• Parallel capability: Up to 6 units; split phase with 2 units
• Inverter efficiency: Up to 92%
• MPPT efficiency: Up to 98%
• Communication: CAN, RS-485 (Wi-Fi optional)
• Dimensions (H × W × D): 17.3 × 12.8 × 4.7 in (440 × 325 × 120 mm)
• Weight: 24.3 lb (11 kg)
• Operating temperature: -4°F to 140°F (-20°C to 60°C)
• Certifications: CE, RoHS

Ideal For

• Off-grid cabins and tiny homes
• RVs and mobile setups
• Home backup power systems
• Scalable off-grid solar systems

FAQs

What batteries does it work with?
48V battery systems, including LiFePO₄ rack batteries and sealed lead-acid batteries.

Can I get 240V output?
Yes. Connect two units for 120/240V split phase.

How many units can be connected in parallel?
Up to six, for a total of 18kW.

Can it charge batteries from the grid or a generator?
Yes. It supports up to 60A AC charging in addition to 80A solar charging.

How fast does it switch to battery power?
In under 10 milliseconds.

Does it include Wi-Fi monitoring?
Wi-Fi monitoring requires an optional dongle, sold separately.

Does it need professional installation?
Installation by a licensed electrician or certified solar installer is recommended.