4000W DC 12V Pure Sine Wave Inverter With Charger - LFP4K12V120VSG

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Product Highlight

• ★ This LFP Series Pure Sine Wave Inverter is a combination of an inverter, battery charger, and AC auto-transfer switch. Low frequency, low Idle Current, BTS cable, remote control.

• ★ This 4000-watt inverter charger requires 120VAC input and can provide 120VAC output power for the appliances, and it can output 50 or 60Hz via the SW4.

• ★ AC/Battery Priority: Our inverter is designed with AC priority by default, you can choose the battery priority by SW5 switch.

• ★ Adjustable Charging Current: The max charge current can be adjusted from 0%-100% via a liner switch. 

• ★ Auto Gen Start: The inverter can start up a generator when the battery voltage goes low, and turn the generator off after battery charging is finished.

Features 

• 4000W Low-Frequency Pure Sine Inverter With Charger.

• AC/Battery Priority Selector.

• Automatic Generator Start.

• Safety and Convenient.

• The low-frequency inverter can power all kinds of appliances.

• LCD Display, Remote Control, BTS including.

• Low Idle Consumption.

• 7 Battery-type settings for the charger.

• Multi-Stage Smart charger 120+/-5A, the charger can be disabled.

• 10msec typical transfer time.

Specification

Inverter Output

• Continuous Output Power: 4000W
• Surge Rating: 12000W (20 Seconds)
• Output:120VAC, 60hz
• Output Wave: Pure Sine Wave (bypass mode)
• Typical Transfer Time: 10ms (MAX)
• Nominal Efficiency: >88%

DC Input:

• Nominal Input Voltage: 12.0Vdc
• Minimum Start Voltage: 10.0Vdc
• Low Battery Alarm: 10.5Vdc-11.0Vdc
• Low battery Trip: 10.0Vdc-10.5Vdc (select by SW1)
• High Voltage Alarm: 16.0Vdc
• Low battery Voltage Restart: 13Vdc
• Idle Consumption: 45W 
• Power Saver Mode Idle Consumption: 18W

AC Charger 

• Charger Rate: 120+/-5A
• AC input Range (Grid or Generator): 90V-135VAC/100V-135VAC (selected by SW2)
• Over Charge Protection Shutdown:15.7V
• Selectable Charge Setting based on battery type Adjustable charge current: off 0%-100%
• 3-step intelligent battery charger

Packaging

• 4000W 12V Low-Frequency Pure Sine Inverter 

• English Manual

• Remote Control

• BTS Cable

• Unit Weight: 53LB 

• Unit Size: 17.4 x 9.5 x 7.8 inch

• Shipping Weight: 57LB 

• Shipping Size: 26 x 12.6 x 12.0 inch

User Manual

Download LFP Series Pure Sine Wave Inverter/Charger User's Manual

What Our Experts Think

• High Power Output: Delivers 4,000W continuous power, perfect for medium to large off-grid and backup energy needs.
• Pure Sine Wave Technology: Ensures clean, stable energy, protecting sensitive electronics and improving performance.
• 12V DC System: Ideal for RVs, boats, and off-grid setups requiring a reliable 12V power source.
• Integrated Charger: Combines inverter functionality with battery charging for seamless energy management.
• Advanced Safety Features: Includes overload, over-voltage, and short-circuit protections for reliable operation.
• User-Friendly Design: Compact, portable, and easy to install, with intuitive controls and clear monitoring indicators.

Q&A

Q: What is the 4000W DC 12V Pure Sine Wave Inverter with Charger (LFP4K12V120VSG)?
A: A powerful 4000W pure sine wave inverter with an integrated charger, designed to convert 12V DC to 120V AC, suitable for powering appliances and sensitive electronics.

Q: What are its key features?
A:

• 4000W continuous pure sine wave output
• Compatible with 12V battery systems
• Integrated charger for efficient battery recharging
• Safe for sensitive electronics (e.g., laptops, medical devices, TVs)
• Multiple protections: overload, overheat, overcharge, and short circuit

Q: What applications is it ideal for?
A: Suitable for RVs, boats, off-grid systems, and backup power for high-demand appliances and electronics.

Q: Can it handle heavy loads?
A: Yes, its 4000W capacity can power larger devices like refrigerators, pumps, and power tools.

Q: Is it easy to install and use?
A: Yes, it features a compact and user-friendly design, making installation and operation simple

Maintenance Tips

• Cooling System: Clean fans and vents regularly to prevent overheating.
• Battery Maintenance: Check battery voltage, connections, and charge cycles consistently.
• Wiring Inspection: Tighten all connections and inspect for wear, corrosion, or damage.
• Environment: Install in a dry, well-ventilated area, away from dust and moisture.
• Performance Monitoring: Monitor input/output levels to avoid overloading or system faults.
• Firmware Updates: Update firmware periodically for optimal performance and compatibility.
• Safe Maintenance: Disconnect power sources, including batteries, before servicing.