
SunGoldPower | 4000W DC 12V Pure Sine Wave Inverter With Charger
All-in-One Low-Frequency Power Inverter for Reliable Off-Grid Power

The LFP Series 4000W DC 12V Pure Sine Wave Inverter With Charger combines an inverter, battery charger, and automatic transfer switch into a single integrated solution. Engineered with low-frequency design and minimal idle power consumption, it includes a Battery Temperature Sensor (BTS) and remote control for advanced monitoring and control.
Power Specifications:
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Input Voltage: 120VAC
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Output Voltage: 120VAC
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Frequency Selectable: 50Hz or 60Hz via SW4
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AC/Battery Priority Mode: Defaults to AC input but can be changed to battery priority using the SW5 switch
Intelligent Charging:
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Adjustable Charging Current: From 0% to 100% using a linear switch
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Smart Multi-Stage Charger: 120A ±5A, can be disabled if needed
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Supports 7 Battery Types, including LiFePO4, AGM, Gel, and lead-acid batteries
Built-In Convenience:
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Auto Generator Start (AGS): Starts your generator when battery voltage is low and stops it once the battery is fully charged
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Fast Transfer Time: Typical 10ms for seamless backup switching
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Low Idle Consumption: Maximizes energy efficiency
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Wide Appliance Compatibility: Ideal for use with household and office electronics, tools, and more
Package Includes:
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4000W 12V Low-Frequency Pure Sine Inverter With Charger
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English Manual
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Remote Control
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BTS Cable
Unit Size: 17.4 x 9.5 x 7.8 inches
Unit Weight: 53 lbs
Shipping Size: 26 x 12.6 x 12.0 inches
Shipping Weight: 57 lbs


Looking for a top-quality pure sine-wave inverter and high-capacity charger? Look no further than SunGoldPower's low-frequency inverter. It combines an inverter, battery charger, and transfer switch into one comprehensive system. With a surge capacity of 300% for 20 seconds, this 12V DC to 120V AC inverter reliably supports tools and equipment for extended periods. It's a common choice for RVs, trailers, motorhomes, and truck campers, offering a reliable backup or off-grid power solution. Operating with a 120VAC input, it provides 120VAC output power for appliances and supports both 50Hz and 60Hz via the SW4 switch.
Specifications
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
Manuals and Downloads
Download LFP Series Pure Sine Wave Inverter/Charger User's Manual
FAQ
What is the idle wattage?
The idle power is 18W in saver-on mode and 45W in saver-off mode.
What type of wiring is used from the inverter to the remote?
The package includes a compatible remote wire for this product, allowing for direct use.
Warranty
2 Year Warranty
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Most orders ship within 1–3 business days. You’ll get a tracking number as soon as it ships via email!
Do We Accept Returns?
Yes absolutely, we have a no-hassle, 30-day return policy on all items! To refer to the full policy, click HERE
Are Products Brand New?
Yes! All products on Solar Guys Pro are 100% brand-new and in perfect condition.
We do not sell any used or refurbished items.

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