Why does my voltmeter only show 70-80V when testing the inverter output, while the inverter screen shows 120V?

This is not a defect or malfunction. The issue is likely because your voltmeter isn’t using the correct measurement mode. This is a modified sine wave inverter, so make sure your voltmeter supports RMS or True RMS (TRMS) mode for accurate readings.

My appliance is under 4000W, but it still doesn't work properly. Why?

Please ensure 1.Your battery capacity is large enough (200AH or more is recommended). 2.You have connected both sets of cables. 3.If you do both and it still doesn’t work, please tell us directly — we’ll help resolve the issue within 24 hours!

What size inverter should I buy?

Always choose an inverter with a higher power rating than your appliances. If your coffee machine is 2000W, a 3000W or 4000W inverter would be a good choice. Not sure? Feel free to tell us for professional advice.

Can I use the inverter while charging the battery at the same time?

No. The charger’s voltage is usually higher than the battery’s, which can trigger the inverter’s over-voltage protection if used simultaneously.

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LVYUAN 4000 Watt Power Inverter 24V to 110V 120V for Vehicle, Solar Inverter System, Heavy Duty, RV, Truck, Off Grid,Camping with 4 AC Outlets, LCD Display, Wireless Remote Control, Car Power Inverter

LVYUAN 4000 Watt Power Inverter 24V to 110V 120V for Vehicle, Solar Inverter System, Heavy Duty, RV, Truck, Off Grid,Camping with 4 AC Outlets, LCD Display, Wireless Remote Control, Car Power Inverter

Product ID: 696352327

⚡4000W continuous / 8000W peak power

📊Real-time LCD performance monitoring

🔌4 versatile AC outlets + hardwire terminal

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12684334₫

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Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Power your freedom—anywhere, anytime!

COOL SAFE OPERATION - Intelligent cooling fan and comprehensive safety protections ensure quiet, reliable, and worry-free power delivery wherever you go.
POWERHOUSE PERFORMANCE - Delivers a massive 4000W continuous and 8000W peak output to keep all your heavy-duty devices running smoothly.
PLUG PLAY VERSATILITY - Four AC outlets plus a hardwire terminal let you power multiple appliances simultaneously—perfect for RVs, trucks, and off-grid adventures.
STAY INFORMED INSTANTLY - Smart LCD display provides real-time voltage, battery level, load, and alert info so you never miss a beat on your power status.
REMOTE CONTROL CONVENIENCE - Wireless remote lets you manage your inverter from afar—ideal for hard-to-reach setups in RV cabinets or solar systems.

The LVYUAN 4000 Watt Power Inverter converts 24V DC to 110/120V AC with a continuous output of 4000W and peak of 8000W, featuring 4 AC outlets, a real-time LCD display, wireless remote control, and smart cooling with full safety protections. Designed for heavy-duty use in vehicles, RVs, solar systems, and off-grid setups, it ensures stable, efficient, and safe power delivery for all your mobile energy needs.

Specifications

ASIN	B0DCJZKNXF
Antenna Location	Camping, Home, Office, Outdoor, RV, Vehicle
Battery Capacity	200 Amp Hours
Best Sellers Rank	#117,391 in Automotive ( See Top 100 in Automotive ) #207 in Power Inverters #1,991 in Car Audio & Video Accessories
Brand	LVYUAN
Built-In Media	2 pairs of cables, Instruction Manual, Inverter, Remote controller (Without battery 12V 23A)
Color	Black
Display Type	LCD
Electrical Output Waveform	Modified Sine Wave
Energy Specifications Met	UL
Frequency	60 Hz
Input Voltage	12 Volts
Inverter Capacity Volt-Amp	4000
Item Dimensions L x W x H	16.3"L x 7.04"W x 5.51"H
Manufacturer	Guangzhou LVYUAN Technology Co., Ltd.
Model Name	LY-MSW4000W-24V
Model Number	LY-MSW4000W-24V
Number of Outlets	4
Output Power	4000 Watts
Output Voltage	110 Volts, 12 Volts, 120 Volts, 220 Volts
Peak Output Power Watts	8000
Power Source	Solar and Battery Powered
Recommended Uses For Product	Camping, Home, Office, Outdoor, RV, Vehicle
Standby Power Shutoff	95%
Voltage	24 Volts (DC)
Warranty Description	12 Months Warranty
Wattage	4000 watts

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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