What is the no load power draw in amps?

I just went out and did a 10 minute test, it drew approx. .25 amp no load. Hopefully this helps.

My alarm sounds continuously and red light stays on. I've tried several batteries and the cigarette outlet. All read over 12v on my multimeter. Why?

Must problems people have with inverters is that their not using proper wire gage rod the power supply secondly when using a cigarette lighter for the power supply it simply is under powered the in line fuse is only 10a or 15a so you only supplying 120dc watts or 180 dc watts and expecting to produce 300ac watts = 2.5 ac amps = 300 dc watts. So get a minimum of #10 wire from the battery to the inverter.

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300Watt Pure Sine Wave Power Inverter DC 12volt to AC 120volt Car Converter Adapter with Dual USB Ports for Smartphones Laptops Tablets

Product ID: 146008497

Details

Brand
Giandel
Model Name
PS-300B
Power Source
DC 12V
Recommended Uses For Product
Vehicle
Wattage
300 watts

⚡300W continuous, 600W peak power

🔌2 AC outlets + Type-C PD30W & QC3.0 USB fast charging

🛡️Advanced isolated input/output safety tech

Description

🔋 Power your adventure with pure, fast, and safe energy anywhere!

PURE SINE WAVE POWER - Delivers clean, stable 120V AC power for sensitive electronics without interference.
SILENT SMART COOLING - Whisper-quiet fan ensures optimal performance without distracting noise during long drives or camping.
SLEEK DURABLE DESIGN - Aluminum alloy housing resists drops and bumps, perfect for rugged travel and daily use.
COMPREHENSIVE DEVICE PROTECTION - Built-in safeguards against overvoltage, undervoltage, overload, short circuit, and overheating keep your gear safe on the go.
DUAL AC OUTLETS FAST USB CHARGING - Charge multiple devices simultaneously with 2 AC outlets plus PD30W Type-C and QC3.0 USB ports for ultra-fast power delivery.

The Giandel 300W Pure Sine Wave Power Inverter converts your car’s 12V DC into clean 120V AC power, supporting up to 600W peak output. Equipped with 2 AC outlets plus Type-C PD30W and QC3.0 USB ports, it charges multiple devices rapidly while advanced isolated input/output technology protects against electrical hazards. Its durable aluminum build and silent cooling fan make it an essential travel companion for laptops, smartphones, tablets, and more, backed by an 18-month warranty.

Specifications

ASIN	B07SLPWBK3
Antenna Location	Vehicle
Best Sellers Rank	#715,428 in Automotive ( See Top 100 in Automotive ) #703 in Power Inverters
Brand	Giandel
Built-In Media	fuses
Color	300W Red
Customer Reviews	4.4 4.4 out of 5 stars (873)
Electrical Output Waveform	Pure Sine Wave
Energy Specifications Met	UL
Frequency	20 hertz
Input Voltage	12 volts
Item Dimensions L x W x H	6.22"L x 4.13"W x 1.77"H
Item Weight	1.7 pounds
Manufacturer	GIANDEL
Mfr Part Number	PS-300B
Model Name	PS-300B
Model Number	PS-300B
Number of Items	1
Number of Outlets	4
Number of Packs	1
Output Power	300 watts
Output Voltage	120 volts
Peak Output Power Watts	600
Power Source	DC 12V
Standby Power Shutoff	91%
UPC	713923334755
Unit Count	1 Count
Voltage	12 volts
Wattage	300 watts

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