which models are Pure sine wave?

Don't think the 1000 watt version is because my cursor pointer went crazy when I plugged it in

How loud is the cooling fan??

The cooling fan is quite. The problem with this converter is if you ever pull on it hard it will smoke it. Mine did and 350$ went up in smoke. It was a 2000 watt and I am not sure what you are going g to load to it but...... . My word on it is you get what you pay for. I did pay 350 for the 2000 watt inverter I had ... I shoulda paid 750$ . The difference in circuitry on the 2 inverters was substantial.

Will this run a built in air mattress pump?

Yes no problem I use mine to camp and charge my drone battery’s

Can anyone confirm that the usb port is still active even with the inverter switched off. my usb stays active. any suggestions to fix if this should

Yes the USB port is active Pretty sure it's made that way

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Power Converter Kinverch

Product ID: 445605669

Details

Brand
kinverch
Recommended uses for product
Home Office
Power source
Battery
Wattage
500 watts
Model name
KMA500-11

⚡500W power output

📏Compact 17x10x5.5 cm size

⚖️Lightweight 943g design

Description

⚡ Power up your drive — never run out of juice on the road!

UNIVERSAL COMPATIBILITY - Supports a wide range of electronics, making it your ultimate travel power companion.
TRUSTED KINVERCH QUALITY - Engineered by Kinverch for durability and consistent performance you can count on.
COMPACT PORTABLE DESIGN - Fits perfectly in your car without taking up space—power on the go, hassle-free.
RELIABLE 500 W POWER BOOST - Seamlessly convert your car’s DC power to AC for all your essential devices.
LIGHTWEIGHT FOR EASY HANDLING - At under 1kg, it’s easy to carry and install wherever you need it.

The Kinverch KMA500-11 Power Converter delivers a robust 500-watt output in a compact, lightweight form factor, enabling seamless DC to AC power conversion for your car. Designed for portability and reliability, it supports multiple devices, making it an essential accessory for professionals and travelers who demand power anytime, anywhere.

Specifications

Manufacturer	kinverch
Brand	kinverch
Model	KMA500-11
Product Dimensions	17.02 x 10.41 x 5.59 cm; 943.47 g
Item model number	KMA500-11
Manufacturer part number	KMA500-11
Wattage	500 watts
Item Weight	943 g

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