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Well, it seems not to work then. Why not get a portable DC 12V vacuum cleaner for your car? That would be easier for you. You can just plug it in car cigarette lighter.

Yes, you're right. Car batteries can be drained if you leave electronics on when the car is parked or even when the car is unused for months. I often forget unplugging out my bestek 300w power inverter and just think that it doesn't matter if my phones or other connected things are plug out...

Just check the status of my DC 12V car battery, it shows 50%. But actually, the 50% is not accurate. For example, when the real capacity of car battery is 50%, the result that be checked may be 45%~55% or 54%~56%. It is more difficult to measure the realc apacity of car battery precisely like...

If you want to connect the invrter and car battery, of course you need jump cables which as I know is two battery clips coming with the package. You should be careful to tell the positive terminals and negative terminals. There may be dangers if connected improperly. If you're not experienced...

I once heard that a vehicle can be used as a backup battery by connecting a power inverter when there is power failure. I have two concerns, one is that whether the car battery will be drained quickly. I think that will bring damages to my car battery. Second, the car power inverter should be...