It still runs even when the car is off so can drain your battery

Then I tried to recharge some portable battery packs, forget it

I had concerns initially about how much it would drain the truck battery when plugged in without the vehicle running, but last night I accidentally left it plugged in all night with no problems at all

love it, except I gotta unplug it from the car when I turn it off or else it drains the battery.

Bought this for a road trip, it was able to charge our air mattress, portable batteries, and our iPad

And I plan to keep the motor running while using it, just to make totally sure what I'm running on AC voltage won't drain the car battery

Use it for the kids portable movies works great just make sure to have unplug when not using or will drain your battery

Or you'll drain your vehicle battery.

So you are basically instantly draining your battery and...

I accidentally left this item plugged in for a few days and did not drive my car; it drained the battery, and I had to get a jump.

Just unplug when not in use because it will kill your battery.

Vehicle must be on, for not to drain battery.

Operates very quietly and I’ve never had an issue with it draining my car battery

Didn’t even have my truck running and battery was still good the next day!

It will kill your car battery if your charging port stays powered after you turn your car off

Killed my truck battery

I used it 1-2 times daily to pump on the way to and from work and it killed my newer car battery twice

Do not leave it plugged into your car all night, it will kill the battery.

When the Yoga 920 battery is dead the inverter draws 7.5 AMPS from the 12V power source

and it does not drain your vehicle battery

And it always kills my battery !

But I accidentally left it plugged in for a weekend without driving my car, and it killed my battery

Comes in handy especially if you have a dead battery on your laptop which you need to use in an emergency situation.

Drains your battery if you leave it plugged in over the course of a night

It is far, far cheaper than the Goal Zero battery we bought first, and as far as I'm concerned this is going to be the only power device we'll need on the trip.

it sapped the battery from my car

This time, I had to get a new battery was late for work again and lost money again- $171.00 for a new battery.

This power inverter completely killed the battery in my car just in a few hours while I was driving for my vacation

Be warned, this thing does not detect when the car ignition is turned off, so it just stays on the whole time draining your car battery.

Don’t forget to unplug it when you park your car so it doesn’t drain your battery

I actually used this with a portable battery charger that has a cigarette lighter port built into it so that we could inflate and charge inside the tent without being connected to the car at all

and I got tired of chewing through the big bad D batteries, a 6 pack at a time.

If your car is in the off position for a few hours it could drain your car battery from the power it pulls

Be aware that if you run a car battery that low you may not have enough battery to start your car.

The inverter WILL drain your battery, per my friend.

It lets me keep the battery in the car and not risk forgetting it somewhere, which would leave me stranded as I cannot walk more than a few steps

It is not draining much battery in case someone turns on the unit and does not use it.

The car was running when the adapter was plugged in preventing it from draining the battery

We would like a

Arrived on time, works as it should.

but I assume it will work as I expect it too.

I like this one much better as it has the usb and regular power parts

It works as it should so far

Works as it should, writing this after owning it for a year

I connected to deep cycle battery and this was used to charge cell phones as well as to keep airmattress (low amp never deflate pump) connected to keep mattress from loosing air

I dig it because it works as it's supposed to and it is easy to place in my bookbag and glove compartment when transferring between vehicles.

I also wish the outside of the device was a little smoother and maybe had rounded edges; as well as that it had a longer cord

I liked that is works as it says.

Works exactly as I need it to