Will this necessarily drain your car battery?
1528835
Yes, from the law of conservation of energy (physics) it's clear that you can't get energy/power for nothing so if you're using this inverter it is drawing power from somewhere (your car battery). However, the car's battery is constantly re-charged when the engine is running so your battery shouldn't run out if you're driving while using the inverter. Also, how fast the battery drains depends on what you have plugged into the inverter. If you're just charging a phone, little power is used as compared to having a hair dryer plugged into it. So, long story short -- don't charge or run high-power devices for long periods of time with this (or any) inverter while your car is turned off because that will quickly drain your battery. If you're driving, you should be fine but your gas mileage will probably go down (conservation of energy again, your car has to get energy from somewhere to be able to recharge your battery -- it gets this energy from gasoline). Hope this helps, sorry for the in-depth info -- I'm an electrical engineer and haven't had a change to 'nerd out' yet today :-)
1528836
Yes, if you use it with your car turned off. As long as the engine's running your battery won't be drained.
1528837
I've used it the entire time of driving however just to be o the safe side I would not leave something plugged in it overnight. Expecially if you have an older battery.
1162189
It Doesnt. You will need to unplug it or else your battery will drain just like mine.
343904
No it says it will drain a car battery in about 4 hours. If you can run your vehicle and charge the battery in intervals it would work, if not it will drain your battery. Car and SUV battery's are still just 12 volt battery's. SUV might have more cranking amps, but still won't hold a charge longer.
418425
It depends on how your car is wired. If you have a iPhone charger for your cigarette lighter, try charging the iPhone while your car is turned off. If it does, then yes anything you plug into that outlet will drain the battery when the cars off.
1263613
When your take your keys out of the ignition... it turns off the ability to draw power from your car battery. You wouldn't have a problem with this.
242458
Only if you leave a device connected to it. .. At least I have no issues with it draining my truck battery
1198398
I can't say definitively but from empirical evidence I don't believe it does. The head unit goes dark when the car is turned off and I've never experienced a battery issue.
922835
Yes it does and works fine. But keep your car running because it may run down your battery otherwise.
1853721
Yes, if you uncheck parking mode at the setting, it will shut off as soon as you turn off your car. It won't drain car battery. Don't forget to get a CPL filter if you want to reduce image reflection!
2081706
Yes, it will but the drain would be very minimum. If your battery is strong, I would not worry about it.
673249
If your car's 12V outlet works with the engine off it will. If you're going to be doing this for too long I would recommend againt it or you will end up with a dead battery.
2013404
No. It keeps drawing off the car battery until you unplug it. I got the 120v adapter so I could plug into wall outlet or extension cord.
1100902
It should not drain your battery while your car is off unless you cigarette lighter socket is wired to your battery instead of a accessory fuse. Many cars before 1992 were like this. You could get it rewired, probably for under $20 depending on your location, or DIY, if this is the case. It shouldn't drain the battery very fast though unless you have an already bad battery.
1692776
No, all it does is give you an extra few minutes to leave your cabin lights on when it is freezing outside. Or it makes your starts in cold weather faster or easier rather than slow and struggling. It's really best for giving you extra charge when you leave your lights on in cold weather for a little too long, but it won't charge a drained battery. One of the great things as the previous person said is that it can charge accessories like GPS or Dash Cams without draining your battery while the car is off, I think for that alone it was worth it.
1018942
sure it will pal, keep it in dry place...it works automatically... when battery is full charge it stops sending charge...when battery need charge it will auto start it will never burn or dry your battery
1100906
I have a small compact car & I use this adapter all the time & I have not had any issues with it draining my battery.
1975853
Yes, but you still have to unplug it when you start your car. Also if its anything like the one of got it wont last more than a few hours anyway.