If I leave the device plugged in while the car is parked, will it drain the battery?
1683073
I had mine plugged in for a week and I never had any issues, but my truck has two batteries as well.
1186409
As in "If your car battery gets low will this shut down?" If that's what you mean then no, it doesn't. If the device doesn't receive the charge it needs to run, however, it will shut down. Your car battery won't drain with this turned on as long as your engine's running, thus, keeping your car's battery charged.
828759
It has a cooling fan that runs constantly so I unplug it. The batteries seem to hold a charge for a long time so I don't bother leaving it plugged in. Most of the time it rides in the trunk of the car anyway. Take care
1788950
most cars have the 9v outlet tied into the ignition, so it's not powered when the car is not running. Therefore, it won't drain your battery at all.
2116749
Yep, it'll work. Also contrary to other comments, it doesn't drain your car battery if you leave it plugged in.
1046865
No the charger won't drain the battery -- Nor will it maintain it... Batteries will naturally slowly lose their charge while sitting unused -- Plus sometimes dependent on where the batteries are being used (boat, Car etc.) there might be a slight discharge to circuit leakage . clocks, lights, and the like. Just plug your charger back in a day or two before you use the vehicle .
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.
150767
I assume your qeustion is if the product can be left connected while the car is off. I'd say yes, it will turn off I think. Although I haven't tried it. But in case the 12V port inthe car stays on it may drain the car battery since it has a fan that spins when connnected to power.
324706
No leave the battery in the device. The circuitry detects if the device is receiving power and then charges the battery and runs the device at the same time. When the battery completes charging the unit continues to run on AC till you unplug from the wall socket. It is a nice feature that you can run it and charge the battery at the same time.
1536598
Yes. I leave it plugged in since I use it at home. If the battery runs out, it will take some time before it charges enough to use again. I expected it to work as soon as I plugged it in but it didn't.
504158
I would guess that it depends on the vehicle. Some leave the power to those adapters active all the time. If your device stops charging once you have shut off your vehicle then it should be fine to leave it plugged in.
880180
Garry - i'm not 100% positive (like 75%), but pretty sure that the OBDII comm shuts down shortly after most cars are turned off & I believe that this device (powered by OBDii) will also shut-off and thus not drain the battery.
2231309
In theory, you could leave it on and have it come on with your car's power, but it would drain the unit's battery after you turn off the car if you leave the switch turned on, and that's probably not a good idea long term. I turn mine on and off when I use it.
1788949
If you have a VERY old car, it may still drain the battery. But, then, if your car is that old (like mine was), anything plugged in to the socket regardless of power draw may drain the battery.
1023914
It will stay on parking mode until the vehicle starts moving again or until the power supply is shut off (if it gets unplugged from the outlet).
206821
No it will not drain its made to be left hooked up to your batterys, just plug in when you want to charge them
166030
No you don"t Pheng, you can drive with no adverse effects on either your car battery or the electrical system on your vehicle. I leave mine plugged in all the time, unless I'm using a different device, ie; radar detector, GPS, etc.