A few volts here, a few amps there, and before you know it there might be nothing left!
May 20, 2010 1:07 PM Subscribe
Does leaving my phone's car charger plugged in to the car at all times significantly drain my car's battery?
posted by Vorteks to technology (22 answers total) 1 user marked this as a favorite
I can't believe I'm spending my weekly question on this, but I've just got to know!
I have a car dock for my Nexus One. Up until now, I've been plugging it (the car dock) in to the outlet in my car as often as I use it, and unplugging it when I'm done. However, I'd prefer to just leave it plugged in all the time and just pop my phone in and out the the dock as needed. This is a very very minor annoyance, but still.
My car (a 2008 Ford Focus SES) is the type that has always-on power outlets. Even when I take the keys out of the car, open the door, and get out, anything plugged into the outlet continues to receive power until unplugged. Of course, when I leave my car, I take my phone with me so my phone would not drawing any power from the car. However, there's an orange light on the car adapter that lights up when it's plugged in, and that light is always on when it's plugged into the car, even when there's no phone attached to the other end. So I have to believe the car adapter is drawing SOME power at all times, even if it's a really small amount.
My question is: what is the danger of leaving the car adapter with its small power draw plugged in at all times? How long would it take the little orange light and whatever power leakage might occur to drain my car's battery? If I didn't drive my car for a week, would it be a problem? Does this shorten the life of my car battery at all?
I imagine you guys are going to tell me "dude, it's such a small power drain, it'd take forever before it'd be a problem". But I'd just like to be sure.