Home » Car Batteries » Is Leaving A Cell Phone Charger Plugged Into Your Cigarrette Lighter Port Bad For The Car Battery Is Leaving A Cell Phone Charger Plugged Into Your Cigarrette Lighter Port Bad For The Car Battery The phone is not currently charging, but I left the charger in the cigarrette lighter port. Will that drain the battery? Tags:Battery, Cell, Charger, Cigarrette, Into, Leaving, Lighter, Phone, Plugged, Port Related Questions Car Charger Kill Car Battery NEED TO KNOW If I plug a car charger for my phone into a car’s cigarette lighter/outlet for an extended period of time (a few hours) while the cr is not running, Would A Battery Tender Damage Alternator, Volt Regulator If Plugged In And Car Started I have a 69 Chevelle that is hooked up to a 4 Bank Deltran Battery Tender. I have started it in the past while it was still plugged in. Answers for The Question Dan i don’t think it will drain the battery but i would unplug it anyway Navi Ra No it won’t. When the phone cells are ‘full’ it cuts off further electricity. Your car battery will act the same as the mains, i.e. it will be cut off when the phone it fully charged. usmc No, I leave mine in all the time. Big C There is a minimal drain. But it would drain your battery there if you left it on for a couple of months maybe. But otherwise, do not worry about it. Jessica Nope. If you have a newer car, the port turns off when the car turns off. On an older car, once the phone is charged there will be no more current flowing to it, thus no wear on the battery. charles h nope April P Absolutely! We have a Grand Prix that does that. WAY TO TEST: Plug the charger into your phone, turn off the car. If the phone continues charging then the outlet is run from battery power! Regardless of whether something is charging or not, it will still route power to that charger, and overtime, can drain your battery! It may not be too noticable, just things like sluggish windows, or seats but over extended periods of time it could affect your battery. It also depends on the type of car you have. The older ones tend to do this more than the new ones, I think! Incoming search terms: Is It Bad To Leave Phone Charger In Cigarette Lighter?,Is It Bad Yo Leave Your Car Battery On,Leave Car Charger In Car,Leave Cell Phone Charger In Car Dc Outlet,Leave Phone Charger Plugged Into Car,Leaving A Cell Phone Plugged Into Car Indefinitely,Leaving An Automotive Phone Charger Plugged In,Left Phone Charging In Car While The Car Was Off Now It Wont Turn On,Ok To Leave Phone Charging In Car,Can I Leave My Phone Charging In Car?