put the Battery on a Slow charge not to damage the cells. If you charge it, or jumpstart it before this point is reached( eg.. the interior lights come on, perhaps the ignition lamps on the dashboard as well when you put the key in), the battery will recharge off the cars alternator. Take the Battery out clean the terminals. was rudely awoken by the police who were looking for the previous owner who has not lived here in at least 5 years. * Problems can happen almost without warning, however, there are a few key signs to look out for when checking if a car battery is dead. the car was just driven back from italy, but the 4-hour stints they were doing did not unblock the radio, so we want to leave in my parents' garage with the key in. And it can happen in several ways. The (neighborhood) mechanic claims that my alternator is now damaged. Lv 6. Calmly shift your car into neutral and coast to a safe location on the side of the road. 2) Old Battery. 10 Answers. ; Red Light on Steady –This indicates that the charger is properly charging the battery. Overcharging of a car battery can also be caused by a defective battery charger. Favourite answer. not the same as a new one. If you have a self-leveling battery charger, set it to 2 amps and it'll *slowly recharge the battery if it's not too old. Does leaving your car lights on, not the car, do something to your battery when you left it on for 2 hours? This is scary, but you can handle it by staying calm. Car batteries stay charged by harnessing the extra power of the car's engine, and most can go for at least five years without needing to be replaced or recharged. If the battery light comes on while the engine is running and the vehicle is being driven, this indicates a problem with the charging system. I smartly left a light on in my car, and went off on vacation. When you first turn on your car with the engine off, the battery light will illuminate and this is normal. Favorite Answer. Those bars are for the big traction battery, not the little 12V battery that gets run down by leaving lights on. A car battery should last about six years, but like most car parts, that all depends on how you treat it. A car alternator recharges the battery and powers certain electrical systems like lights, radio, air-conditioning, and automatic windows. but the countdown to unblocking only happens when the ignition is on. Jun 10, 2010 #2 If when you open the trunk lights turn on and stay on, possibly. Does Draining a Car Battery Damage It? Answer Save. i informed the officers of this through the window as i was basically naked and told them that person did not live here anymore and showed them my ID. Clean the lead terminals. If you want to use high power appliance, you should make sure that your car battery is powerful enough and you have a high power car power inverter. A common reason for a dead car battery is that it's been drained by the lights being left on, without the engine running. If your battery does die while you’re still driving, then the engine will probably stall. Jun 10, 2010 #3 It will probably turn them off by itself after an amount of time. Feb 2, 2008 8,110 4 61 www.wallpapereuphoria.com. Step 1. If you are talking about leaving a flat battery connected to a good battery for longish periods, the answer is "it depends". Yes, you can. Can you leave a car battery charger on too long? When the engine is running the coil converts the 12-volts from the battery to many thousands of volts (12,000 to 20,000) to generate the spark. Our Charlotte auto service center is here to clear up the myths and rumors about car idling! Battery - Provides The Power To Run The Starter, Lights, Accessories So, Most people do not realize that disconnecting a car battery for any reason; may cause unexpected things to happen. How does car idling affect your ride? However, when I traveled with it, I stored the batteries in the unit itself, unplugged of course. Will leaving the trunk light on for 12hrs kill the battery? Your car battery is responsible for powering your car's computer, ignition system, lights, radio and more, so it's important to monitor its condition to avoid getting caught out. Car batteries usually last for about three to four years—but leaving your car sitting for far too long hastens the decay. The power inverter needs a working environment under less than 40 C°. I left my car lights on at the mall, went inside for 2 hours, and then came back and found it on!!! Battery leakage causes irreversible damage to electronic circuit boards. Since car batteries don’t have enough power to satisfy all these components, the battery’s power will be drained quickly. Relevance. Don’t use it under high temperature. Last edited: Jun 10, 2010. However, I now think I may have been badly informed. Princess Leia. Leaving the headlights on can kill a weak battery in the amount of time it takes you run a short errand like shopping for groceries, but even a small interior dome light can drain a battery dead overnight. Here’s what you can do when your car’s battery light turns on: Part 1 of 3: React to the battery light. Thanks!!! The 12V battery is more expensive than any previous car battery you have had (there are several threads here about non-Toyota options, particularly Yellow Top). I put the batteries in the unit in pairs, like the instructions say. If your battery hasn't completely discharged, you may be able to charge it using a car battery charger that plugs into the mains. Some more common low voltage readings can come from leaving lights on after the car is shut off, leaving the glove box open with the lights on or having the doors opened for prolonged lengths of time. While four weeks to two months may be enough cushion to keep your battery working, it’s still best to err on the side of caution. But even the best car batteries will run out of power eventually — or lose their charge prematurely when you leave your lights on too long. Years ago, my family had a car that, when driven daily during the work week started and ran just fine, no matter how it was parked at night. PhoKingGuy Diamond Member. Some are expected while others are downright shocking, but you don't need to worry because at Tony White Group, we have you covered! If you have an AGM or EFB battery you will need a smart charger . The car battery itself may be the cause if it has corroded cable terminals, bad wiring, damaged cells or plates inside or if it is leaking electrolyte. It is easy to get damaged under high temperature. if it won't cause permanent damage to the car. In fact, you could have been told the opposite, and that leaving your car idling has no effect. If your alternator has a bad diode , your battery can drain. My UL V-2833 Class 2 Battery Charger does not work (or, at least the charging lights don’t turn on), and I never even used it once! Answer Save. burn. I returned to a completely drained battery. The reality however, is that there are quite a few different things that can cause your car battery to drain. The bad alternator diode can cause the circuit to charge even when the engine is shut off, and you end up in the morning with a car that won’t start. Step 2. Does leaving the car ignition turned on damage the coil? Leaving the lights on overnight will severely discharge a car or truck battery. Then a fresh set of batteries will restore power. However, a weak battery is likely to drain completely within a few hours, according to Cars Direct. Tristicus Diamond Member. There is a way to clean up the residue from leaking alkaline batteries on the inside of battery cases and repair the damage to battery contacts. First, check the car battery charger you propose to use is suitable for your particular battery. Some of the main ways in which a car battery can meet a premature end is through lack of proper maintenance and subsequently the corrosion of cables and posts that connect the battery to the engine. It's also hard on an alternator when you drain a battery, because they aren't designed to charge batteries from a … Please, does it do something to the battery and what??? FALSE You won’t fully recharge your battery by going for a drive, idling the engine, or going for a short stop-start trip. Check the water levels in a car battery to determine whether or not the battery is ready to be replaced. First things first, car idling isn’t necessarily harmful to your vehicle, but it does have effects. When a normal battery is below 80% charge then it can damage the re-charge. In a situation outlined in the OP, battery life is inversely proportional to your need for the car to start. 1 decade ago. When a car battery has been drained below a state of full discharge, all you can do is check the electrolyte and put it on a trickle charger. Alternators are responsible for recharging the car battery with power. If you didn't leave your lights on accidentally then this could be a truly puzzling experience. I have a personal experience with a similar situation. It’s most likely to damage the ignition coil. Deep-cycle 12 volt battery's don't develop "memory" (short span cycles) as regular car battery's do. After leaving the car's lights on and flattening the battery, going for a drive will recharge it Show more. 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