This is scary, but you can handle it by staying calm. Favorite Answer. Thanks!!! FALSE You won’t fully recharge your battery by going for a drive, idling the engine, or going for a short stop-start trip. A 2 year old good battery,should be able to re-cover but may have permanent damage. 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. 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. I returned to a completely drained battery. 8 Answers. Relevance. Nov 15, 2007 4,689 0 76. As a result, Before you disconnect a car battery; there are things you need to know. 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. I left my car lights on at the mall, went inside for 2 hours, and then came back and found it on!!! Will leaving the trunk light on for 12hrs kill the battery? 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. 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. 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. Overcharging of a car battery can also be caused by a defective battery charger. If you didn't leave your lights on accidentally then this could be a truly puzzling experience. ; Red Light on Steady –This indicates that the charger is properly charging the battery. When you’re in a safe spot, hit the brakes hard to stop the car. Leaving the lights on overnight will severely discharge a car or truck battery. Check the water levels in a car battery to determine whether or not the battery is ready to be replaced. How to Store a Car Battery . My … All my motoring life - 40 years - I have been led to beleive that leaving the ignition turned on with the engine not running "burns the coil out". I put the batteries in the unit in pairs, like the instructions say. However, when I traveled with it, I stored the batteries in the unit itself, unplugged of course. 10 Answers. * 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. Coast to the side of the road if your car stalls. Extreme weather conditions can also reduce the life of a battery, such as very hot or cold weather. 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. If your battery does die while you’re still driving, then the engine will probably stall. 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. The reality however, is that there are quite a few different things that can cause your car battery to drain. A car battery should last about six years, but like most car parts, that all depends on how you treat it. A common reason for a dead car battery is that it's been drained by the lights being left on, without the engine running. 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. Relevance. When you first turn on your car with the engine off, the battery light will illuminate and this is normal. It is easy to get damaged under high temperature. Does leaving your car lights on, not the car, do something to your battery when you left it on for 2 hours? A recent study showed that more than 1 in 10 car batteries need replacing. Does Draining a Car Battery Damage It? Car batteries usually last for about three to four years—but leaving your car sitting for far too long hastens the decay. However, I now think I may have been badly informed. 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. After leaving the car's lights on and flattening the battery, going for a drive will recharge it Show more. I smartly left a light on in my car, and went off on vacation. In fact, ‘surface’ charging or continuous undercharging will lower the capacity of the battery over time and shorten its life. Answer Save. Answer Save. Since car batteries don’t have enough power to satisfy all these components, the battery’s power will be drained quickly. Remember you should never charge leaking or damaged car batteries. Step 1. 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. Feb 2, 2008 8,110 4 61 www.wallpapereuphoria.com. Please, does it do something to the battery and what??? Lv 5. How does car idling affect your ride? 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. Absolutely no damage to the alternator. 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. 2) Old Battery. First, check the car battery charger you propose to use is suitable for your particular battery. 1 decade ago. Jun 10, 2010 #2 If when you open the trunk lights turn on and stay on, possibly. Clean the lead terminals. Lv 6. 1 decade ago. Those bars are for the big traction battery, not the little 12V battery that gets run down by leaving lights on. Favourite answer. 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. 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. 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). But if the battery is old or too worn out, then it won’t be able to get recharged properly and hold power like it used to. I have a personal experience with a similar situation. 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. Yes, particular for older cars. burn. First things first, car idling isn’t necessarily harmful to your vehicle, but it does have effects. Alternators are responsible for recharging the car battery with power. Our Charlotte auto service center is here to clear up the myths and rumors about car idling! Calmly shift your car into neutral and coast to a safe location on the side of the road. Battery leakage causes irreversible damage to electronic circuit boards. 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. Don’t use it under high temperature. Here’s what you can do when your car’s battery light turns on: Part 1 of 3: React to the battery light. Some reasons aren’t directly due to irresponsibility of the vehicle owner, for instance, there may be a short in the battery. Yes, you can. Take the Battery out clean the terminals. Jun 10, 2010 #3 It will probably turn them off by itself after an amount of time. So if you're dealing with a battery that goes dead over and over again, it's worth checking it out at night when it's dark out when a faint or dimmed dome light will be easier to see. If your alternator has a bad diode , your battery can drain. In fact, you could have been told the opposite, and that leaving your car idling has no effect. Can you leave a car battery charger on too long? not the same as a new one. Last edited: Jun 10, 2010. Some are expected while others are downright shocking, but you don't need to worry because at Tony White Group, we have you covered! Step 2. put the Battery on a Slow charge not to damage the cells. 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. If the settings are incorrect, your car’s battery charger will get overcharged, regardless of whether it is monitored or not. I called a mechanic over to start the car, thinking that the alternator will take over - but after half an hour of keeping the car running (idling), the battery is still not charged. 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. If you are talking about leaving a flat battery connected to a good battery for longish periods, the answer is "it depends". It’s most likely to damage the ignition coil. Does leaving the car ignition turned on damage the coil? but the countdown to unblocking only happens when the ignition is on. And it can happen in several ways. if it won't cause permanent damage to the car. Deep-cycle 12 volt battery's don't develop "memory" (short span cycles) as regular car battery's do. If you have an AGM or EFB battery you will need a smart charger . 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. 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. PhoKingGuy Diamond Member. If it goes totally flat ( wont even light up the interior light when you open the door), and is left, it dies, and wont accept a charge. The (neighborhood) mechanic claims that my alternator is now damaged. was rudely awoken by the police who were looking for the previous owner who has not lived here in at least 5 years. Princess Leia. The power inverter needs a working environment under less than 40 C°. 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