Why does my car battery die after sitting for a long time?

If the battery is dieing from just SITTING, you likely have a short somewhere. If the battery dies after some driving and can sit relatively ok, your alternator/charging system is malfunctioning.

Is it normal to have a 13.1 volt battery?

What if my charged up and disconnected (NEW) battery is at 13.1 volts in the evening, then is down to 12.4 the next day (~ 12 hours disconnected from everything but thin air). Is that normal? Was this answer helpful? Elesha will be eternally grateful.

What should I do if my car battery keeps Diying?

Do this, get a battery charger for your car, charge the battery, and when it’s done measure/record the voltage when the battery is disconnected from the car and connected to the car. Then turn the car on (that is engine running) and measure/record the voltage again.

Why is my van battery constantly Diying?

Battery died with the van off and the radio on for more than 5 minutes. Literally jumped it all the time. I replaced the battery, battery didn’t work. Found out it wasn’t charged when I bought it (as a lot of places don’t pre-charge them now) so I charged it and it worked fine.

What to do if your car wont start after a battery replacement?

Hey, anything can happen. There’s a (miniscule) chance your replacement battery is toast. You can take it to an auto parts store and have them test it. Keep in mind that this problem is likely only if your car isn’t turning over at all. We hope this guide has helped you!

What happens to the battery when the car starts?

After a battery starts a car, the alternator takes over and powers the electrical systems of the car and also recharges the battery, which we’ll talk about next. As long as the car is being run fairly often the battery can be continuously recharged and ready for use.

What does it mean when a VW battery wont start?

First, you want to find out if the immobilizer is the problem. To do this, turn on the battery in your Volkswagen and see if the immobilizer warning light is flashing on your dash, most likely in your speedometer. It should look like an outline of a car with a key inside it. If it’s flashing, it means the immobilizer’s disconnected from the system.

Why does the battery warning light come on after replacing the alternator?

A relatively common “side-effect” of replacing a battery and/or alternator in a car is to have the voltage (battery) warning light come on. This is especially true in late-model vehicles with their more sophisticated internal diagnostic systems.

What happens when battery dies in Chrysler Town and Country?

The passenger doors would not lock with remote input or manual lock door can open when driving. Rear windows would open on their own merit usually causing animal to get in. The car fuel pump would not stop running until the battery died or the terminal was removed. The screen said display is hot.

What to do when your car battery dies?

If the battery dies after some driving and can sit relatively ok, your alternator/charging system is malfunctioning. Do this, get a battery charger for your car, charge the battery, and when it’s done measure/record the voltage when the battery is disconnected from the car and connected to the car.

Why did my battery die in the middle of the night?

A draw like that coming on and off in the middle of the night could drain a battery. He says that he thinks the TIPM is sending a signal over the PCI bus to turn on the fan. He has replaced the TIPM twice and the problem is still there. This is very weird but old style electrical tracing cannot be used to check it.

How did the battery die on my Dodge talk?

About 6 hours later, the battery was dead again – with the DVD still sitting unconnected on the back seat. I recharged the battery overnight and it worked again in the morning. About 5 PM the battery was dead again and needed a boost. And, of course, those damned remotes cease to function.

What to do if your battery dies overnight?

I shut down the vehicle, waited 10 minutes and disconnected the 12 solid wires so that now the current for 12 fuses could only pass through a 100 milli-amp fuse. On the next day, no fuse was blown and the battery was drained.

What causes a car battery to drain in the morning?

If your alternator has a bad diode, your battery can 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. 5. Extreme Temperature

What causes a car to draw power from the battery?

Learn more… If your vehicle is drawing power from the battery and all of the lights and other electrical components are off, you might have a parasitic battery drain (or draw). Luckily, you can usually find the cause of a parasitic draw yourself. Start by connecting a digital multimeter to the negative battery terminal of your vehicle.

What should I do if my car battery is dead?

You realize that your battery is dead. How did this happen? A car battery is the most crucial piece of equipment to starting and driving your vehicle. It sends power from the starter motor to the sparks plugs, igniting your car’s fuel, while also giving other systems power. This includes lights, radio, air conditioning, and more.

Is there a way to drain a battery in one day?

That seems like a tiny amount, but a single incandescent dome light pulls enough power to drain a battery in one day. Remember that the drain doesn’t have to take your battery to zero overnight, just low enough for it to not start.

Can a car run when the battery is off?

Any electronic device with memory settings, like a clock and radio station presets, draws power from the battery while the vehicle ignition is off. This drain is so small, you can leave a modern truck sitting for a week or more and it will still start up and run fine.