Once a car battery has been drained below a state of full discharge, the damage has been done. … If this is the first time that it has been discharged, you should be able to fully charge the battery and continue using it, but every time it is discharged below that threshold of 10.5 volts, the damage is done.
Can a brand new car battery go bad?
Yes. Modern batteries accumulate sulfide which falls off plates into the bottom of the battery, thereby shorting the lead plates. Moving the vehicle every several weeks sometimes prevents the above from occuring. These are new battery chargers types that revive dead batteries.
Can you ruin a new battery?
Yes, very easily. A failing alternator can overcharge, which will damage the battery. An undercharging alternator will leave the battery flat, which speeds up its failure.
How long should a new car battery last?
Some cars will get up to five or six years out of their battery, while others will need a new one after only two years. In general, your car will usually need a new battery after three to four years. Replacing your car battery is another part of routine maintenance.
How long can a brand new car battery sit unused?
You can leave a brand new battery for around 3 months with no lasting damage. Older batteries could go flat in a week if they are in a weak condition. Through this brief article, we’ll try to explain why and advise on maintaining your car battery in optimum condition.
How long can a car battery sit without being charged?
New battery storage
If your car battery was manufactured a month ago and has never been previously installed, it should be enough to put it on a slow charge for 22-24 hours. After charging, put it in a dry and warm place with low humidity, for example, in a closet.
How long can a car sit without being driven?
As a rough guide, we always advise not to allow any more than two weeks to pass without driving your car if you expect it to start again. However, if you carry out the recommendations in our guide, you’ll be able to store your car for months or even years with minimal issues.
Will a bad alternator kill a new battery?
A bad alternator can kill a battery in two different ways. If the alternator is producing no or insufficient charge, the battery will simply run flat, and this is poison to a lead acid battery. Every discharge below 50% makes a significant loss to the number of charge cycles that the battery can sustain.
What are the signs your alternator is going out?
7 Signs of a Failing Alternator
- Dim or Overly Bright Lights. …
- Dead Battery. …
- Slow or Malfunctioning Accessories. …
- Trouble Starting or Frequent Stalling. …
- Growling or Whining Noises. …
- Smell of Burning Rubber or Wires. …
- Battery Warning Light on Dash.