Tip #85: Test your battery every fall once it is a few years old
A car battery that is a few years old should be tested every fall, before the first cold mornings. A test takes minutes at a shop or parts store and tells you whether the battery will make it through winter.
Tip #85 in one line
A car battery that is a few years old should be tested every fall, before the first cold mornings. A test takes minutes at a shop or parts store and tells you whether the battery will make it through winter.
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Call nowWhy fall is the right time
Summer heat wears batteries down from the inside, and the first cold snap exposes the damage. Cold slows the chemistry inside the battery just as a cold engine needs more power to turn over. That is why so many no-start calls come on the first frosty mornings of the year. A battery tested in October gives you time to replace it on your schedule, not on the side of the road.
As a habit, start testing once the battery is about three years old, and test every fall after that. The date of manufacture or installation is usually on a sticker or stamped on the case.
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Call nowWhat a test tells you
A proper battery test measures more than voltage. A load or conductance test checks whether the battery can still deliver the cranking power it was rated for. Many repair shops and parts stores run the test; ask for the printed result, which shows the battery's condition and whether it is charging normally.
Signs you should not wait for the fall test: slow or labored cranking, a battery warning light, dim headlights at idle, clicking when you turn the key, corrosion on the terminals, or a case that looks swollen.
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Call nowIf it dies before you get to it
A jump start is one flat price, and the tech tests the battery on site so you know whether it held. We do not sell or install batteries, so if the battery is finished, the plan is to drive straight to a shop or a parts store, or book a local tow on the same call if the car will not stay running.
After a jump, drive for a while without stopping so the alternator can recover some charge. Short trips right after a jump often end in a second dead battery. Call (908) 444-0129 any hour; the jump start guide covers the rest.
Keep the terminals clean between tests. A layer of white or green corrosion on the posts can stop a healthy battery from delivering its power. A shop can clean the terminals and check that the clamps are tight in a few minutes. A loose clamp is a common cause of a car that starts one day and not the next.
If you leave the car parked for long stretches, a battery maintainer helps it last longer. And if you only drive short trips, add one longer drive a week to give the battery a chance to recharge fully.
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Call nowMore on batteries
Keep reading, or go back to every post on the blog.
- Dead car battery in a New Jersey winter: why it happens and what to do
- Tip #11: Jump-start in the right order, and finish on bare metal, not the battery
- Tip #12: Never jump a battery that is swollen, cracked, leaking or frozen
- Tip #18: Test an aging battery in the fall and replace it on your schedule, not the weather's
- Tip #19: If the car dies while driving, suspect the alternator before the battery
- Tip #20: A battery that dies every few days usually has something draining it
- Tip #87: If your battery keeps dying, have the alternator load-tested at a shop
- Tip #93: Modern cars and EVs drain their 12-volt battery while parked
- All posts
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