{"id":2341,"date":"2024-01-03T00:00:58","date_gmt":"2024-01-03T00:00:58","guid":{"rendered":"https:\/\/test-telle-tire.pantheonsite.io\/?p=2341"},"modified":"2025-12-17T17:59:54","modified_gmt":"2025-12-17T17:59:54","slug":"car-battery-wont-hold-a-charge","status":"publish","type":"post","link":"https:\/\/www.telletire.com\/blog\/car-battery-wont-hold-a-charge\/","title":{"rendered":"8 Reasons Your Car Battery Won\u2019t Hold A Charge"},"content":{"rendered":"

Many vehicle components require regular maintenance to ensure the best safety and performance. However, some pieces, such as your car battery, may last for some time, meaning you don\u2019t think about them much \u2013 until they become an issue. Without a functioning battery, your car can\u2019t start, and the electrical components of the vehicle \u2013 such as lights, audio, internal computers, and navigation \u2013 will malfunction or not work at all, so if you\u2019re able to, we suggest keeping a spare battery on-hand<\/a> in the event of an emergency. If your car battery won\u2019t hold a charge, there could be one of several reasons for the issue.<\/p>\n

Possible Causes of a Drained Vehicle Battery<\/h2>\n

Different reasons could prevent car batteries from holding a charge for long, but the most common ones are as follows:<\/p>\n

Corroded Battery Connections<\/h3>\n

Electrolytes from the battery top can cause corrosion<\/a> of the connections to the battery cables and prevent them from reaching a full charge, so the battery won\u2019t hold a charge for long while driving along. Corroded battery cables show blue-white or green-tinged substances on your car\u2019s battery terminals, cables, or posts. You can fix the problem by regular maintenance or taking it to a repair shop for cleaning and evaluation.<\/p>\n

Battery Not Recharging As You Drive<\/h3>\n

Your car\u2019s battery recharges regularly while you drive, but if there\u2019s any connection or mechanical issue, that recharging isn\u2019t taking place, resulting in a quick battery drain. The battery must be checked during routine maintenance to diagnose any issue before it becomes a bigger problem. However, if you\u2019ve just had work done or want to rule it out, inspect the terminals and tighten any noticeably loose connections. Leaving loose connections can cause excessive resistance build-up, affecting adequate battery recharge. Corrosion may also result in a lack of recharge, so if you notice any, remedy it immediately.<\/p>\n

The Battery is Old or Past Expiration Date<\/h3>\n

Your car battery won\u2019t hold a charge for long if it reaches the end of its service life. A battery will typically serve you for three to five years. An old battery is easily identified visually when corrosion returns just a few months after cleaning. When this happens, you must take your vehicle in for a full-service car battery replacement.<\/p>\n

Faulty Alternator<\/h3>\n

The alternator fails<\/a> because of use or age. Premature failure may result from fluid leaking on the component. Indicators of a faulty alternator are the smell of burning rubber, whining or growling sounds, and battery warning lights. The best way to fix the alternator is to take your car to a repair shop for diagnosis and assessment<\/a> because technicians will identify the specific part that has an issue.<\/p>\n

Parasitic Draw on Charge<\/h3>\n

A parasitic draw happens if your battery keeps draining when the car is not running. Some faulty issues with the car could be drawing the charge even when the engine is off, or it could be as simple as an interior light that was left on for an extended period.<\/p>\n

Overcharging, Undercharging, or Allowing Deep Discharge<\/h3>\n

Overcharging can cause overheating and breakdown of your car battery. It arises from charging too frequently or for long periods.<\/p>\n

When you do not sufficiently charge the battery, the lead plates begin to sulfate, reducing the surface area for the necessary chemical reaction. Lastly, a deep charge allows the battery to discharge completely before recharging. This can damage the battery and reduce power holding capacity. This issue is common among electrical car owners.<\/p>\n

Extreme Temperatures<\/h3>\n

Extreme temperatures result from hot or freezing weather. It evaporates the battery water and reduces its efficiency. For extreme coldness, the battery may not produce enough charge. Living in an area with extreme weather conditions requires extra attention to be paid to the battery\u2019s cold cranking amps (CCA) rating. In the battery industry, the CCA rating defines the battery\u2019s ability to start the engine in cold temperatures. The higher the CCA rating, the greater the battery\u2019s starting power. Get an inspection<\/a> for your car battery to determine if you will need to add water to get it running.<\/p>\n

Blown or Defective Fuse<\/h3>\n

An overloaded battery will blow a fuse because too much current flows through the circuit. Common indicators of a defective or blown fuse include minor electrical problems<\/a> like faulty interior backup lights. Use your car manual to locate and fix the blown fuse, or take it to your mechanic for assistance.<\/p>\n

How to Diagnose a Battery Issue<\/h2>\n

If your vehicle is having trouble getting started or experiencing technical issues, there are a few ways to determine whether it\u2019s the battery causing the issue or something else.<\/p>\n