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What are the reasons for battery overheating?

2 Answers

DeHarper

09/02/25 8:08am

Battery overheating is caused by excessive current during operation. The functions of the battery are: 1. When starting the engine, the battery supplies power to the starting system, ignition system, and electronic fuel injection system; 2. When the engine is stopped or idling at low speed, it powers the vehicle's electrical equipment; 3. When the generator's output is insufficient, it can assist in supplying power to the electrical equipment; 4. It mitigates voltage surges in the electrical system, protecting the vehicle's electronic devices; 5. It can store excess electricity generated by the alternator. Battery maintenance methods: 1. Avoid parking the car in an open-air parking lot for extended periods; 2. In winter, avoid multiple uninterrupted starts of the car; 3. The car battery should be charged frequently; 4. Regularly clean the battery terminals and apply grease to protect the wiring harness.

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OscarLee

09/15/25 3:16am

I've been driving for most of my life and have encountered battery overheating issues several times, which can be really troublesome. There are multiple causes: overcharging is a major factor—if the alternator or voltage regulator fails, it keeps charging the battery nonstop, making it hot; short circuits are also common, where internal corrosion or external wiring causes excessive current flow, leading to instant heat; aging batteries with damaged plates inside generate heat; parking in direct sunlight during summer makes batteries more prone to heating up; and frequent engine starts or using high-power devices like audio systems or air conditioners can overload the battery, making it hot. I remember last summer during a long drive, I didn't pay attention, and the battery got dangerously hot, almost catching fire. It turned out to be a charging system issue, and replacing the regulator fixed it. To avoid danger, regularly check the battery's condition—like watching for abnormal charging indicator lights—and if the temperature seems off, pull over to let it cool down.

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Does Rust Remover Damage Car Paint?

Automotive rust remover can damage car paint. Small rust spots are typically caused by acid rain corrosion. It is recommended to use car wax—any car wax will suffice to address the issue. Below are some methods for maintaining car paint: 1. Nano Coating: After applying nano coating, the car paint becomes resistant to scratches and UV rays. Its excellent flexibility prevents paint cracking, accelerates water droplet runoff, and avoids water droplet lens effects, stains, and oxidation spots. 2. Waxing: Waxing is the most well-known method for car paint maintenance. Most car wash services offer waxing, which provides a certain level of protection for the paint in the short term. 3. Glazing: Glazing primarily uses high-molecular polymers and petroleum-based solvents as its main ingredients. These are pressed into the paint using a polishing machine to form a mesh structure, enhancing the paint's strength and hardness. This method protects the paint from minor scratches for a certain period, and the "glaze" is waterproof, smooth to the touch, and lasts longer than waxing.

Can a Used Car Be Returned After a Few Days of Purchase?

If the dealer intentionally conceals the vehicle's usage condition, leading the buyer to purchase the car without full knowledge, the buyer can request a return from the dealer with evidence. Here are some considerations regarding used car purchases: 1. Documentation: Verify whether the vehicle's documents are authentic and complete, whether the engine number and chassis number on the documents match those on the vehicle, whether the vehicle can be transferred, if there are any mortgages, court seizures, economic disputes, unresolved traffic violations, or if the inspection and insurance are expired. Also, check if there are specific requirements for transferring corporate-owned vehicles locally. 2. Vehicle Condition: Be cautious with vehicles in poor condition, no matter how cheap they are. After identifying the desired model, if the budget allows, opt for vehicles with fewer years of use when possible.

Will I Get Penalty Points for Speeding Based on Navigation Alerts?

Navigation alerts for speeding come in many types, and the penalty regulations for speeding vary depending on the type of vehicle. Speeding alerts from car navigation may result in penalty points and fines, or they may not. Additional details on penalty points for speeding are as follows: 1. Speeding within 10% of the speed limit: no fine, but 3 penalty points. 2. Speeding between 10% and 20% above the speed limit: a fine and 3 penalty points. 3. Speeding between 20% and 50% above the speed limit: a fine and 6 penalty points. 4. Speeding over 50% above the speed limit: 12 penalty points.

What Causes the Whitening of Spark Plug Electrodes?

The whitening of spark plugs can be caused by several factors: the engine's ignition timing being too early, poor cooling conditions; the use of low-quality fuel; cylinder leakage in the car, or insufficient installation torque. It is necessary to promptly clean the engine's carbon deposits and replace the spark plugs after cleaning. Steps to replace spark plugs: Open the hood, lift the engine's plastic cover, remove the high-voltage distributor wires, and mark each cylinder's position to avoid confusion. Use a spark plug socket to remove the spark plugs one by one. While removing them, check for external debris like leaves or dust and ensure they are thoroughly cleaned. Place the new spark plug into the spark plug hole, hand-tighten it a few turns, and then use the socket to tighten it further. Reinstall the removed high-voltage distributor wires in the firing order, then secure the cover. Spark plug replacement interval: Under normal maintenance conditions, spark plugs should be replaced every 40,000 to 60,000 kilometers. However, this may vary depending on the brand and engine type, so it's advisable to follow the owner's manual. You can refer to the following standards for maintenance replacement: Platinum spark plugs should be replaced at 40,000 kilometers, standard nickel alloy spark plugs at 20,000 kilometers, and iridium spark plugs at 60,000 to 80,000 kilometers.

Can You Get Triple Compensation for Buying a Used Car That Was in an Accident?

No, but if you purchase a car that was in an accident, you can negotiate compensation with the seller. If an agreement cannot be reached, you may pursue civil litigation. When buying a used car, pay close attention to the condition of key components such as the license plate, engine, and tires. Below is a detailed introduction to these car parts: 1. License Plate: Commonly known as a vehicle plate, it refers to the identification number mounted on the front and rear of the car. Typically made of aluminum, sheet metal, plastic, or paper, it displays the vehicle's registration number, region, and other relevant information. 2. Engine: The car engine is the device that provides power to the vehicle, acting as the heart of the car. It determines the car's performance, fuel efficiency, stability, and environmental impact. 3. Tires: Tires are circular elastic rubber products fitted on various vehicles or machinery to roll on the ground. Usually mounted on metal rims, they support the vehicle body, absorb external shocks, ensure contact with the road, and maintain driving performance.

Why does the reversing sensor keep beeping?

The reasons why the reversing sensor keeps beeping are as follows: 1. The reversing sensor probe is stuck with something, causing signal blockage. Solution: Check if there is anything blocking the sensor holes at the rear of the vehicle. 2. The rear wiper water pipe is leaking or water has seeped into the reversing sensor system. Solution: Seal the leak (or replace the pipe) and drain any accumulated water from the sensor system. 3. The sensor's ultrasonic signal is faulty, causing false alarms. Solution: Restart the engine, drive the vehicle to an open area, and try reversing again to see if the issue is resolved.

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