Will the battery burn out if it is short-circuited?
2 Answers
If the short-circuit time is very short, there is no big problem. However, if it lasts for a long time, the wires may melt, internal high temperatures may cause melting, the plates may deform, the battery may swell and fail, and even cause a fire accident. The following is additional information: Solutions for a burned car battery: Remove the battery, charge it once with a charger, clean the corrosion at the connection points, and reinstall the battery. Use a multimeter to measure the contact resistance at the battery terminals. If it exceeds 100 milliohms, the contact resistance is too high, and you should replace or clean the terminals. If not, you can only replace the battery. Causes of a burned car battery: Circuit short-circuit: The car interior contains many complex electronic components and circuits. Once a short-circuit occurs, not only will the electronic components be damaged, but the battery may also burn out. Excessive charging voltage: Most battery failures are caused by prolonged excessive charging voltage. Electrolyte loss: The battery contains electrolyte. Once leakage occurs, it indicates the need for immediate replacement; otherwise, it will lead to other circuit failures. Long-term complete discharge of the battery: Frequent and prolonged complete discharges of the battery will accelerate its aging, thereby shortening its lifespan.
Absolutely, a short circuit in the battery can indeed burn it out, and I've seen many such cases. A battery short circuit refers to the accidental direct contact between the positive and negative terminals, such as tools falling onto the terminals during repairs or aging cables becoming exposed and touching each other. At this point, the current becomes extremely large, instantly generating high heat, which can easily cause the battery's internal plates to melt or bend, and the electrolyte to boil or even spray out. In severe cases, the battery may deform, emit smoke, or worse, potentially leading to a fire or explosion. Although cars have fuse protection, some older vehicles have poor designs where the fuse blows too slowly during a short circuit, causing the battery to fail directly. Once, a friend's car had a battery short circuit that sparked, costing over a thousand yuan to replace the battery and nearly damaging nearby circuits. For prevention, it's recommended to regularly check the battery terminals and cables for corrosion or looseness and avoid tampering with the car's electrical system in rainy weather. A quick glance at the battery's condition before daily driving can save a lot of trouble.
