What Causes Car Battery Drainage?
2 Answers
Under normal circumstances, the reasons for car battery drainage include: when the battery is not in use, it loses 0.02-0.03 charge per day; if the anti-theft alarm is activated, it also consumes a certain amount of power; certain things may not be properly turned off, such as the trunk or reading lights. Below is a detailed introduction to car batteries: 1. Introduction: A car battery, also known as a storage battery, is a type of battery that works by converting chemical energy into electrical energy. The commonly referred to car battery is a lead-acid battery, which is mainly made of lead and its oxides, with sulfuric acid solution as the electrolyte. 2. Conventional Battery: The plates of a conventional battery are composed of lead and lead oxides, with an aqueous solution of sulfuric acid as the electrolyte. Its main advantages are stable voltage and low cost; the disadvantages are low specific energy (i.e., the amount of electrical energy stored per kilogram of battery), short service life, and frequent daily maintenance.
Car battery discharge is quite common, and I've encountered it several times. Usually, it's due to the battery aging and developing internal short circuits, causing it to discharge slowly on its own; or forgetting to turn off the headlights or trunk lights, which drains the battery quickly; it could also be a problem with the alternator not charging properly, leaving the battery depleted; then there's the issue of battery performance dropping rapidly in extremely cold or hot weather; lastly, if aftermarket electrical devices like dash cams are wired incorrectly, they can also cause leakage. It's advisable to develop the habit of turning off lights and disconnecting power when parking, avoid leaving the car unused for long periods and drive it regularly to keep the battery charged, and if you notice any abnormal dashboard lights, check the battery connections early to ensure they're not loose or corroded. Safety first—prevention is better than cure.
