What is the normal leakage current for a car?

[MackenzieMarie]

Under normal circumstances, the leakage current of a car is generally around 45 milliamperes. Cars have dark current, which falls within the normal range of leakage. There are two methods for charging the battery: Fast Charging (Constant Current Charging): Fast charging does not necessarily save time. It only quickly activates the surface of the battery, while the battery's interior is not fully charged. Slow Charging (Constant Voltage Charging): Another method for charging a car battery is slow charging, which takes 10-15 hours. Deeply discharged batteries must undergo slow charging; otherwise, insufficient charging time and inadequate charge will directly affect the car's driving performance. Causes of Battery Leakage: Short Circuit or Oxidation of Battery Plates: This leads to self-discharge and power loss, which is caused by internal battery discharge. This factor is an important indicator of the battery's quality. Grounding Circuit Causing Leakage: Leakage caused by grounding of car electrical components, wiring harnesses, sensors, controllers, actuators, and other electronic components and circuits leads to battery power loss. This is known as external battery discharge and is a latent circuit fault that must be identified and rectified.