We should stop regular inspection of the battery, so how to find the lack of capacity of the battery? The common methods of discrimination are as follows. Using a multimeter to check can only check the voltage of the battery, not as a capacity test. Some damaged batteries will have a voltage of 12V when they stop the voltage test. The reason for the damage is not the single cell damage of the battery, but the blockage of the plate pores. The resulting capacity is lacking, so the voltage drop of the battery will not be formed.

Experienced repairmen can judge whether the battery can continue to be used through the speed of the engine when starting, but because this kind of judgment is too objective, the basis for the judgment cannot be informed to the owner, and whether the judgment is correct or not is directly related to the degree of the repairman, so Unable to implement operation. Observation window There is an observation window on the maintenance-free battery, and the quality of the battery can be judged by observing the color inside.

However, this observation is only a rough judgment of the electrolyte density and liquid level in the battery. It can only judge whether the battery is damaged, but it cannot judge whether the cold start capacity of the battery is sufficient or whether it can continue to be used. It is necessary to distinguish the difference between "not broken" and "usable". A battery that is not broken in the inspection window may not be usable.

It is too objective to judge whether the battery can continue to be used through the use of time. Because different car owners have different driving habits, cars with the same use time have different car conditions, and the service life of the battery will also be very different, so this method of judgment is also not advisable. How does the tester correctly determine whether the battery can be used normally? The author can better detect the starting capacity of the battery with the battery tester, so as to judge whether the battery can be used normally.