Does the car battery need to be recharged?

Of course, it needs to be recharged, otherwise no matter how big the battery is, it will soon run out.

When the battery is seriously short of power, it needs to be replenished in time. The charging capacity of the car itself is not enough, so the battery can only be charged with a charger.

It takes 20 minutes to charge the starting battery of a car, but the car battery can be charged by the engine, and its normal service life is about 2-3 years.

The battery life is about to expire, and we usually feel that the headlights are not on as before, or the car won't catch fire when it's cold. If a similar situation occurs, it is necessary to check whether it is time to change the battery.

Extended data:

Battery is an indispensable part of automobile, which can be divided into traditional lead-acid battery and maintenance-free battery. Because lead-calcium alloy is used as the grid frame of storage battery, the amount of water decomposition and evaporation during charging are low. In addition, the shell adopts a sealed structure, and little sulfuric acid gas is released. Therefore, compared with the traditional battery, it has the advantages of no need to add any liquid and long storage time of the wiring pile.

Battery usage:

(1) If the battery is not used for a long time, it will slowly discharge itself until it is scrapped. Therefore, the car should start regularly to charge the battery. Another method is to unplug the two electrodes on the battery. It should be noted that the positive and negative electrode wires should be removed from the electrode post, and the negative electrode wire should be removed first, or the connection between the negative electrode and the automobile chassis should be removed. Then unplug the plus sign (+) at the other end. The battery has a certain service life and needs to be replaced in a certain period. The same sequence should be followed when replacing, but when connecting the electrode wires, the sequence is just the opposite, first connecting the positive electrode and then connecting the negative electrode.

(2) When the ammeter pointer shows that the storage capacity is insufficient, it should be charged in time. The storage capacity of the battery can be reflected on the dashboard. Sometimes on the way, I find that there is not enough power to start the engine. As a temporary measure, you can ask other vehicles for help, start the vehicle with their batteries, and connect the negative electrodes of the two batteries to the negative electrodes and the positive electrodes to the positive electrodes.

(3) The density of electrolyte should be adjusted according to the standards of different regions and seasons.

(4) When the electrolyte is insufficient, distilled water or special rehydration should be added. Never drink pure water instead. Because pure water contains a variety of trace elements, it will have adverse effects on batteries.

(5) When the car is started, the battery will be over-discharged and damaged due to the uninterrupted use of the starter. The correct way to use it is that the total time of starting the car at one time should not exceed 5 seconds, and the interval of starting it again should not be less than 15 seconds. If the car still doesn't start for many times, we should find the reason from other aspects such as circuit, ignition coil or oil circuit.

(6) In daily driving, always check whether the hole on the battery cover is ventilated. If the hole in the battery cover is blocked, the generated hydrogen and oxygen can't be discharged, and the expansion of electrolyte will make the battery shell burst, which will affect the battery life.

References:

Baidu encyclopedia-automobile storage battery