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Nowadays, cars generally use maintenance free batteries, and a car battery generally has a service life of about 3 years. The original battery of a new car can be used for more than 3 years. In addition, if you frequently travel long distances, it may take longer. If you run more in the city, it usually takes about two years

A dry car battery, also known as a maintenance free battery, has the advantage of a fully enclosed top cover that does not require maintenance and will not splash electrolyte to pollute the vehicle. The top cover is equipped with an electric eye for easy observation. However, the disadvantage is that the electrode plate is relatively thin and the starting ability is weak, but it cannot be added after the liquid is added.

Water batteries, also known as rechargeable batteries, have the advantages of thick electrode plates, strong starting ability, and marked with upper and lower liquid level lines on the outside. When there is a shortage of liquid, it is easy to add liquid. The disadvantage is that the electrolyte is easy to leak out of the filling hole, polluting the vehicle.

The water batteries used in cars are divided into regular batteries and maintenance free batteries

Batteries are most afraid of low temperatures, and their capacity in low temperature environments is much lower than that at room temperature. A normally used battery in a warm place will suddenly run out of battery in a cold place.

Therefore, before the cold season arrives, ordinary batteries should check the electrolyte height. If necessary, the electrolyte of the battery should be replenished, the electrolyte density should be adjusted, and its storage condition should be checked. If necessary, it should be charged. Regular batteries and maintenance free batteries, while cleaning the battery wiring harness and applying special grease for protection, ensure reliable starting and extend battery life.

The general lifespan of a battery is about two years

Water batteries generally refer to batteries that require frequent maintenance with water and have visible liquids; Dry batteries refer to batteries without flowing liquid (this is a colloquial term that is not very accurate), and can be used in any position except when placed upside down. Nowadays, most of them use dry batteries! Water batteries are only used in large trucks, and if they are used for a long time, they are prone to leakage and have poor safety!

What you mean by dry batteries is actually called "maintenance free batteries"

In fact, the electrochemical reaction in ordinary lead sulfate batteries cannot be separated from water. Whether it is a sealed maintenance free battery or a colloidal battery, water is needed to complete charging and discharging. Therefore, in fact, all lead sulfate batteries are water batteries, but the way they store water is different

1. The most common type is the so-called water battery, where the battery plates are soaked in dilute sulfuric acid. During the charging and discharging process, water will evaporate, requiring regular addition of distilled water and removal of impurities and powders deposited at the bottom

2. Sealed maintenance free battery, using paper filled with dilute sulfuric acid as the reaction carrier for the electrode plate, the advantage is that it can be used upside down. When the battery is not charged or discharged very strongly or the battery is not very hot, the battery maintains a certain degree of sealing to avoid water evaporation. However, when the battery temperature is relatively high, there is still a certain amount of water running out. After using the battery for a period of time, a small amount of distilled water needs to be added. At the same time, because there is no flowing solution in the battery, the substances peeled off from the electrode plate will not deposit to the bottom, causing a short circuit in the battery. But these substances will continue to cover the surface of the electrode plate until too much, and the battery's storage and discharge capacity will be weakened, making it difficult to clean. Therefore, some people say that maintenance free batteries are actually unable to maintain the battery

If you don't have enough experience to determine when to add water and clean battery impurities, it is recommended to use a sealed maintenance free battery. When the battery has poor energy storage, replace it with a new one

However, in terms of service life, adding water to the battery is a bit longer and the current intensity is better. My previous battery was regularly filled with water, filtered, and charged with an intelligent charging pool. It has been used for 8 years and has always been started with a battery, so its storage performance is not much worse than the new one

Car battery, also known as battery, is a type of battery that works by converting chemical energy into electrical energy. Usually, the term battery refers to lead-acid batteries. It is a type of battery mainly made of lead and its oxides, with an electrolyte of sulfuric acid solution.

The normal service life ranges from 1 to 8 years, which is closely related to the condition of the vehicle. It can be used for more than 3 years when the vehicle's generator is charged back normally and there is no electrical leakage or grounding. If you feel that the battery cannot be charged or the starter motor is weak, and the headlights are noticeably dim, you need to remove the battery and use a charger to charge for 12-24 hours. If it still cannot be charged and the mileage reaches 50000 kilometers or more, and the generator is not faulty, you need to consider replacing the battery. Generally, domestic maintenance free brands such as Fengfan, Zhengye, and Feifan are good, and the price varies from 200 to 1000 yuan depending on the battery model.

Car battery

Car battery

After some batteries are used up, their internal resistance becomes very high, and they can be fully charged and discharged immediately. It is normal to measure their no-load voltage with a multimeter. So, it is not possible to measure the no-load voltage by light, but also to measure its discharge current, which can be measured using a discharge meter. It is normal for the voltage to not be lower than 10V during discharge. If it is lower than 10V, it indicates that the battery may be broken and must be replaced. The lower the voltage when adding a load, the greater the internal resistance of the battery and the poorer the discharge characteristics.

The intelligent battery detection and repair device adopts a composite resonant pulse technology, which uses its harmonics to resonate with the inherent resonant frequency of the battery electrode plate lead sulfate crystal, thereby breaking the lead sulfate crystal, dissolving it in the electrolyte, and participating in chemical reactions again. This device integrates detection and repair, with the characteristics of simple operation, accurate data, no need to add repair fluid, and extremely low repair cost. It can recover more than 96% of its capacity in one day. The device is controlled by a microcomputer program, with simple operation and no need for dedicated personnel to be on duty. The current, voltage, and time display are all displayed using digital tubes, with high accuracy and efficient repair of various lead-acid batteries such as cars, motorcycles, electric vehicles, UPS, etc. It is the preferred equipment in the lead-acid battery repair industry!

Ordinary battery

The electrode plate of a regular [2] battery is composed of lead and lead oxide, and the electrolyte is an aqueous solution of sulfuric acid. Its main advantages are stable voltage and low price; The disadvantages are low specific energy (i.e. the energy stored per kilogram of battery), short service life, and frequent daily maintenance.

Dry load battery

Its full name is dry type charged lead-acid battery. Its main feature is that the negative electrode plate has a high energy storage capacity. In a completely dry state, it can store the obtained electricity for two years. When in use, only electrolyte needs to be added, and it can be used after 20-30 minutes.

Car battery

Car battery

Maintenance free batteries

Due to its structural advantages, maintenance free batteries consume very little electrolyte and do not require the addition of distilled water during their service life. It also has the characteristics of shock resistance, high temperature resistance, small size, and small self discharge. The service life is generally twice that of a regular battery. There are also two types of maintenance free batteries on the market: the first type is to add electrolyte at the time of purchase and do not require maintenance during use (adding supplementary liquid); Another type is that the battery itself is already filled with electrolyte and sealed when it leaves the factory, so users cannot add any replenishment solution at all.

It uses a lead plate filled with sponge shaped lead as the negative electrode, a lead plate filled with lead dioxide as the positive electrode, and 22-28% dilute sulfuric acid as the electrolyte. During charging, electrical energy is converted into chemical energy, and during discharge, chemical energy is converted back into electrical energy. When the battery is discharged, the metal lead is the negative electrode, which undergoes an oxidation reaction and is oxidized to lead sulfate; Lead dioxide is the positive electrode that undergoes a reduction reaction and is reduced to lead sulfate. When a battery is charged with direct current, the two poles generate lead and lead dioxide, respectively. After removing the power source, it returns to its pre discharge state and forms a chemical battery. Lead acid batteries are batteries that can be repeatedly charged and discharged, called secondary batteries. Its voltage is 2V, usually used by connecting three lead-acid batteries in series, with a voltage of 6V. The car uses 6 lead-acid batteries connected in series to form a 12V battery pack. Ordinary lead-acid batteries need to be supplemented with sulfuric acid after a period of use to maintain the electrolyte containing 22-28% dilute sulfuric acid.

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