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The difference between maintenance free batteries and batteries that require water is significant

Maintenance-free ones are better.

According to the existing types of batteries in the market, batteries can be roughly divided into two types: traditional lead-acid batteries and maintenance free batteries that have just been widely used in China in recent years.

Lead acid batteries are composed of positive and negative plates, separators, shells, electrolytes, and terminal blocks. The chemical reaction of discharge relies on the active substances of the positive and negative plates under the action of the electrolyte (dilute sulfuric acid solution). The grid of the plates is made of lead antimony alloy. Traditional batteries may experience liquid depletion during use, as antimony on the grid can contaminate the lead on the negative electrode plate, causing excessive water decomposition. A large amount of oxygen and hydrogen can escape from the positive and negative electrode plates, resulting in a decrease in electrolyte.

Maintenance-free batteries are made of lead calcium alloy. Due to the use of lead calcium alloy as the grid frame, the amount of water decomposition generated during charging is low, and the evaporation of water is also low. In addition, the sealed structure of the shell releases very little sulfuric acid gas. Therefore, compared with traditional battery cells, it has the advantages of no need to add any liquid, less corrosion to the terminal heads, wires, and vehicle body, strong resistance to overcharging, high starting current, and long battery storage time.

The electrolyte (water) in traditional lead-acid batteries is consumed and needs to be added regularly; The so-called maintenance free battery means that there is no need to inspect or add water (electrolyte) throughout its entire service life. Generally speaking, the work of adding water to the battery will be carried out by 4S technicians during regular maintenance, which is also a very simple maintenance. In terms of performance, there is almost no difference in the performance and durability between maintenance free and water added batteries. So for buyers and users, there is not much difference between the two types of batteries, so there is no need to worry about the batteries that need to be maintained.

If you really can't handle it in your heart, then replacing a maintenance free battery on your own is only a few hundred yuan.

Can be charged, the so-called maintenance free battery refers to a battery that does not require maintenance or frequent addition of electrolyte during normal use. Other uses are no different from regular batteries, and as for charging, there is no need for special deflation. The battery is designed with exhaust holes at the factory and is usually placed in the car. As long as the engine is started, the battery is always in a charging state. In addition, the battery needs to be disassembled for charging. It is best to use a dedicated battery charger to avoid damaging the battery. If your car battery runs out of battery after only a month of use, you can consider whether the car's power generation has malfunctioned, resulting in insufficient or no power generation, usually due to damage to the generator or silicon rectifier. Suggest checking to avoid significantly reducing the lifespan of the new battery due to long-term power loss.

Maintenance-free batteries are now widely used in vehicles. They are actually a type of lead-acid battery, but the acid is adsorbed on the asbestos partition between the battery plates. In our profession, it is also called a lean liquid battery. Compared with ordinary batteries, it does not emit acid mist during normal charging and discharging. The hydrogen and oxygen during water splitting are also converted back into water through the catalyst and pressure inside the battery. When overvoltage charging occurs, when the internal pressure exceeds the set value of the pressure relief valve, it is discharged outside. Therefore, under normal usage conditions, electrolyte loss is reduced. Ordinary batteries, on the other hand, produce acid mist, hydrogen, and oxygen during charging, which are discharged to the outside and require regular replenishment of the electrolytic cell and adjustment of the acid concentration.

The above are some differences in the working performance of batteries. Now let's talk about the usage conditions. Maintenance-free batteries require high temperature and charging and discharging conditions. When charged at high voltage, internal pressure exceeding the threshold will consume water and acid, and ordinary repair shops cannot supplement it. Therefore, after performance degradation, the recovery performance is relatively poor. In addition, due to being a poor liquid battery, the discharge capacity of high current is relatively poor, not as good as that of ordinary batteries of the same capacity.

Early cars used ordinary lead-acid batteries, but many vehicles still use them today. Ordinary lead-acid batteries are more suitable for starting cars with high current due to their full electrolyte, low internal resistance, and excellent high current discharge performance. When charged at a high voltage, they can be discharged in a timely manner without generating internal high voltage, and there will be no bulging problem of maintenance free batteries. Moreover, because each battery compartment has a liquid filling port, it can be checked and filled with electrolyte regularly, so there will be no problem of insufficient liquid exposing the electrode plate. As long as it is regularly maintained, its service life is far higher than that of maintenance free batteries. Moreover, when used in a sports and open environment, the escaping acid mist can be dispersed in a timely manner and will not cause corrosion to the vehicle. The main problem is to prevent liquid leakage, and to achieve this, ordinary batteries are better than maintenance free ones

Maintenance-free batteries are now widely used in vehicles. They are actually a type of lead-acid battery, but the acid is adsorbed on the asbestos partition between the battery plates. In our profession, it is also called a lean liquid battery. Compared with ordinary batteries, it does not emit acid mist during normal charging and discharging. The hydrogen and oxygen during water splitting are also converted back into water through the catalyst and pressure inside the battery. When overvoltage charging occurs, when the internal pressure exceeds the set value of the pressure relief valve, it is discharged outside. Therefore, under normal usage conditions, electrolyte loss is reduced. Ordinary batteries, on the other hand, produce acid mist, hydrogen, and oxygen during charging, which are discharged to the outside and require regular replenishment of the electrolytic cell and adjustment of the acid concentration.

The above are some differences in the working performance of batteries. Now let's talk about the usage conditions. Maintenance-free batteries require high temperature and charging and discharging conditions. When charged at high voltage, internal pressure exceeding the threshold will consume water and acid, and ordinary repair shops cannot supplement it. Therefore, after performance degradation, the recovery performance is relatively poor. In addition, due to being a poor liquid battery, the discharge capacity of high current is relatively poor, not as good as that of ordinary batteries of the same capacity.

Early cars used ordinary lead-acid batteries, but many vehicles still use them today. Ordinary lead-acid batteries are more suitable for starting cars with high current due to their full electrolyte, low internal resistance, and excellent high current discharge performance. When charged at a high voltage, they can be discharged in a timely manner without generating internal high voltage, and there will be no bulging problem of maintenance free batteries. Moreover, because each battery compartment has a liquid filling port, it can be checked and filled with electrolyte regularly, so there will be no problem of insufficient liquid exposing the electrode plate. As long as it is regularly maintained, its service life is far higher than that of maintenance free batteries. Moreover, when used in a sports and open environment, the escaping acid mist can be dispersed in a timely manner and will not cause corrosion to the vehicle. The main problem is to prevent leakage, and with this, regular batteries are better than maintenance free ones.

1、 Lead acid batteries are divided into dry batteries and wet batteries.

2、 The difference between these two types of batteries is that:

1) Dry batteries belong to the primary batteries in chemical power sources and are a type of disposable battery. Because the electrolyte of this chemical power supply device is a non flowing paste, it is called a dry battery, which is relative to batteries with a flowing electrolyte. You can add battery water, but do not exceed the maximum water level, usually marked with a MAX line. Dry load lead-acid batteries (such as automotive dry load batteries, motorcycle dry load batteries, etc.) should be supplemented with distilled water after a period of use to maintain a density of about 1.28g/ml of dilute sulfuric acid electrolyte; For maintenance free batteries, distilled water is no longer required until the end of their lifespan.

2) A wet battery is a lead-acid battery, which is formed by the hydrolysis and release of liquid from flowing acid.

Generally speaking, 80% of batteries are distinguished by color: white is a water battery, and black is a dry battery; Judging by weight, light is a water battery, while heavy is a dry battery; Distinguished from appearance accessories: the screw that adds water to the battery is water, while the flat head is dry.

2、 Lead acid batteries are mainly divided into three categories:

1) Ordinary batteries; The electrode plate of a regular 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.

2) Dry charged lead-acid battery: Its full name is dry charged lead-acid battery, and its main feature is that the negative electrode plate has a 2V lead-acid battery

High energy storage capacity, able to store the obtained electricity in a completely dry state for two years. When in use, simply add electrolyte and wait for 20-30 minutes before use.

3) Maintenance-free batteries: Due to their structural advantages, maintenance free batteries consume very little electrolyte and do not require distilled water supplementation 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.

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