Is there liquid in the maintenance free battery, and can the maintenance free battery be filled with

There must be, there is no liquid, it can't work, it's just adsorbed, there is a sponge-like material adsorption, there is no flowing liquid, when the hydrogen evolution reaction occurs, a part of the water will be lost, but if the charger ***, the hydrogen evolution reaction is not strong, the battery can be used until the end of life The water does not lose too much, and the battery that has lost water can also be repaired with liquid, provided that the battery is just a simple water loss, if there are other reasons, then the possibility of repair is not big.

Maintenance-free battery, no need to refill:

Due to the advantages of its own structure, the consumption of electrolyte is very small, and there is basically no need to replenish distilled water during the 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 ordinary batteries.

There are also two types of maintenance-free batteries on the market: the first one does not require maintenance (add replenishment solution) after adding electrolyte at the time of purchase; The other is that the battery itself has been added with electrolyte and sealed at the factory, and the user cannot add refill liquid at all.

Difference: The traditional battery is made of lead-antimony alloy, and the maintenance-free battery is made of lead-calcium alloy, the former is made of antimony, and the latter is made of calcium, which is the fundamental difference between the two. Different materials produce different phenomena:

Liquid reduction will occur in the process of use of traditional batteries, because the antimony on the grid will pollute the sponge-like pure lead on the negative plate, weaken the back electromotive force in the battery after full charge, resulting in excessive decomposition of water, and a large amount of oxygen and hydrogen escape from the positive and negative plates respectively, so that the electrolyte is reduced. By replacing antimony with calcium, the back EMF of the fully charged battery can be changed, the overcharge current can be reduced, and the vaporization rate of the liquid can be reduced, thus reducing the loss of electrolyte.

It is possible to add liquid.

Now with the development of battery technology, maintenance-free batteries are gradually replaced by ordinary batteries, and the main differences are as follows.

1. The self-discharge of the maintenance-free battery is relatively small, which can save a long time. The added acid is usually stored without electricity for three months, and the power can be reached within six months, and the battery can be reached in 1 to 2 times as long as the battery;

2. Normal use of maintenance-free batteries, so the battery does not add water, because the internal moisture of the battery will not be greatly reduced, so the battery is not sealed, and it is maintained throughout the month, so after a period of internal water reduction, put the water on the ordinary battery once.

Maintenance-free, even if the battery is used relatively early without regular battery maintenance, it can be stored for free for 6 months without refilling with water.

However, a "free" battery that does not require maintenance is not absolute.

1. The battery is stored for too long, and after six months or more, even if the process is maintained, it still needs to be replenished;

2. After the maintenance-free battery is used for 2 or 3 years, it does not need to be charged and repaired by peers, and the lack of water does not affect the maintenance of the internal maintenance-free battery, and the battery needs to be sealed for maintenance-free due to the need for heating, and the amount of water used to supplement the battery is used to increase the stored power, and then the battery is maintained.

It depends on the situation, some can and some can't.

Maintenance-free batteries due to their own structural advantages, electrolyte.

The consumption is very small, so there is basically no need to add liquid during the service life. But the maintenance-free is not really maintenance-free, but compared with ordinary batteries, there is no need to worry so much about maintenance.

If there is a real shortage of water, it must be replenished, otherwise it will not only lead to a decrease in the battery capacity, but also cause deformation of the internal structure. Of course, there are some maintenance-free batteries on the market, which have been added with the corresponding electrolyte and sealed at the time of delivery, and the user cannot add the refill solution at all.

Attention should be paid to the use of maintenance-free batteries.

1. The battery is charged at the factory, from the factory to the installation and use, and the battery capacity.

It will suffer different degrees of loss, and if it takes a long time, it should be replenished before being put into use. If the storage period of the battery does not exceed one year, it can be charged for 5 days under constant voltage only. If the storage period of the battery is 1 to 2 years, charge it for 5 days under constant voltage conditions only.

2. When the battery is float charged, it should be ensured that the float charge voltage value of each single battery is, if the float charge voltage is higher or lower than this range, the battery capacity or life will be reduced.

3. When the battery floats and runs, the voltage of the battery should not be lower, if the voltage of the battery is lower, it needs to be charged equally. The method of equalizing charging is: charging voltage only, charging time 12 hours.

4. When the battery is used in cycles, it is charged with constant voltage and current limit after discharge. The charging voltage is only, and the maximum current is not greater than the specific charging method: first use the current not greater than the above maximum current value for constant current charging, and when the average voltage of the single body rises to the average voltage of the single body, the average single voltage is changed to constant voltage charging until the end of charging.

Maintenance-free battery, also called dry battery, does not need to add liquid maintenance, it is not like lead-acid battery, the internal structure of lead-acid battery is composed of positive and negative plates, wood plywood, dilute sulfuric acid solution, when the water in the solution is partially evaporated in the process of charging and discharging, it is necessary to supplement the proportion of the plate and the solution. However, the internal materials and mechanisms of the dry battery are different, there are no positive and negative plates, and there is no dilute sulfuric acid solution, and the dry battery does not have a liquid filling port, nor does it need to be added for maintenance.

The advantages of the maintenance-free battery itself in the structure make it produce very little water decomposition when charging, and the amount of water evaporation is very low, coupled with the sealed structure of the shell, the sulfuric acid gas released is very small, so the maintenance-free battery does not need to add liquid compared with the traditional battery, the battery pile head and wire are rarely corroded, the starting current of the battery is large, and the power storage time is long.

After many tests, it is not possible to add the supplementary liquid mentioned on the Internet, on the contrary, after adding the liquid, the battery produces a self-discharge and heats up, the voltage is getting lower and lower, and the battery is completely scrapped.

If there is a shortage of water, of course distilled water can be added.

When overvoltage charging, the internal air pressure exceeds the set value of the pressure discharge valve, and then it is discharged to the outside, so the electrolyte loss is less under normal use conditions. However, ordinary batteries will produce acid mist, hydrogen and oxygen when charging, which will be discharged to the outside, and the electrolytic cell needs to be replenished regularly and the acid concentration adjusted.

The above are some differences in the working performance of the battery, now talking about the use conditions, the maintenance-free battery has higher requirements for temperature and charging and discharging conditions, when charging at too high voltage.

The internal pressure exceeds the threshold of the threshold will consume water and acid, and the ordinary maintenance plant can not supplement it, so the recovery performance is relatively poor after the performance deterioration, and because it is a lean liquid battery, the discharge capacity of the large current is relatively poor, not as good as the ordinary battery of the same capacity.

Because the plates of ordinary lead-acid batteries are made of lead-antimony alloy, oxygen and hydrogen will escape from the plates during charging, and the water in the electrolyte will slowly evaporate with the extension of use. The maintenance-free battery plate is made of lead-calcium alloy, and the water loss during the charging process is not obvious, and it is not less, and the fully sealed structure is adopted, even if a small amount of gas is generated, it will not overflow, so the maintenance-free battery rarely has a water shortage during the whole life cycle.

The maintenance-free battery can not be added with refill, and the maintenance-free battery has been added with the corresponding electrolyte and sealed at the time of delivery, and the user cannot add the refiller at all. Because the maintenance-free battery adopts a lead-calcium alloy grid, the amount of water decomposition generated during charging is small, the water evaporation is low, and the shell adopts a sealed structure, and the sulfuric acid gas released is also very small.

Therefore, compared with traditional batteries, it has the advantages of no need to add any liquid, less corrosion of the wiring pile head and wire, strong overcharge resistance, large starting current, and long power storage time.

The maintenance-free battery only produces a small amount of gas in the electrolyte under the normal charging voltage, the plate has a strong ability to resist overcharge, and has the characteristics of small internal resistance, good low-temperature starting performance, and longer service life than conventional batteries, so there is no need to add distilled water during the whole use period, and under the normal conditions of the charging system, there is no need to supplement the charge from dismantling.

Theoretically, no, but the battery can be repaired with a pulse repair device and water.

Maintenance-free and other ordinary batteries are all water batteries.

The battery consumes water during use, so if there is a shortage of water, add water.

The replenishment solution is distilled water with a little sulfuric acid (the specific gravity is very low, generally around).

Maintenance-free batteries work the same as water and electricity batteries, you can use a medical syringe to add distilled water, note that if you add too much to charge, it will overflow.

Of course, you can add it, and if you want a professional to add water, it is best to add refills.