How to test maintenance-free battery?

There is corrosive material on the exterior of the battery pole post, do not need to deal with, as long as it is not loose. If corrosive substances appear on the surface, corrosion will occur on the inner surface of the terminal, which will increase the resistance value and affect the normal charging and discharging of the battery, must be handled in time.

In the use of maintenance-free storage battery, simply think free maintenance is without any maintenance is the wrong idea. Although free maintenance can reduce maintenance costs and times, but for the appearance of cleaning is indispensable, so said "no maintenance" more point within the battery.

When the liquid level is low, distilled water should be used as much as possible. Pure water should not be used instead of distilled water. Because pure water contains many kinds of trace elements, it has adverse effects on the battery.

To prolong the service life of the battery, avoid the happening of anchor, etc, we in the free maintenance battery maintenance should be paid attention to the following:

Also want to check the maintenance free battery electric eye color. Green power is enough; Black as the battery is low, need to supplement charge; Lack of gray or pale yellow to electrolyte, as maintenance-free battery not charging, should immediately replace the battery.

Battery should be put in the car, in case the battery on the road for vibration attachment loss, avoid the power outage.

To keep the battery surface clean. If found to have solid oxide in a column, should be timely watering with hot water, to be clear, lest affect polar column and the connections between the connectivity. After clean, storage battery to wipe clean surface, in a column and terminal buttered and ensure no oxidation to a column.

Check the height of the electrolyte once a month at least. Battery for no marker, the electrolyte to the 10-15 mm can be higher than plate; there are two red line of the battery, the electrolyte is no more than the red line above.

Adjust the concentration of the electrolyte according to the region and season. In the winter to the concentration of the electrolyte concentration is 1.28 g/ml.

Long-term need not car every other month or so cars should be mobilized, medium speed running about 20 minutes.

Every time a car's total length of no more than five seconds, restart time interval is not less than 15 seconds. In the case of start many times still no car from circuit, ignition coil, or oil, and other aspects to find the reason, troubleshooting and start the engine.

The sealed maintenance-free battery adopts the newly designed fully sealed structure and modern production process in the 1990s. It provides high performance, long life, polluting-free, maintenance-free, safe and reliable performance.

When charging, electrical energy is converted into chemical energy, which is converted into electrical energy during discharge. When the battery is discharged, the metal lead is a negative electrode, which undergoes an oxidation reaction and is oxidized to lead sulfate; the lead dioxide is a positive electrode, and a reduction reaction occurs, and is reduced to lead sulfate. When the battery is charged by direct current, the two poles respectively produce lead and lead dioxide. After removing the power supply, it returns to the state before discharge, forming a chemical battery with internal dynamic balance. A lead storage battery is a battery that can be repeatedly charged and discharged, and is also called a secondary battery.

Lead-acid battery chemical reaction equations are as follows:

The discharge -

PbO2+2H2SO4+Pb≒PbSO4+2H2O+PbSO4

Please charge

Sealed and maintenance-free battery USES the latest design fully sealed structure and in the ninety s modernization production process. Has the high performance, long life, no pollution, free-maintenance, safe and reliable performance.

Commonly used batteries are divided into four categories, respectively, the common battery, dry battery, wet charge batteries and battery four without maintenance.

Common battery

Common battery plate is made up of lead and lead oxide, the electrolyte is sulfuric acid aqueous solution. It is the main advantage of voltage stability, the price is cheap; Shortcoming is lower than can (that is, the storage battery power) per kilogram, short service life and maintenance frequency.

Dry lotus battery

It is the full name of dry charged lead-acid battery, it is the main characteristic of negative plate has higher storage capacity, in the condition of dry completely, can save the electricity generated by in two years, when using, need to join the electrolyte, etc. It can be used in 20 to 30 minutes.

Wet charge battery

Its plate is charged state, with a small amount of electrolyte, and most of the electrolytic liquid inhaled baffle plate and plate stored in a storage battery.

Maintenance free storage battery

Maintenance-free battery due to its structural advantages, the consumption of the electrolyte is very small, in the service life of the basic don't need to add distilled water. It also has a shock resistant, high temperature resistant, small volume, the characteristics of uniformity general twice of the normal battery service life. The free maintenance battery on the market has two kinds: the first in one-time add electrolyte later use when buying does not need to maintain fluid (add supplementary); Battery itself is another good factory had already added electrolyte and block, users won't add supplementary fluid.

General battery lead-acid battery is made up of positive and negative plate, plate, shell, electrolyte and wiring and other components of the pile head, the discharge of chemical reactions is depend on the positive plate active substances (lead dioxide and pb) and the negative plate active substances (spongiform pure lead) in the electrolyte (dilute sulphuric acid solution), under the action of the plate grid frame, traditional battery lead antimony alloy, maintenance-free battery is made of lead calcium alloy, the former with antimony, the latter with calcium, which is fundamental to both the mark. Different material can produce different phenomena: traditional battery will happen in the process of using liquid reducing phenomenon, this is because the gate frame of antimony can lead pollution on the negative plate spongiform pure, weakened after fully charged battery in the counter electromotive force, caused by excessive water decomposition, a large number of oxygen and hydrogen escape from the positive and negative plates respectively, reduce the electrolyte. Use calcium instead of antimony, can change the counter electromotive force after fully charged battery, reduce charging flow, liquid vaporization rate reduce, thereby reducing the loss of the electrolyte.

Due to the free maintenance battery USES lead calcium alloy grid frame, charging when the water quantity is little, low moisture evaporation, coupled with the outer seal structure, the acid gases released is very few, so it is compared with the traditional battery, do not need to add any liquid, pile head for wiring, wireless corrosion, overcharge resistance is strong, large starting current, power advantages of long storage time.

Maintenance-free battery because of its under normal charging voltage, electrolyte to produce only small amounts of gases, plate has a strong ability to resist charging, and has a small internal resistance, cold starting performance is good, than conventional battery service life is long, etc, and therefore does not need to add distilled water, throughout the duration in the charging system under normal circumstances, do not need to supplement charge from removed. However, the specific gravity of the electrolyte should be checked during maintenance.

Most maintenance-free batteries have a hole-shaped liquid (temperature-compensated) hydrometer on the cover that changes color depending on the specific gravity of the electrolyte. It can indicate the storage state of the battery and the height of the electrolyte level. When the indicator eye of the hydrometer is green, it indicates that the charging is sufficient, the battery is normal; when the indicator eye green point is little or black, it indicates that the battery needs to be charged; when the indicator eye shows light yellow, it indicates that the battery is faulty inside and needs to be repaired or Replace it.

When conditions permit, the maintenance-free battery can be charged with a charging device with current-voltage characteristics. The device ensures sufficient power and avoids overcharging and consumes more water.

General from the factory to use this kind of free maintenance battery can store 10 months, its voltage and capacitance remains the same, poor quality in the factory about 3 months after the voltage and capacitance will fall. Choose when buy is 3 months from the date of production, you can check the battery voltage and capacitance on the spot whether meet the requirements of the directions, if there is a decrease in the voltage and capacitance of the material is bad, it is inside so that the quality of the battery must also not line, it is possible that water battery after charging distributor in disguise.

Use the maintenance

Maintenance-free battery charged can also supplement, charging ways and common battery charging method is essentially the same. Charging each single cell voltage should be limited to 2.3-2.4V. Pay attention to using conventional charging method consumes more water, charging current when charging should be slightly smaller (below 5 a).Cannot be quick charge, otherwise, the battery may explode, causing cuts. When the hydrometer of the maintenance-free battery is displayed in light yellow or red, it indicates that the battery is near scrapped, even if it is recharged, the service life is not long. Charging at this time can only be used as an expedient measure for emergency.

Proper maintenance

Proper use and maintenance of battery has the following seven points:

1. Check if the fixing bolt of the battery on the bracket is tight. If the installation is not secure, the housing will be damaged due to the running vibration. Also, do not place metal objects on the battery to prevent short circuits.

2. Always check if the pole and terminal are connected reliably. To prevent oxidation of the terminal, a protective agent such as petroleum jelly can be applied.

3. It is not possible to check the battery's power by direct ignition (short-circuit test). This will cause damage to the battery.

4. Ordinary lead-acid battery should pay attention to add distilled water on a regular basis. Dry lotus battery charged best appropriate before use. For adding water and maintenance-free battery is not can't maintain appropriate view when necessary supplement distilled water helps to prolong the service life.

5. Battery cover on the hole should be smooth. When charging, battery produces a large number of bubbles if vent blockage of gas cannot escape when the pressure increases to a certain extent will cause the battery shell burst.

6. There is often a yellow-white paste around the battery pole and cover, which is caused by sulfuric acid corrosion of the column, line card, fixed frame and so on. The resistance of these substances is very large and should be removed in time.

7. When the two batteries need to be used in series, the capacity of the battery is preferably equal. Otherwise it will affect the battery life.

The role of UPS

The battery is the energy storage device of the UPS. Normal power grid, it will depend on the charging circuit provide grid of electrical energy into chemical energy storage; Mains interruption of power supply, it will release chemical energy into electricity to maintain UPS uninterruptible power supply.

Battery to choose

The battery selected by the UPS should pay attention to the standard or short backup time and must have the characteristic of outputting large current in a short time. There are 3 kinds of commonly used batteries, all of which belong to lead-acid batteries, and their models are HS (slurry high-efficiency lead battery), CS (covered lead battery) and M (sealed lead-acid battery), and sealed lead-acid batteries. It is the most commonly used. The electrolyte of the sealed lead-acid battery is basically constant and has no loss. This is because sealed lead-acid batteries use advanced cathode absorption sealing technology. The adoption of this technology can extend the interval of adding distilled water to more than 5 years. In order to ensure safe and reliable operation of the sealed battery, the charging current required to charge the battery must not exceed the maximum charging current allowed by the battery. The chargers of UPS adopt the grading constant current and constant voltage charging mode, that is, the constant current charging is adopted in the initial stage of charging, and the charging current is limited to the current value of one of the specified value or the rated capacity of the battery. After charging for a certain period of time, it is changed to constant voltage charging, that is floating charging.

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