How to determine the good or bad lead-acid battery?

　　Author ：Iflowpower – Portable Power Station Supplier

The lead-acid battery (VRLA) is an electrode important from lead and its oxide, and the electrolyte is a battery of sulfuric acid solution. In the lead-acid battery discharge, the important component of the positive electrode is a lead, negative electrode is lead; in the state of charge, the important components of the positive and negative electrode are the lead of sulfate. How to test the lead-acid battery? A nominal voltage of a single lead-acid battery is 2.

0V, which can be discharged to 1.5V, which can be charged to 2.4V; in use, it is often used in series with 6 single lead-acid batteries to consist of a lead-acid battery that is 12V.

24V, 36V, 48V, etc. Electrochemical reaction valve controlled lead-acid battery in electrode is as follows. Charging is to connect external DC power to the battery, so that the electrical energy is converted into chemistry energy.

Discharge is that the electric energy is released from the battery to drive external equipment. When the VRLA battery charging will reach the vertex, the charging current is only used to analyze the water in the electrolyte. At this time, the battery is censusing oxygen, the negative pole is born with hydrogen, and the gas will overflow from the battery, resulting in reduction of the electrolyte, need not to add water on time.

On the other hand, under the end of the charging or overcharge conditions, the charging energy is used to analyze the water, the positive pole-generated oxygen and the negative sponge lead, so that a portion of the negative electrode is in a unpleassed state, inhibiting the negative of the negative hydrogen. How to test the lead-acid battery of the lead-acid battery is a lead-acid battery that is often used in everyday life. Sometimes it will not be able to do it, go to the maintenance point 4S shop, they usually offer you new No need.

How to test the lead-acid battery? 1. First, you have to check the battery's electro-eye to judge the good or bad, in general, the green is good, red is bad, white or black is to charge or add the electrolyte, this detailed look at the density ball to see the electro-eye What color, explain, generally stated. 2.

Secondly, charging the battery. Generally, one-time charging is around 8 hours, and it can restore about 80% of the capacity of the new battery, and it can be continuously used. 3.

After charging, it will not beat the fire. If the tester is tested, it will continue to discharge in 5- seconds in a normal discharge. If the discharge voltage is less than 8 volts, it will illustrate the battery problem, because you are a battery that is just charge, no There is a loss of loss.

4. Next, use the discharge instrument to continue monitoring, turn the battery's single-skin, press the discharge button, if there is any single-handed sustained bubble, then that single-hand is damaged, record it. 5.

Then use the densitometer to detect each monurractable density, if the density of the single line is larger than other single-density, then the single-handed is damaged. Replacing a single-handed professional operation, if you are not a professional, offer you to replace the battery, or ask a professional repair. Use conditions (1) to prevent direct contact with the metal container pen, should use an acid and heat-resistant material, otherwise it will cause smoke or combustion.

(2) Charge the specified charger under the specified criteria, otherwise it may cause overheating of the battery, deflation, leak, burning or crushing. (3) Do not install the battery in a sealed device, otherwise it may make the equipment. (4) When using the battery in a medical device, please install the backup power outside the main power supply, otherwise the main power failure will cause injury.

(5) Place the battery away from the place where the spark equipment is kept, otherwise the spark may cause the battery to smoke or break. (6) Do not place the battery near the heat source (such as transformers), otherwise it will cause battery overheating, leakage, burning or crushing. (7) When using the number of medium batteries more than one, make sure that the battery connection is correct and the charger or load connection is incorrect, otherwise the battery is broken, burned or battery damage, and in some cases will hurt people.

(8) Pay special attention to let the battery are on the foot. (9) The specified use range of the battery is as follows. Being out of this range may cause battery damage.

The normal operating range of the battery is: 77.f (25 ¡ã C) Battery after discharge (mounted in the equipment): 5.f to 122.

f (-15 ¡ã C to 50 ¡ã C) After charging: 32.f to 104.f ( 0 ¡ã C to 40 ¡ã C) medium: 5.

f to 104.f (-15 ¡ã C to 40 ¡ã C) (10) Do not put the battery mounted on the locomotive at a high temperature, direct sunlight, the stove or fire, otherwise May cause battery leakage, fire or broken. (11) Do not use the battery in a dusty place, it may cause battery short circuit.

When using batteries in a dust-free environment, check the battery regularly. Life 1, discharge depth discharge depth is stopped in the process of discharged during the process. 100% depth pointing all capacity.

Lead-acid battery life is affected by discharge depth, the focus of design consideration is deep cycling, shallow cycling or floating charge. If the battery used by the shallow cycle is used in deep cycle, the lead-acid battery will quickly fail. Since the positive electrode active material neutral binding is no longer bonded, the lead is generated when discharge is discharged, and the charge is restored to the lead, the molar volume of the lead of the lead of the cells is larger, and the active material volume expansion is expanded when discharged.

If a molar oxide is converted to lead, the volume is added 95%. Thus repeated contraction and expansion, the mutual binding between the particles of the neutral particles is gradually relaxed, and it is easy to fall off. If the active material of a molar of the elixir is only 20% discharge, shrink, the extent of expansion is greatly reduced, and the combination resistance is slow.

Therefore, the deeper the discharge depth, the shorter its cycle life. 2 Shorten the use period when overcharge. 3, the temperature of the temperature of the lead-acid battery life is extended with temperature rise.

At 10 ¡ã C 35 ¡ã C, each liter is 1 ¡ã C, about 56 cycles, between 35 ¡ã C 45 ¡ã C, 25 ¡ã C, 25 cycles per liter, more than 50 ¡ã C, due to negative electrode vulcanization capacity Loss and reduced life. Battery life increases with temperature in a certain temperature range, because the capacity increases with temperature increases. If the discharge capacity is unchanged, the discharge depth is lowered, and the lack of life is prolonged at the temperature rise.

4, the concentration of sulfuric acid affects the addition of acid density, although the positive electrode plate capacity is advantageous, but the self-discharge of the battery increases, the corrosion of the grid also accelerates, which also causes the looseness of the lead in the cell, and the acid density is used in the battery. Added, low cycle life. 5, the effect of discharge current density increases with the discharge current density, the battery life is lowered, as the positive electrode neutral is loose falling off under large current density and high acid concentration conditions.

How to test the lead-acid battery? Installation and commissioning (1) Use tools with insulated sleeves such as pliers, etc. Using non-insulated tools can cause battery short circuit, fever or combustion, damage battery. (2) Do not place the battery in a closed room or near the fire source, otherwise it may cause explosion or fire due to the hydrogen released by the battery.

(3) Do not use thinner, gasoline, kerosene or synthetic liquid to clean the battery. Using the above material can cause the battery case to crush the leak or fire. (4) When a 45 volt or higher voltage is resolved, take safety steps to bring insulated rubber gloves, otherwise it may be shocked.

(5) Do not put the battery in a place that may be flooded. If the battery is immersed in the water, it may burn or .