How to detect good or bad lead-acid lead battery?

　　Author ：Iflowpower – Portable Power Station Supplier

The lead-acid battery (VRLA) is made of a electrode mainly made of lead and its oxide, and the electrolyte is a battery of a sulfuric acid solution. In the lead-acid battery discharge, the main component of the positive electrode is a lead, the main component of the negative electrode is lead; the main components of the positive and negative electrode are lead-specific leads. 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 the application, it is often used in series with 6 single lead-acid batteries to consist of a lead-acid battery.

24V, 36V, 48V, etc. Electrochemical reactions in electrochemical reaction valve controlled lead acid batteries 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 decompose the water in the electrolyte. At this time, the battery is generated by oxygen, the negative electrode produces hydrogen, and the gas will overflow from the battery, resulting in reduction of the electrolyte, and needs to be added.

On the other hand, under the end of the charging or overcharge conditions, the charging energy is used to decompose water, the oxygen generated by the positive electrode and the sponge lead in the negative electrode, so that a portion of the negative electrode is in a unfilled state, inhibiting the generation of negative hydrogen gas. How to detect a lead-acid battery for 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 recommend that you replace new, In fact, there is no need.

1. First of all, you have to check the battery's "Electro-Eye" according to the description of the electric eye, generally, green is good, red is bad, white or black is to charge or add the electrolytic solution, this specific density What is the color of the ball, indicating that it is generally stated. 2.

Secondly, charging the battery. Generally, the charge can be restored to about 80% of the capacity of the new battery at one time, you can continue to use. 3.

After charging, it will not beat the fire. If the detector is used, the discharge is generally discharged for about 5- seconds. If the discharge voltage is less than 8 volts, it will show that the battery has problems, because you are the battery that is just charge, no There is a loss of loss.

4. Next, use the discharge instrument to continue monitoring, open the single-handed battery, press the discharge button, if there is a single line of continuous bubbles, then that single can be damaged, record it. 5.

Then test each single density with a densitometer. If the density of the single, the density is different from other monurrators, then the single-alone is damaged, both cases need to replace single-handed processing. Replacing a single needle requires professional operation, if you are not a professional, I suggest you replace the battery or ask a professional repair.

Conditions (1) Avoid direct contact with metal containers, 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 the battery can be overheated, deflated, leaked, burning or rupture. (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 can be generated, otherwise the spark may cause the battery to smoke or rupture. (6) Do not place the battery in the vicinity of the heat source, otherwise it will cause overheating, leakage, burning or rupture.

(7) When the number of batteries in the application exceeds one, make sure that the battery connection is correct and the charger or load connection is correct, otherwise the battery is broken, burned or battery damage, and in some cases will hurt people. (8) Special attention Don't 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 rupture.

(11) Do not use a battery in a dusty place, it may cause a 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 very 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 increased by 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 only 20% discharge of the active substance of the lead of the elixir, 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 application period when charging.

3, the temperature affects lead-acid battery life with temperature increase. At 10 ¡ã C - 35 ¡ã C, 1 ¡ã C per liter, about 5--6 cycles, between 35 ¡ã C - 45 ¡ã C, 25 ¡ã C, 25 cycles per liter, more than 50 cycles, above 50 At ¡ã C reduces life due to negative electrode vulcanization capacity. Battery life increases with temperature in a certain temperature range, because the capacity increases with temperature increases.

If the discharge capacity is unchanged, the depth of discharge is lowered, and the lanshire is prolonged at the temperature rise. 4 , Low cycle life. 5, the effect of discharge current density As the discharge current density increases, the battery life is lowered because the positive electrode neutral is loose falling off in high current density and high acid concentration conditions.

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 materials can cause the battery case to rupture the leak or fire. (4) When processing a battery of 45 volts or higher voltage, take safety measures 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 electric shock. (6) Please process slowly when removing the battery.

Don't make battery crack, leak. (7) When putting the battery on the device, we should try to put it in the bottom of the device for inspection, maintenance and replacement. (8) Do not move the battery when the battery is charged.

Do not underestimate the weight of the battery, uncomfortable processing may cause harm to operators. (9) Do not cover the battery with materials that produce static electricity. Static electricity will cause fire or explosion.

(10) In the battery terminal, the insulating cover is used on the connecting piece to prevent electric shock. (11) The installation and maintenance of the battery requires qualified special people. Unskilled people do that operations can cause dangerous.

Work hard to.