Can dry batteries be charged?

Wear protective clothing when charging lead-acid batteries.

When charging, there should be no sparks near the battery and smoking is prohibited.

When charging one or more batteries in parallel, the charger voltage should not exceed 16V.

Correct charging method of battery

There are more and more electric devices in today's cars, and when using these electric devices, the owner should try not to overload the battery. Overloading of the battery will reduce the life of the battery. It is important to have the correct battery charging method.

First, connect the positive pole of the battery to the positive pole of the power supply, and connect the negative pole of the battery to the negative pole

The initial charging is carried out in two stages: first, the initial charging current is charged to the electrolyte to release bubbles, and the single cell voltage rises to 2.3 to 2.4V. Then, the current is reduced to 1/2 initial charging current, and the charging is continued until the electrolyte discharges a vigorous bubble, which is stable for 3 consecutive hours. The total charging time is about 45~65h.

During the charging process, the temperature of the electrolyte should be measured by halving the current, stopping charging or cooling. The temperature should be controlled at 35~40 °C. When the initial charging is completed, if the specific gravity of the electrolyte is not specified, use distilled water or electrolysis with a specific gravity of 1.4. The liquid is adjusted. After adjustment, recharge for 2 hours until the specific gravity meets the requirements.

Tip: The battery is usually replaced once in two or three years.

Avoid battery charging errors

No initial charging

The first charge of the battery is called initial charge, and the initial charge has a great influence on the service life and charge capacity of the battery. If the charging is insufficient, the battery charge capacity is not high, and the service life is also short; if the battery is excessively charged, the electrical performance of the battery is good, but it will shorten its service life, so the new battery should be carefully charged for initial charging. For dry-charged lead-acid batteries, according to the instruction manual, if it is used within the specified two-year storage period, as long as the electrolyte of the specified density is left for 15 minutes, it can be put into use without charging. However, if the storage period is more than two years, due to partial oxidation on the plate, in order to increase its charge capacity, it should be recharged before use and charged for 5h-8h.

No supplementary charging

Some drivers often neglect to recharge the battery in use. Because the battery is not fully charged in the car, it is easy to cause the plate to vulcanize; at the same time, the amount of charge and discharge in use is unbalanced. If the discharge is greater than the charge and the battery is in a deficient state for a long time, the battery plates will slowly vulcanization. This chronic vulcanization will reduce the charge capacity of the battery until the start is weak, which greatly shortens the service life of the battery. In order to reduce the active material on the battery plate in time, reduce the vulcanization of the plate, increase the charge capacity of the battery, and prolong its service life, the battery in the vehicle should be periodically recharged.

Battery overcharge

The battery is often overcharged, even if the charging current is not large, but the electrolyte "boiling" for a long time, in addition to the easy to fall off the fine particles on the surface of the active material, the grid is excessively oxidized, causing the active material and the grid to loosely peel off.

Polarity reversal when charging

Due to the battery positive and negative plate material is different, in addition to the active material, negative plate also added barium sulfate, humic acid, carbon black and rosin and other materials, to prevent the negative plate contraction and oxidation. In addition, the number of negative plates in each single cell battery is always more than the number of positive plates, and the negative plate is slightly thinner than the positive plate. When the initial charge or supplementary charge of the battery, if you do not pay attention to polarity, will make the battery charge, so that the positive and negative almost all become coarse grain PbSO4, resulting in insufficient charge capacity of the battery, cannot work normally, and even lead to the scrap of the battery. Therefore, the charge must pay attention to the polarity, must not be reversed polarity charge.

Check the appearance of the car battery before starting. The battery should be intact, free from cracks, and there is no obvious trace of battery acid leakage.

If the car has any of the above injuries, do not start the car to avoid hurting yourself or others.

The battery is divided into a liquid-rich battery and a maintenance-free battery. The liquid-rich battery can see the internal liquid through the visual appearance. The maintenance-free battery case is opaque, and the internal liquid is not visible, but it is also required to add liquid. Because lead-acid batteries, as the name suggests, only use lead plates and electrolytes to generate chemical energy, there is input and output of electrical energy.

Electric vehicle battery is poor fluid cell, the electrolyte are invisible to the internal, electrolyte were adsorption to partition, if you want to completely replace the electrolyte is difficult, mainly is what reason to need to replace the electrolyte, because of the poor liquid battery electrolyte is of very high purity, than buy or outside themselves with higher purity. Electric electrolyte proportion is usually 1.30 1.34 of dilute sulphuric acid capacity, if you want to match, the proportion of dilute sulfuric acid while measuring line, join after a full charge proportion generally at about 1.37 battery repair is feasible according to the battery itself, as the case may be, for the battery damage is divided into a lot of kinds, damage of hardware and software damage or life end etc a variety of reasons, most batteries are on the market can repair, the part of the battery can also repair after repair can achieve an ideal state.

The page contains the contents of the machine translation.