Five key details for the daily maintenance of forklift lead-acid batteries

Time：2025-07-23 14:02:44

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However, many people often neglect the daily maintenance of lead-acid batteries when using forklifts, which leads to a shortened battery life and affects the working efficiency of forklifts.

During the operation of forklifts, lead-acid batteries play a crucial role. They are like the "heart" of the forklift, providing power for its normal operation. However, many people often neglect the daily maintenance of lead-acid batteries when using forklifts, which leads to a shortened battery life and affects the working efficiency of forklifts. Here are five key details for the daily maintenance of lead-acid batteries in forklifts.
1. Standardize charging to ensure battery vitality
Charging is the top priority in the maintenance of lead-acid batteries for forklifts. Standardized charging operations can effectively extend the battery life. First of all, use the original charger for charging, as the parameters of chargers from different brands and models may vary. Non-original chargers can easily lead to undercharging or overcharging. Secondly, the charging environment should be well-ventilated, kept away from fire and heat sources, and avoid charging in high-temperature or humid conditions to prevent safety accidents.
When charging, first turn off the power of the forklift, then connect the charger to the battery. After charging is completed, disconnect the charger from the power supply first, and then disconnect it from the battery. In addition, pay attention to the charging time. Generally, it is best to charge the battery when its power is consumed to 20%-30%. Once fully charged, stop charging in time. Overcharging will cause a large amount of gas to be produced inside the battery, leading to the shedding of active materials on the plates and shortening the battery's lifespan.
2. Clean regularly to prevent performance decline
Regular daily cleaning of forklift lead-acid batteries can prevent dust, dirt and oxides from affecting battery performance. The recommended cleaning cycle is once a week. If the usage environment is harsh, the cleaning cycle can be appropriately shortened.
Before cleaning, be sure to disconnect the power supply first to ensure safety. Wipe the dust and dirt on the battery surface with a dry cloth. For stubborn stains that are hard to remove, you can dip a small amount of distilled water and gently wipe. Do not use corrosive liquids such as gasoline or alcohol. Oxides on the battery electrodes can affect the conductivity, leading to insufficient battery power supply. At this time, a special electrode cleaner or baking soda solution should be used for cleaning. After cleaning, dry it with a dry cloth and then apply a layer of vaseline to prevent re-oxidation.
3. Check the electrolyte and maintain the normal liquid level
The electrolyte is the key to the normal operation of forklift lead-acid batteries. It is necessary to regularly check the liquid level and density of the electrolyte. For maintainable batteries, the electrolyte level should be maintained at 10 to 15 millimeters above the plates. If the level is lower than the standard, distilled water should be added to replenish it. Do not add tap water or electrolyte, as tap water contains impurities that can contaminate the electrolyte, and the electrolyte can change the concentration inside the battery, affecting its performance.
When checking the density of the electrolyte, a hydrometer can be used. Under normal circumstances, the density of the electrolyte at 25℃ should be 1.28g/cm³. The density of the electrolyte will change at different temperatures and can be converted according to the temperature. If the density is too low, it indicates that the battery is not fully charged and needs to be charged in time. If the density is too high, it may be due to excessive addition of electrolyte or a lack of water in the battery, and corresponding treatment should be carried out.
4. Store correctly to avoid damage
When forklifts are not in use for a long time, the storage and maintenance of lead-acid batteries are particularly important. First of all, make sure the battery is fully charged before storage, as undercharged storage can cause sulfation of the plates, affecting the battery's lifespan. The storage location should be dry, well-ventilated and cool, avoiding direct sunlight and high-temperature environments. At the same time, it should be kept away from fire sources and metal items to prevent short circuits.
During storage, it is necessary to regularly check the battery's power level and recharge it every 1 to 2 months to keep the battery fully charged. For maintainable batteries, it is also necessary to check the electrolyte level. If the level is too low, distilled water should be added in time. In addition, when storing, the battery should be securely fixed to prevent damage to its internal components due to vibration.
5. Develop good usage habits to reduce wear and tear
Good usage habits can effectively reduce the wear and tear of lead-acid batteries in forklifts. When using a forklift, avoid sudden acceleration, sudden deceleration and prolonged low-speed driving. These operations will increase the battery discharge current and shorten the battery's service life. When the battery power drops below 20%, it should be charged in time. Do not wait until the power is completely drained before charging, otherwise it will cause damage to the battery.
In addition, it is necessary to avoid using the electrical equipment on the forklift, such as lights and horns, when it is not started to prevent the battery power from being consumed. In the cold winter, the battery of the forklift can be preheated before starting to reduce the starting load on the battery.
Questions and Answers
Question: Are there any special precautions for the maintenance of forklift lead-acid batteries in winter?
Answer: In winter, when the temperature is relatively low, the capacity of forklift lead-acid batteries will decrease. Therefore, attention should be paid to the temperature of the charging environment. It is best to charge in an environment of 15-25℃. If the temperature is too low, the charging time can be appropriately extended, but overcharging should be avoided. At the same time, it is necessary to avoid storing batteries for a long time at low temperatures, and proper insulation measures should be taken when storing them. During use, do not start the forklift multiple times in a row to avoid damaging the battery.
Question: Can a battery still be used if it shows signs of bulging?
Answer: The swelling of a battery is usually caused by overcharging, excessively high charging temperatures, or internal battery faults. In such cases, the battery's performance has been severely affected. Continuing to use it poses safety risks, such as leakage and explosion. Therefore, it is not recommended to continue using it and a new battery should be replaced in a timely manner.
In conclusion, the daily maintenance of lead-acid batteries for forklifts cannot be ignored. Only by paying attention to the above five key details can the service life of the battery be prolonged, the normal operation of the forklift be guaranteed, and work efficiency be improved. It is hoped that everyone can attach importance to the maintenance of the battery to enable the forklift to play a greater role.

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