The traction batteries used in electric aerial work platforms are generally ordinary lead-acid batteries, whose important advantages are stable voltage and high cost-effectiveness. By following these points in daily use and maintenance, the battery's lifespan can be effectively extended.
Routine checks are crucial
The top of the battery and the terminal connections should be kept dry, clean, free of dust and corrosion to prevent leakage or short circuit. If the battery surface is dirty, use a damp cloth or brush to clean the top, terminals, and connections with a mixture of baking soda and water, and then wipe it dry with a cloth to prevent the cleaning solution from entering the battery.
Inspect the battery cables, terminals, and wires for damage. Check the battery terminal joints and wire connections for oxidation and corrosion; clean or replace any damaged parts immediately. Also, check the battery cover for deformation or overheating; address any issues promptly.
It is recommended to check the battery electrolyte level weekly. If the electrolyte level is too low, it will damage the battery plates and separators, shortening the battery's lifespan. The method for checking the electrolyte level is as follows: Open the filler cap and check the level. If it is below the bottom platform inside the filler cap, the level is too low and electrolyte should be added immediately. If the level is level with or slightly above the top platform inside the filler cap, the level is appropriate.
Routine inspection
Regularly add liquid
Generally, if the electrolyte level is 10mm above the plates, no additional electrolyte needs to be added. If the electrolyte level is below the plates, distilled or deionized water should be added. Adding too much distilled water can cause electrolyte overflow, which will corrode the battery casing and cables, thus affecting the battery's lifespan.
The frequency of adding electrolyte depends on the battery's intended use and operating temperature. Generally, the longer a battery has been used, the more frequently it needs to be topped up. Before adding electrolyte, remove the vent cap and fully charge the battery. If the battery plates are already exposed above the electrolyte level, add water until it just submerges the plates before charging, then add distilled water. After adding electrolyte, reinstall the vent cap onto the battery.
Regularly add liquid
Standardized charging
Batteries should be fully charged after each use. Do not discharge more than 80% of their capacity within 5 hours; recharge when the charge level is between 35% and 80% of the rated capacity. Lead-acid batteries do not have a memory effect, so do not fully discharge them before recharging. Recharge new batteries after 3-4 hours of use each time. Batteries will release gas (bubbles) near the end of charging; therefore, charge in a well-ventilated area away from open flames. Also, be especially careful not to charge batteries that are not currently being charged.
Standardized storage
Before storing a battery, it must be fully charged and stored in a cool, dry place protected from weather. Disconnect it from the equipment before storage to eliminate the potential danger of battery leakage. The battery will gradually self-discharge during storage; monitor the electrolyte specific gravity or battery voltage every 2-4 weeks. If the battery capacity drops below 70%, it should be recharged. Stored batteries should be recharged before installation.
Safety precautions should be taken during maintenance.
When inspecting and maintaining batteries, wear protective clothing, gloves, and goggles. Do not place any maintenance tools or other metal objects on the battery surface. The battery temperature should not exceed 60°C during use. Keep the battery away from sparks, flames, and metal objects. If electrolyte splashes onto skin or eyes, rinse thoroughly with plenty of water and seek medical attention if necessary. If electrolyte splashes onto clothing, remove the clothing, rinse with water, and then wash with a mild alkaline soap solution. If electrolyte leaks externally, neutralize with lime, strong sodium bicarbonate, or sodium carbonate, and then flush with plenty of water.
