Talking about the use and maintenance of lead battery

Lead-acid batteries play a crucial role in the electrical systems of agricultural vehicles and tractors. Their lifespan is closely tied to proper usage and maintenance. Neglecting these aspects can lead to premature failure, which not only affects performance but also increases costs. Therefore, it's essential to follow best practices for battery care. In addition, unexpected damage may occur during operation. Taking immediate action or temporary fixes can prevent delays in farming activities and reduce potential losses. **Proper Use and Maintenance of Lead-Acid Batteries** 1. **Correctly Install Ground Poles** Most modern agricultural vehicles use silicon-rectifier generators, which require a negative ground. Older models with DC generators typically use a positive ground. Reversing the polarity can damage components like the diode and regulator. If the battery has no markings, you can identify the poles by their thickness—thicker is positive, thinner is negative. The positive terminal often shows more oxidation, appears darker brown, while the negative one is lighter gray. You can also test by placing two wires into a cup of diluted acid; the one producing more bubbles is the negative pole. 2. **Avoid Over-Discharging** When starting the engine, limit each attempt to 5 seconds. If the engine doesn’t start on the first try, wait 2–3 minutes before trying again. Do not attempt more than three consecutive starts without checking the issue, as this can drain the battery and cause damage. 3. **Winter Starting Tips** In cold weather, preheat the engine coolant and oil to reduce the load on the starter motor and lower the battery’s current draw. Avoid forcing the clamps if they are tight, as this could loosen the terminals. 4. **General Battery Maintenance** (1) Keep the battery clean. Spilled electrolyte, dirt, or dust can cause short circuits. Clean the terminals regularly and apply a thin layer of vaseline to prevent oxidation. Ensure the vent hole is clear to avoid pressure buildup that might crack the case. (2) Secure the battery firmly on the vehicle and use shock-absorbing pads to prevent damage during movement. If the case cracks or leaks, repair it immediately. (3) Check the electrolyte level periodically. Use a glass tube to measure the level without metal tools. Add distilled water when low, and replace with original density electrolyte if there’s leakage. After adding water, charge the battery to mix the solution evenly. (4) Regularly check the battery’s condition using a hydrometer or discharge fork. If unavailable, you can estimate by the brightness of a light or the volume of a speaker. Never check by short-circuiting the terminals, and keep metal objects away from the battery to avoid dangerous sparks. **Temporary Repairs for Common Battery Issues** During operation, some issues may arise. Quick fixes can help you continue working until a full repair is possible. 1. **Pole Corrosion or Breakage** If the terminal is corroded or broken, cut it off at the base, drill a 5mm hole, and screw in an M6 bolt. Wrap a copper tube around the pole, melt some lead, and pour it into the tube. Let it cool and harden before reattaching. 2. **Cracked Case or Cover** For minor cracks, dry the area and apply sealing material after heating. For larger cracks, use a hacksaw to create a V-groove and fill it with resin clay. For small cracks, heat the area, cut a V-shape, and apply adhesive. Let it cure before reuse. 3. **Plate Short Circuit** This is usually caused by damaged separators or excessive sediment. Replace the separator if necessary, or remove and clean the affected cell. If sediment is heavy, flush the battery with distilled water and recharge. 4. **Active Material Loss** If the active material on the plates is slightly loose, carefully remove the debris and reuse the battery. 5. **Plate Sulfation** Sulfation occurs when the battery remains partially discharged for long periods. To reverse this, charge the battery with a low current for an extended time. Follow a multi-step process: fully discharge, rinse with water, recharge, and repeat until the electrolyte density stabilizes. Afterward, perform a full charge and adjust the density to the correct level. 6. **Sealing Cracks** Small cracks can be fixed with a hot iron, while larger ones require removal and refilling. Before resealing, clean the area thoroughly with acid to ensure a strong bond. 7. **Disconnected Cell** If a single cell is disconnected, temporarily connect it with a thick wire to maintain power flow until a proper repair is made. By following these guidelines, users can significantly extend the life of their lead-acid batteries and handle emergencies effectively. Always prioritize safety and proper technique when working with batteries.

Fluorine-Containing Benzonitrile

Most products of Fluorine-containing Benzonitrile is a colorless transparent liquid and has a pungent odor. It was widely used in pesticides, pharmaceuticals liquid crystal material manufacturing. High efficiency, low toxicity and residue characteristics. Through extensive research and production practice, we have found some good manufacturing processes of fluoro-containing cyanophenyl products. In addition, we have groundbreaking research on ratio of raw materials, solvent selection, the choice of solvent concentration, related use of catalysts..

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