Basic Maintenance Tips for Lead-Acid Batteries: Extending Lifespan and Improving Performance

Lead-acid batteries are widely used in various fields such as automobiles, electric vehicles, and UPS systems. Proper maintenance can extend their lifespan and reduce replacement costs. LONGWAY Battery provides basic maintenance tips for lead-acid batteries, focusing on storage management, charging guidelines, daily maintenance, and troubleshooting.

1. 1.Storage Management: Prevent Self-Discharge Loss

If a battery is not used for a long time, it should be fully charged before storage to prevent self-discharge. Store the battery in a dry, well-ventilated area, away from high temperatures, humidity, or dust. To allow for airflow and prevent overheating, ensure that there is at least a 0.5-inch (12.7mm) gap between batteries.

During storage:

• elow 25°C,charge the battery every 6 months.
• Around 30°C, charge every 3 months.
• Below 0°C, avoid leaving the battery discharged.

2. 2.Charging Guidelines: Avoid Overcharging and Deep Discharge

To prevent rapid battery aging, charge the battery after each use, even if it’s not fully discharged. Follow the recommended charging modes:

• Float Charging Mode(Standby Use): Set voltage to 2.25–2.30V/cell with a maximum charge current of 0.25C.
• Cycle Charging Mode (Cycle Use): Set voltage to 2.40–2.50V/cell with a maximum current of 0.25C.

If the temperature is below 20°C or above 30°C, adjust the charging voltage accordingly to avoid overcharging or undercharging.

3. 3.Daily Maintenance: Regular Checks and Cleaning

Lead-acid battery maintenance begins with regular inspections. Users should check the open-circuit voltage monthly or quarterly to ensure it remains within the normal range. A significant voltage drop may indicate battery degradation or a fault, requiring inspection and possible replacement.  

Additionally, battery terminals should be cleaned regularly. Over time, oxidation and dust can increase resistance and affect performance. Use a metal brush to clean the terminals and apply terminal protection spray to prevent corrosion.

4. 4.Troubleshooting: Identifying and Solving Common Issues

Common battery problems include:

• Melted terminals: Caused by loose connections or excessive discharge current. Check the connections.
• Bulging case: Caused by overcharging or high temperatures. Adjust charging parameters.
• High temperature: If the battery exceeds 50°C, stop charging and allow it to cool.

Proper maintenance of lead-acid batteries enhances their performance, extends their lifespan, and reduces the need for replacements. LONGWAY Battery is dedicated to assisting users in achieving optimal battery performance by providing clear and comprehensive maintenance guidelines. By adhering to these practices, customers can ensure that their products deliver reliable and long-lasting power across a variety of applications. Should you have any questions, please do not hesitate to contact us. We are always here to offer our assistance.