Maintenance Free Battery
“Maintenance-free” batteries have revolutionized the automotive industry, but the term can be misleading. While these batteries do not require regular water refills, they still need proper care to ensure optimal performance and longevity.
The key advantage of maintenance-free batteries is their sealed design, which minimizes water loss and extends lifespan. This is achieved through advanced grid alloys, such as calcium or silver-calcium technology, reducing self-discharge and enhancing durability. However, routine checks are still necessary—keeping the terminals clean, securing the cables, and ensuring timely recharging can prevent unexpected failures.
As a leading maintenance-free battery manufacturer in China, Powsea provides premium-quality, reliable car batteries designed for superior performance and long service life. Browse our selection of high-performance maintenance-free batteries below!

38B20L
The Powsea 38B20L MF Battery is a high-quality maintenance-free battery designed for compact vehicles and small-engine applications. Built with reliable calcium-calcium technology, this battery delivers consistent starting power, excellent vibration resistance, and extended service life. Its compact JIS B20 case size makes it ideal for a wide range of Asian vehicles, including models from Toyota,…