What is a special extended normal charge given periodically to batteries called?

The term special extended normal charge periodically given to batteries is known as an equalizing charge. This type of charging is specifically administered to lead-acid batteries to balance the charge between individual cells. Over time, charges can become uneven due to various factors such as temperature fluctuations, differences in self-discharge rates, and varied usage patterns. An equalizing charge helps to restore balance, prevent sulfation (which can occur when some cells become over-discharged or under-charged), and extend the overall lifespan of the battery system.

The equalizing charge is typically applied in a controlled manner, with careful monitoring to ensure that cells do not overheat or become damaged. Understanding this process is crucial for maintaining optimal battery performance, particularly in applications where reliable power is critical.

Other types of charging mentioned, like trickle, maintenance, and float charges, have distinct characteristics and purposes. Trickle charging provides a low-level charge to keep a battery topped off, maintenance charging is meant for regular charging during idle times without overcharging, and float charging maintains a constant voltage to keep batteries at full capacity without charging them beyond that state. While these methods are important for battery care, they do not specifically involve the periodic special extended charge aimed at equalizing cell volt