What technique is most effective for maintaining battery longevity?

Maintaining battery longevity is best achieved by keeping the battery clean and charged. A clean battery prevents dirt and corrosion from interfering with the electrical connections, which can hinder performance. Regularly charging the battery helps to keep it at an optimal state, preventing deep discharges that can shorten the battery's lifespan. A consistently charged battery is less susceptible to sulfation, a process where lead sulfate crystals build up on the battery plates and can lead to reduced capacity and battery failure.

Frequent full discharges are harmful to most automotive batteries, as they can lead to damage over time. Allowing a battery to sit unused for extended periods can also lead to deterioration of its charge and overall health. Overcharging can cause excessive heat and damage to the battery's internal components, further reducing its lifespan. Thus, maintaining a clean and consistently charged battery stands out as the most effective approach for maximizing battery longevity.