A trickle charger is a type of battery charger designed to provide a slow and steady charge to a battery. It is often used for maintaining the charge of lead-acid batteries in vehicles, motorcycles, and other equipment. By delivering a low current, it prevents overcharging and helps extend the battery's lifespan. These chargers are particularly useful for batteries that are not used frequently, as they keep the battery topped off without the risk of damage. Many trickle chargers come with automatic shut-off features, ensuring that the battery remains healthy and ready for use when needed.