A trickle charger is a type of battery charger designed to provide a low, steady charge to a battery over an extended period. It is commonly used for maintaining the charge of lead-acid batteries in vehicles, motorcycles, and other equipment. By delivering a small amount of current, it helps prevent battery depletion without overcharging. These chargers are particularly useful for batteries that are not frequently used, as they keep the battery topped off and ready for use. Many trickle chargers come with built-in safety features to prevent overheating and overcharging, ensuring the longevity of the battery they are connected to.