A trickle charger generally consumes a very small amount of power. The exact consumption can vary depending on the brand and model of the trickle charger, but it is usually in the range of a few milliamps (mA). Trickle chargers are designed to charge the battery slowly and maintain the charge level without overcharging the battery. They only provide the necessary amount of power to compensate for the self-discharge loss of the battery. As a result, the power consumption of a trickle charger is very low. The low power consumption of a trickle charger makes it possible to leave it connected for extended periods, for example during the winter storage of vehicles, to ensure that the battery is always ready for use.