When the locomotive is running, if a buzzer alarm flashes, it should be charged in time. If the alarm is not charged for a long time, the locomotive may stop working on the way. When charging, first connect the charging plug to the battery pack plug, and then charge the charger when the power is turned on.
After charging is completed, the total power of the charger should be turned off, and then the battery pack is disconnected from the plug of the charger. (Do not allow continuous power supply, disconnect the charging plug directly)
