What do the observation windows on the battery of yuasa automobile mean respectively?

When the car is running, the charging indicator lights up and out, indicating that the battery is charging. If the charging indicator lights up while driving, it indicates that the generator is out of order. Light emitting diodes can also be connected to battery charging lines, because the diodes are forward-directed and reverse-cut. Therefore, when charging, the lamp is on, and when the lamp is full, the lamp is not on.

When the car battery is charging, it can be charged by rotating the engine. Open the hood and you will see many belt connections, one of which is connected to the belt generator. When the engine is running, the generator is driven by a belt to generate the generated current. The current flows through the voltage stabilized transformer of the vehicle. The filtered current is supplied to the vehicle for use (e.g. lighting, sound, ignition coil) and additional parts. Car batteries will be recharged.
YUASA automobile battery top has a transparent part, the scientific name is the observation window, the engine in static state, when the observation window color is green, it shows that Tangshao battery is full, if it is yellow, it shows that the battery is a bit fed, when it is red, it means that serious feeding must be charged with a charger. When charging for about 8 hours, check whether the color of the observation window has changed, if it is still red. The color instructions need to be replaced with YUASA batteries.