Generally, automotive batteries discharge Hydrogen Gas during both the charging and discharge cycles.
Hydrogen
A battery typically gives off the most gas when charging has just begun, especially if it is a lead-acid battery. This initial phase can produce gas due to electrolysis, particularly if the charging rate is high. As the battery approaches full charge, gas production usually decreases, although overcharging can still lead to gas emission. Therefore, the early stages of charging are when gas release is most pronounced.
Hydrogen gas.
Hydrogen
Hydrogen
Because a battery gives off hydrogen gas when it is charging and discharging. Be careful not to create sparks around a battery especially when jumpering because hydrogen is volitile.
Have the charging system checked. The light comes on when there is a charging system problem. it may be a battery, alternator or a battery problem.
battery will make a gurgling sound when being charged while being charged, the acid(liquid) in battery heats up. u should not hear this in normal conditions in a vehicle should only hear it when on a battery charger check that sides of battery are not bulging.this is a sign that the battery is about worn out and is over charging, have battery, alternator and coplete charging system checked. batteries give off a gas when charging if overcharging, this gas is highly explosive and any small spark can ignite it
No.
Dead battery, Alternator not charging, Ignition off draw draining battery,.............
The alternator switches off
It is a good thing to disconnect the negative battery cable when charging, so no damage can occur to the car's computers.