To let gases escape during charging

To let gases escape during discharging

To let gases escape during charging and discharging

To pour electrolyte

chemical energy to electrical energy

electrical energy to chemical energy

mechanical energy to electrical energy

electrical energy to mechanical energy

gas leaving the cells is highly explosive

gas produced by a sudden battery discharge is corrosive

spark and gas react to form dangerous fumes

spark can cause the battery polarity to reverse

one more than the negative plates

one less than the negative plates

two less than the negative plates

two more than the negative plates

diluted acid

clean distilled water

sulphuric acid and having a relative density of 1.280

an electrolyte similar to that used in the battery