current and time

voltage and resistance

internal resistance

specific resistance of the plate

35 percent sulphuric acid and 65 percent water

65 percent sulphuric acid and 35 percent water

65 percent nitric acid and 35 percent water

35 percent nitric acid and 65 percent water

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