charging an accumulator

charging a dry cell

discharging an accumulator

discharging a dry cell

its terminal voltage

the colour of its electrolyte

the level of its electrolyte

its terminal voltage and specific gravity of its electrolyte

1.18

1.15

1.25

1.35

alkaline batteries only

alkaline and solar batteries

alkaline and dry batteries

nickel-cadmium and nickel-iron batteries

water to hydrochloric acid

sulphuric acid to water

hydrochloric acid to water

water to sulphuric acid