its electrolyte is sulphuric

it is a wet cell

its chemical action is reversible

its electrolyte has a high specific gravity

12 h

8 h

20 h

100 h

overcharge the battery

clean the plates with distilled water

remove the electrolyte

remove electrolyte and dry up the battery and store the same in a cool, dry and clean place

Ni - Cd

Ni - Fe

Alkaline magnesium

Lead-acid

high internal resistance

high nominal voltage

low initial cost

all the three stated above