Diluted hydrochloric acid
Concentrated ammonium chloride
Concentrated potassium hydroxide
Diluted sulphuric acid
To avoid short between positive and negative plates
To avoid short between plates and body
To avoid buckling effect
To avoid sedimentation effect
Spongy lead (Pb)
Lead peroxide (PbO2)
Lead sulphate (PbSO4)
Zinc sulphate (ZnSO4)
To reduce total voltage
To obtain higher current
To obtain higher voltage
To reduce current
Boost charge
Freshening charge
Trickle charge
Initial charge