At anode :‌‌‌‌PbSO4(s)+2e−→Pb(s)+SO42−(aq) At cathode :‌PbSO4(s)+2H2O→PbO2(s)+SO42−(aq)+4H++2e−      –––––––––––––––––––––––––––––––––––––––––––– Net reaction :‌‌‌2PbSO4+2H2O→PbO2+PbO2+2H2SO4      ––––––––––––––––––––––––––––––––––––––––––––