PURPOSE: To provide a sealed lead acid battery wherein a life can be extended by preventing stratification of an electrolyte in a clearance formed between a plate and a retainer.

CONSTITUTION: An auxiliary liquid holding layer 6 mainly composed of silica is formed between a positive plate 3 and a retainer 5. The silica used for forming the auxiliary liquid holding layer 6 is prepared first by mixing water- contained silicon dioxide with colloidal silica, heating an obtained mixture to prepare a dewatered object, and next by crushing this dewatered object. Silica powder thus prepared is kneaded by an electrolyte and screen process printed in a surface opposed to the retainer 5 of the positive plate 3, to form the auxiliary liquid holding layer 6.