Abstract: [Problem] To provide a pasting paper for lead acid batteries compatibly achieving inhibition of electrolyte stratification, a high-rate dischargeability, and charge acceptability in a lead acid battery to be used in an ISS system. [Means for Resolution] A pasting paper for lead acid batteries, which is a nonwoven fabric composed of an insulating fiber and an electrically conductive material, wherein the average fiber diameter in the nonwoven fabric is 2.0 ?m or less, and the coefficient of variation of sheet resistivity of the nonwoven fabric indicating that the electrically conductive material is distributed in a non-uniform manner in the nonwoven fabric is 0.03 or more.

Abstract: [Problem] To provide an optimum separator that simultaneously has basic physical properties essential for the characteristics of a separator for valve-regulated lead acid batteries and liquid absorbability while taking into account the improvement of the battery capacity and battery life and the good battery assembly performance. [Solution] The aspect ratio (average fiber length/average fiber diameter) of a glass fiber in a separator is 130 to 205, the tensile strength of the separator is 0.20 N/mm2 or more, and the elongation percentage at break of the separator is 2.0% or more and less than 9.0%.

Abstract: [Problem] To provide a separator (AGM separator) for valve-regulated lead acid batteries that does not undergo delamination due to bonding between the separators even under severe conditions (a pressure in winding, a high temperature and a high humidity in transportation and storage). [Means for Resolution] A separator (AGM separator) for valve-regulated lead acid batteries, containing a microglass fiber and a heat-fusible organic fiber, the separator having a thickness under a pressure of 20 kPa of more than 0.50 mm and less than 1.80 mm and having a bonding strength between the separators after being left for 48 hours under a pressure of 5 to 10 kPa in an environment of a temperature of 70° C. and a humidity of 75?% of less than 0.10 N.

Abstract: [Problem] To provide a nonwoven fabric (pasting mat) that does not undergo bonding between the nonwoven fabrics (pasting mats) even under severe conditions (a pressure in winding and a high temperature and a high humidity in transportation, storage, and production). [Means for Resolution] A pasting mat for lead acid batteries, containing a microglass fiber and a heat-fusible binder fiber, the pasting mat having a thickness under a pressure of 20 kPa of 0.1 mm or more and 0.5 mm or less, and having a bonding strength between the pasting mats after being left for 48 hours under a pressure of 5 to 10 kPa in an environment of a temperature of 70 to 90° C. and a humidity of 75% of less than 0.05 N.