| abstract |
Provided is a valve-regulated lead storage battery which is intermittently charged, each charge being conducted for a short period, and which in a partial state of charge (PSOC) is discharged at a high rate to apply a voltage to a load. The battery shows higher charge acceptance and has better life characteristics under PSOC than conventional valve-regulated lead storage batteries. Use is made of a positive electrode plate in which the active material has a specific surface area of 5.5 m 2 /g or more. Use is made of a negative electrode plate in which the charge acceptance and life performance have been improved by adding a carbonaceous conductive material and a product of condensation of a bisphenol compound, aminobenzenesulfonic acid, and formaldehyde to a negative active material. The specific gravity of an electrolytic solution is set at 1.30-1.35. Thus, the valve-regulated lead storage battery is produced. |