Patent ID: 8728651
Filing Date: 2014-05-20
Classification: H01M,Y02E,Y02P,Y02T

Abstract:
1. A valve regulated lead-acid (VRLA) battery comprising a plurality of interconnected spiral-wound cells, each cell having a non-conductive case containing a spiral-wound positive grid plate, a spiral-wound negative grid plate, each of the positive and negative plates having a first edge and a second edge on a side opposite the first edge and parallel with a spiral winding direction wherein each of a plurality of tabs is connected to only the first edge of the positive and negative grid plates, a spiral-wound separator between the plates, the positive and negative grid plates and the separator having a length (L) less than a diameter (D) such that the L/D ratio ranges from about 0.1 to less than about 0.8, an acidic electrolyte, and a positive post and a negative post disposed through the case for electrical connection to an adjacent cell in series.