New colloidal and organic-carbon additives for lead acid batteries

A new colloidal carbon black with organic polymer was found to be an excellent additive for lead acid batteries. The new colloidal additive regenerated inactive negative electrodes but has no beneficial effect for positive electrodes. A 5% to 10% colloid solution is added to the electrolyte of deteriorated batteries. The additive is produced by a roller mill and is inexpensive. Therefore, it is useful for large batteries such as those used in electric vehicles and forklifts.