Beneficial effect of carbon-PVA colloid additives for lead-acid batteries

Based on the previous success of adding ultra-fine carbon-PVA (polyvinyl al cohol) colloid solution to restore performance of weak batteries, a large s cale test programme of practical batteries including those used in forklift , golf cart, taxi cab, truck and bus applications from 150 companies was ca rried out. More than 95% of the tested batteries exhibited excellent recove ry in performance parameters including the specific gravity (S.G,), voltage and operation time (Ah capacity). The work reported here includes basic re search studies to understand better the beneficial action of the carbon-PVA colloid additive. (C) 1999 Elsevier Science S,A. All rights reserved.