The core shell structure of lead- activated carbon synthesised through chemical methods. The lead (Pb) can be a core of functions. Activated carbon have been covered lead metal as a shell. The lead-activated carbon (Pb-Ac) core-shell structure is effective applications for negative electrode in the leadacid and ultra battery applications. The activated carbon have a role of preventing lead particles growth and oxidation of lead metal. In order to get high capatance on the negative electrode , activaled carbon could be used. This types of structure have large charge acceptance and slow polarization of negative electrode in the lead-acid battery. Core-shell type might be highly applicable to ultra battery for increase capactiance of energy staorage system.