Electrosynthesized dedoped polyaniline (anode) and doped poly-1-naphthol (cathode) were used as electrode materials in a new rechargeable battery containing lithium perchlorate and perchloric acid in methyl cyanide (MeCN) as the electrolyte. The cell gave an open-circuit potential (OCP) of 1.4V, a specific capacity of 150Ahkg−1 and an energy density of 113Whkg−1 (at a 1.0V cutoff). The cell lost ∼5% of its capacity after 1 week due to the self-discharge. The charging/discharging tests (0.0–1.4V) showed a gradual decrease in capacity up to 15% after 100 cycles. An advantage of such battery is the high power density (∼9kWkg−1 at OCP) because of the extended surface area of the polymer layer compared to the metal electrode.