Characteristics of electrosynthesized polyaniline were mea-sured with the potential sweep methods, effects of pH on conductivity ofpolyaniline have been studied,polyaniline was used as positive electrodeactive materials of polyaniline-lead secondary battery,charge/dischargebehavior of polyaniline-lead secondary battery and conlomb efficiencyhave been investigated.

The principle to select primary battery or secondary battery was demon.

For example, the mobile phone user increased to almost 335 million, led the development of small size secondary battery; the development of household mini digital electrical equipment products enhanced heavy load and high power discharge performance of primary battery.

Test and separation system for rechargeable battery based on network platform;

Cycle life detector for rechargeable battery;

Nano-TiO 2/polyaniline was used as a positive electrode active material for Zn│Nano-TiO 2-PANI rechargeable battery.

Introduced uncertainty projects about dimensions, open-circuit voltage, on-load voltage and service output of primary batteries and secondary batteries.

The working-principle of Li-MnO2 battery was described.

By explaining working-principle of Li-MnO2 battery and analyzing safety problems resulting from abuse of cylindrical Li-MnO2 battery, methods to improve safety performance of cylindrical Li-MnO2 battery are summarized in this article.