1954 Gerald Pearson, Calvin Fuller and Daryl Chapin developed solar cells.
1956 Energizer. Manufactured the first 9-volt battery
1956 Construction of a nickel-cadmium battery factory (FY Equipment Factory (755 Factory))
1960 Union Carbide. Commercial production of alkaline batteries, alkaline batteries China began research (Xi'an Qinghua factory three cooperative R & D)
Maintenance-free lead-acid batteries after 1970.
1970 primary lithium batteries practical.
1976 Philips Research scientists invented the nickel-metal hydride batteries.
1980 to develop a stable alloys for nickel-hydrogen batteries.
In 1983 China began to study Ni-MH battery (Nankai University)
1987 Our improved nickel-cadmium battery technology, using foamed nickel, 40% of the battery capacity upgrade
1987 years of commercial production of primary lithium batteries
1989 Study on the nickel-metal hydride battery included in the national plan
Angle (chewing gum) batteries appear before 1990
Around 1990 commercial production of nickel-metal hydride batteries.