A multifunctional storage battery charger including a charging power source module, a single-chip microprocessor module, a display module, a keyboard input module, a switch socket drive control module, a temperature sensor module, a cell phone charging module, a nickel-cadmium nickel-metal hydride lithium ion battery charging module, a storage battery charging plug and a multifunctional storage battery charger housing. The single-chip microprocessor control module is connected with the charging power source module, the display module, the keyboard input module, the switch socket drive control module, the nickel-cadmium nickel-metal hydride lithium ion battery charging module and the temperature sensor module separately. The single-chip microprocessor control module controls the charging power source module to charge a storage battery through the storage battery charging plug. The multifunctional storage battery charger can be used for charging the storage battery and can also be used for charging a cell phone as well as a nickel-cadmium nickel-metal hydride lithium ion battery. The multifunctional storage battery charger can also serve as a timing switch socket to control an electric device requiring timing switching as well as a temperature control switch socket to control an electric device requiring temperature control switching.