Sony Corporation

Shuichiro Maekawa

Masaki Hogari

A battery pack mounted to a predetermined apparatus to permit supply and output of power of a secondary battery cell between the battery pack and the apparatus, comprising: a plurality of field effect transistors for stopping charge or discharge current in response to a control signal; and a control circuit for controlling the charge or discharge current of the secondary battery cell by outputting control voltage for controlling the field effect transistors; wherein the control voltage is supplied to the respective gates of the plurality of field effect transistors through resistors of 10 &lsqb;k&OHgr;&rsqb; or more.

Growing community of inventors

Fukushima, Japan

Shuichiro Maekawa