A method for reusing a vehicle rechargeable battery to rebuild an assembled battery from a plurality of battery units having a usage history is provided. The method includes measuring a remaining charge of each of a plurality of battery units (11) obtained...

The present invention pertains to the detection of the state of charge of a battery, whereby the complex impedance in the diffusion region of the battery is used. An arithmetic device such as a computer determines the slope of the complex impedance at leas...

An alkaline storage cell comprises a positive electrode including a cobalt additive and nickel hydroxide particles that have been covered by a cobalt compound film layer, and a negative electrode including a hydrogen-absorbing alloy that contains nickel an...

This alkaline storage battery cathode is provided with: nickel hydroxide particles covered by a cobalt-compound coating layer; a zinc compound; and an yttrium compound and/or an ytterbium compound. The zinc compound and the yttrium compound and/or ytterbiu...