A backup power supply device (1) to be connected to a conduction path (P) from an external power supply (3) to an external load (4) including a plurality of secondary batteries (B1-B7) connected in parallel, a plurality of charging switches (SW1-SW7) that ...

An uninterruptible power supply (10) of the present invention is provided with a battery (11); a DC-DC converter circuit (12) for regulating the voltage of the power delivered by the battery (11); and a voltage control circuit (13) for controlling the DC-D...

A nonaqueous electrolytic secondary battery comprising an anode consisting of a carbon material, an electrolyte containing a lithium salt, and a cathode consisting of a material capable of occluding/releasing lithium metal or lithium, characterized in that...

An alkaline primary cell which is improved in reduction of self-discharge and cell capacity under storage at a high temperature, has a prolonged life and makes use of nickel oxyhydroxide is provided inexpensively. beta -Form nickel oxyhydroxide is containe...