BATTERY CHARGER

Japanese Patent JP2004180370

A

To implement a function of displaying how long a charger takes to complete charging when charging is started.

The charger has a controlling means which controls charging of a battery pack 2 wherein a plurality of battery cells are connected in series and displays the state of charging by a detected state of charging. The charger comprises a charging current setting means 7 which sets a charging current for charging the battery pack, a charging current controlling means 60 which controls the charging current to a predetermined value based on the output of the charging current setting means 7, and a displaying means 90 which displays the charging time it will take charging to be completed in several steps. When the setting of the charging current setting means 7 is changed to increase or decrease the charging current during charging, the time before the completion of charging displayed on the displaying means 90 is increased or decreased by one step.

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ARADATE TAKAHISA
TAKANO NOBUHIRO
NAKAYAMA EIJI
MIZOGUCHI TOSHIO
FUNABASHI KAZUHIKO

JP2002340997A

June 24, 2004

November 25, 2002

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HITACHI KOKI KK

G01R31/36; H01M10/48; H02J7/00; H02J7/02; (IPC1-7): H02J7/02; G01R31/36; H01M10/48; H02J7/00

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