Disclosed is a contactless battery charger for simultaneously charging numerous portable terminals and battery packs, regardless of their type, when they are placed on the charger, as well as sterilizing and cleaning them. The charger includes a plate-shaped portion gradually depressed towards the center up to a predetermined depth so that a number of terminals and battery packs can be placed on the plate-shaped portion. The charger is adapted to simultaneously charge a number of battery packs in a contactless mode.

 
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< Contact-less power transfer

> Method and apparatus for measuring the voltage of a power source

> Status detector for power supply, power supply, and initial characteristic extracting device for use with power supply

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