Toshitaka Takei

Equipment and method for transmitting electric power

Battery device and electronic equipment employing the battery device as power source

Battery pack with temperature detecting element and battery charger therefor

Battery cartridge having a recess for detecting misuse and/or recessed terminals

Charging apparatus, secondary battery apparatus, charging system, and charging method

Charging control method and charging control device

Cell evaluating method and cell evaluating apparatus

Battery charger and battery charging method

Charger system switchably connects a smoothing capacitor and resistor and charging controller based on a detected secondary battery voltage

Charger system, charging method and secondary battery system