Abstract: A battery module includes an insulating base, a pair of electrodes and multiple battery packs. Each electrode is installed to the insulating base and has a bridge portion and a wire connecting part exposed from the insulating base, and a pair of lugs is extended smoothly from each battery pack, and an end of at least a part of the lugs is attached to each bridge portion correspondingly. Therefore, the lug is not being twisted or deformed easily, and the battery module may have good conductive efficiency, long service life, and convenience of changing the battery pack.

Abstract: This disclosure provides a voltage variable battery cell module having two battery cell groups and an insulative seat. An output anode and an output cathode are embedded in the insulative seat. The battery cell groups are respectively electrically connected to the output anode and the output cathode, and the battery cell groups are connected in series.

Abstract: A battery module includes an insulating base, a pair of electrodes and multiple battery packs. Each electrode is installed to the insulating base and has a bridge portion and a wire connecting part exposed from the insulating base, and a pair of lugs is extended smoothly from each battery pack, and an end of at least a part of the lugs is attached to each bridge portion correspondingly. Therefore, the lug is not being twisted or deformed easily, and the battery module may have good conductive efficiency, long service life, and convenience of changing the battery pack.

Abstract: In an optical reading apparatus, a light source, a high frequency modulator IC and a first resistor are integrated in an optical pickup unit, wherein the light source emits a light beam onto the optical storage medium in order to read information from the optical storage medium, the high frequency modulator generates a high frequency modulating signal for adjusting the intensity of the light beam, and the first resistor has a first end coupled to ground and a second end couple to a first pin of the high frequency modulator IC. A voltage control module disposed outside the optical pickup unit and coupled to the first resistor in parallel is used for adjusting an output current of the first pin in response to a voltage change thereof, thereby adjusting the amplitude of the high frequency modulating signal.