Abstract: A universal charger for NiH and lithium batteries including: a housing with a first locating surface; and a slide set formed corresponding to the housing with a charging groove thereon for NiH batteries to be positioned in and having a second locating surface corresponding to and leaning against the first locating surface. The housing is provided with terminal pieces for adjusting the position. The terminal pieces may be moved by fingers from the bottom of the housing. As the second locating surface of the slide set contacts the first locating surface, a charging groove is formed on the surface for one to four NiH batteries to be charged, when the slide set is pushed outwards over a certain distance such that a charging space is created between the second locating surface and the first locating surface of the housing with the prearranged lithium batteries established for the charging purpose.

Abstract: A slim battery charger includes: a main charging body having a plug at the bottom end thereof; two charging grooves adapted to accommodate batteries, the charging grooves being disposed at the left and the right side of the main charging body; and a charging control circuit board having a front portion in contact with the plug via conducting spring strips for obtaining the AC current. The rear end of the charging control circuit board is electrically coupled to two first terminals. Contact surfaces of the first terminals are extended at the rear end of the left and the right charging groove. A second terminal with the telescopic and conducting function is disposed at an end opposite to each of the first terminals. The external end of the second terminals projects at the front end of the charging groove. In this way, the whole charger is smaller and thinner than a pack of cigarettes, thereby ensuring a convenient carrying.

Abstract: A dual purpose mini-charger includes: a main charging body having a USB-plug at the front end thereof, the USB-plug being connected to a USB-socket for obtaining the direct current for the charging purpose; two charging grooves adapted to accommodate batteries, the left and right charging grooves being disposed at both sides of the main charging body in an axial direction with respect to the USB-plug; and a charging control circuit board having a front portion adapted to fix a plurality of connecting pins in place such that an electric connection is created, the charging control circuit board further having a rear portion to which two pieces of first terminals are electrically coupled, the first terminals each having a contact piece fitted to an indentation at the bottom end of the left and right charging grooves, a second terminal with the telescopic and conducting function being disposed at an end opposite to the first terminals, the external end projecting at the front end of the charging groove.