A clamp for a male terminal having features for preventing incorrect clamping, which comprises a main body having a ring and two jaws, that are movable toward each other for the ring to hold the terminal. An engagement element is movable in the vertical direction and to act upon the jaws to move them toward each other. A clamping member, operable to move the engagement element comprises a stem and a nut. The stem is fixed to a base body, which is pivotable relative to the main body between a first position, in which the stem is inclined with respect to the vertical and a second position, in which the stem extends in the vertical direction. In the first position, the engagement element prevents the nut from engaging a threaded portion of the stem. In the second position, the threaded portion is adapted to be engaged by the nut.

The current sensor includes a battery terminal part that has electrical conductivity and is fastened to a battery post constituting a negative electrode of a battery, and a shunt resistor that is conductively connected to the battery terminal part via a joint part, the shunt resistor including a first detection terminal and a second detection terminal for detecting an electric current. The battery terminal part includes a third detection terminal for detecting a voltage of the battery between the joint part and the battery post. As a result, the current sensor can properly detect a voltage of the battery together with an electric current.

A cover includes a top wall, a first side wall, a second side wall facing the first side wall, and a lock releasing portion. The first side wall includes a locking portion engageable with a locked portion of a covered body. The second side wall includes an opposed locking portion engageable with an opposed locked portion of the covered body. The lock releasing portion includes: a release operation portion inclined and projecting from the top wall in a cover mounting direction; and a connecting portion connecting the release operation portion with the first side wall around the locking portion or the release operation portion with the locking portion.

A quick change battery clamp includes a first clamp body, a second clamp body, and a handle assembly. The second clamp body is coupled to the first clamp body. The handle assembly is selectively disposed through each of the first clamp body and the second clamp body. Each of the first clamp body and the second clamp body define an aperture having a substantially polygonal cross-section configured to receive a battery post. Each of the first clamp body and the second clamp body have an internal wall with a plurality of ridges configured to selectively abut the battery post. The first clamp body and the second clamp body are hingedly connected.

A battery terminal includes a terminal main body and a protector to be mounted to the terminal main body, wherein the terminal main body includes an operating section for clamping and tightening the battery post, and the protector includes a movable section provided with a contact section to be brought into contact with the upper surface of the battery main body, and a displacement section to be freely displaced between a covering position for covering the operating section and a retracted position with an external force applied on the contact section, wherein in the retracted position, the displacement section is retracted from the covering position, and wherein the displacement section is displaced to the retracted position by pressing the contact section against the upper surface of the battery main body so that the access to the operating section is allowed.

A battery connection device includes a base end connector, a battery end connector and a waterproof rubber ring. The base end connector includes a base end terminal module. The base end terminal module is mounted to the base end connector. The base end connector has a ring-shaped holding groove. The holding groove surrounds the base end terminal module. The battery end connector is docked with the base end connector. The battery end connector includes a base plate, and a battery end terminal module mounted on the base plate. The base end terminal module is docked with the battery end terminal module. The waterproof rubber ring is mounted between the base end connector and the battery end connector.

A connector includes a male connector, a female connector and a rotating clamping structure. The male connector includes a first housing with multiple channels, the female connector includes a second housing with at least one positioning slot. The rotating clamping structure includes a third housing, multiple first positioning pins, multiple stoppers and multiple second positioning pins. The rotating clamping structure can realize the locking or separation of the male connector and the female connector.

A battery connection apparatus for a vehicle including a cable terminal includes a terminal connection part provided in a tubular shape to be fitted to a circumference of a battery terminal protruding from a battery of the vehicle, the terminal connection part having an opening formed in a shape of being gradually widened between opposite ends thereof in a circumferential direction and male threads formed on an outer circumference thereof, and a fixing member provided to fix the battery terminal connection part in a state in which the battery terminal connection part is connected to the battery terminal, the fixing member having female threads, that correspond to the male threads, formed on an inner circumference thereof to be screwed to the outer circumference of the battery terminal connection part.

A battery post terminal assembly includes a conductive band and a clamp mechanism. The conductive band includes a first free end and a second free end. The conductive band defines an aperture for receiving a battery post of a battery. The clamp mechanism includes a wedge member that defines a recess between a first surface and a second surface thereof. The recess has an open end and a closed end that is narrower than the open end. The first surface is convex. The first free end and the second free end are positioned in the recess. The first free end is movable along the first surface toward the closed end to be moved by the first surface toward the second free end to tighten the conductive band around the battery post.

A connector apparatus for a battery includes: a connector block assembly mounted in a battery case of a battery assembly, and including first and second electrodes facing the interior of the battery case; and a header assembly releasably mounted to the connector block assembly, and including first and second terminals connected to the first and second electrodes, respectively. The header assembly is exposed to the exterior of the battery case and the first and second terminals are electrically connected to terminals of a mating connector, respectively.