Size adjustable battery charger

Claim 1

A size adjustable battery charger comprising: a rectangular casing having a charging circuit assembly supported above a bottom surface thereof, said charging circuit assembly having positive and negative output sockets, two grooved parallel rails longitudinally disposed on two opposite sides at the top of said casing, a fender transversely disposed relative to said parallel rails at one side of said casing and spaced from each of said parallel rails by a respective gap, a horizontal sliding frame for sliding in and out of said parallel rails and having a centrally disposed elongated slot therethrough, through which a hold-down screw is threadably engaged in said casing to hold said horizontal sliding frame in place; and a rack formed of a horizontal frame connected to a vertical frame and received in said casing, said vertical frame comprising a horizontal top plate supported above two opposite side posts and a slide which is vertically adjustable and connected between said side posts, two horizontal contacts movably fastened in an elongated through hole on said slide and respectively connected to said positive and negative output sockets for charging rechargeable batteries, said horizontal frame comprising two parallel end bars perpendicularly connected to said side posts at a lower elevation and joined by a cross bar, and two vertical contacts movably fastened in an elongated through hole on said cross bar and respectively connected to said positive and negative output sockets.