Abstract: The invention discloses a handy battery charger comprising a body including upper and lower hollow cases that assemble together to form a receptacle for dry cells, said upper and lower cases having an opening at one end; a first connector with a plurality of connecting pins mounted on the opening, configured to be selectively connected to a second connector disposed at the bottom portion of a cellular phone to supply the output voltage from the dry cells to the cellular phone; a couple of resilient binding clips arranged at opposite ends of the first connector to prevent accidental release of the first connector from the second connector, wherein each of the resilient binding clips includes a hook at an upper end and a pivot axle part at a lower end, the hook having a protrusion extending in a direction to engage the second connector, said pivot axle part being bent in a direction perpendicular to the protrusion of the hook and disposed within a pivot groove formed in the body; and a plurality of positive and