A battery charger for charging a portable electronic equipment, including a peripheral wall interconnecting a first base surface and a second base surface, an engagement portion protruding from the first base surface and extending in an axial direction to define an end surface a battery charging terminal protruding axially from the end surface, and a pair of self-engaging latches which is under a resilient bias to protrude laterally outwards and away from an engagement portion peripheral wall. The engagement portion has a lateral profile for insertion into a correspondingly battery charger receptacle along the axial direction. The latches are shaped dimensioned and positioned to retract inwardly towards the battery charging terminal upon encountering the battery charger receptacle until reaching a latching portion on the battery charger receptacle whereat the latches are to enter into releasable latched engagement with the latching portion.