Battery connectors that have a small size, are easily connected and disconnected during manufacturing and repair, are resistant to misconnection, and during connection, form electrical contact for one or both power pins before a signal pin. In one example, size may be reduced by providing a lid having a flat surface. Another example may provide a lid that extends beyond an edge of the socket in one or more directions to allow the lid to be pried with a finger during removal. Another example may provide a socket that is keyed using a negative space, which may mate with an open space in the lid. This mating may prevent the lid from being misconnected with the socket during manufacturing or repair. Another example may provide signal pins having a lower height than power and ground pins, such that power and ground connections are formed first when a battery is connected.