How about application: Center Pin as Postive pole, the other 2 pin as the negative poles.
Application: Toy, Automotive, Instrument, Electronic Equippment, Battery Charge.
Spring Loaded Pogo Pin Connector
Pitch 2.54 mm; Through Holes PCB solder
Material: Nylon PA9T+metal
colour: black
Package Contents:
5/10/20 Pairs x Magnetic Pogo Pin Connector(5/10/20 males + 5/10/20 females)