EC5 Device Male & Female Bullet Connector for Lipo RC Battery ESC Motor Our connectors are constructed from the highest quality materials to ensure you get the best connection every time, whatever your application. Ideal for applications requiring up to 120 amps of current, this package includes two pairs of these popular connectors. Assembly Instructions Battery Connection: Female bullets inside the small (male) housing - the squared off housing is Positive. ESC/Charger Connection: Male bullets inside the larger (female) housing - the squared off housing is Positive.