Female port takes male XLR charging connectors. Fits the following electric makes/models: -EVO 500, EVO 800, EVO 1000 -GT-750 -IZIP I-1000, IZIP I-600, IZIP I-750 (36 Volt) -Mongoose M750 -Razor MX500 Dirt Rocket, Razor MX650 Dirt Rocket, Razor EcoSmart Metro -Schwinn S1000 & ST1000 Stealth, Schwinn S600, Schwinn S750 (2006 & Newer) (36 Volt) -X-Treme X-600