Currie Tech's 4pin Off-board charging port is designed for the Ezip E1000 36 volt electric scooter. This adapter will take any Currie/Izip/Ezip battery pack and allow it to be charged outside your scooter or bike. The adapter will allow your charger to connect to the wireharness lead from the battery pack. Now you can charge one battery pack while you ride your scooter or bike with another. A must have for ALL serious riders.