You did not say what the problem with your charger is but you might want to know that there is a current recall for the chargers.
http://www.segway.com/support/recall-information
Recall Date: May 5, 2017
Recall Number: 17-742
Segway Reannounces Recall of Off-Board Chargers for
Segway Personal Transporters Due to Shock Hazard (Recall
Alert)