I have driven 2006 to 2009 an E-Max S. I have still the charger from this vehicle.
Now a friend has an electric scootger with also 4 lead batteries, but his charger is defect.
When I would know where is at the plug of the E-Max S charger plus and minus, I could give him my old charger.
To avoid miss understoods, best would be a photo from the plug and + - marked on the photo