DC charger receptacle. For Club Car electric 36-volt all years. For E-Z-GO electric prior to 1983. For Yamaha electric G14 & G16. 

OEM Cross references:

For 36V Club Car models (OEM# 4107)
For 36V Columbia/Harley-Davidson models (OEM# 66036-72)
For Pre-1983 36V EZGO models (OEM# 18548-G1)
For 36V Yamaha G14/G16 models (OEM# JN4-H6181-00)