The earliest versions equipped of the VARG MX 1.0 equipped with a Gen 1 Powertrain (recognizable with its black plastic inverter lid) feature a separate charging port. This charging port is only compatible with the VARG MX 1.0 Gen 1, not with the Gen 2, and not with the VARG EX and SM who feature an inverter-integrated charging port. The compatible charging port cap is SMX1-CB-CP-CAP-KT.