An electric work vehicle comprising: a vehicle body capable of traveling; a carrier in which a battery can be stored and a support portion is provided; a carrier storage portion provided in the vehicle body and capable of holding the carrier; a guide portion (21, 22) that is capable of supporting, via the support portion, the carrier operated so as to be lifted from the ground, in a state in which the carrier is lifted from the ground, and guiding the carrier from an outer side of the vehicle body toward the carrier storage portion, and that guides the carrier from the carrier storage portion toward the outer side of the vehicle body so as to allow a state in which the carrier is removed from the vehicle body and placed on the ground; a positioning portion configured to, when the carrier placed on the ground is operated so as to be lifted and the support portion has reached a position at which the support portion can be supported by the guide portion (21, 22), stop the operation of lifting the carrier so as to allow transition to a state in which the support portion is supported by the guide portion (21, 22), wherein the guide portion is a guide rail (21,22) that is provided extending from the carrier storage portion toward an outer side of the vehicle body, and that has an entrance portion provided at outer end portion of the vehicle body, characterized in that the support portion is a support roller configured to be supported by the guide rail (21,22) in the entrance portion, to be separated from the guide rail in the entrance portion, and to be movable along the guide rail, and the positioning portion is configured to, when the carrier placed on the ground is operated so as to be lifted, and the support roller has reached the entrance portion, stop the operation of lifting the carrier so as to allow transition to a state in which the support roller is supported by the guide rail (21,22) from the entrance portion. a vehicle body capable of traveling; a carrier in which a battery can be stored and a support portion is provided; a carrier storage portion provided in the vehicle body and capable of holding the carrier; a guide portion (21, 22) that is capable of supporting, via the support portion, the carrier operated so as to be lifted from the ground, in a state in which the carrier is lifted from the ground, and guiding the carrier from an outer side of the vehicle body toward the carrier storage portion, and that guides the carrier from the carrier storage portion toward the outer side of the vehicle body so as to allow a state in which the carrier is removed from the vehicle body and placed on the ground; a positioning portion configured to, when the carrier placed on the ground is operated so as to be lifted and the support portion has reached a position at which the support portion can be supported by the guide portion (21, 22), stop the operation of lifting the carrier so as to allow transition to a state in which the support portion is supported by the guide portion (21, 22), wherein the guide portion is a guide rail (21,22) that is provided extending from the carrier storage portion toward an outer side of the vehicle body, and that has an entrance portion provided at outer end portion of the vehicle body, characterized in that the support portion is a support roller configured to be supported by the guide rail (21,22) in the entrance portion, to be separated from the guide rail in the entrance portion, and to be movable along the guide rail, and the positioning portion is configured to, when the carrier placed on the ground is operated so as to be lifted, and the support roller has reached the entrance portion, stop the operation of lifting the carrier so as to allow transition to a state in which the support roller is supported by the guide rail (21,22) from the entrance portion.