A battery exchange system comprising: a battery house located on an underside of an electric vehicle and accessible from the underside of the vehicle, said house including one or more latches (106A/B/C/D) that when engaged secure in the house a first battery comprising first and second contact rails (200a-b, 202a-b) extending a length of the first battery, the first and second contact rails of the first battery fitted to engage first and second front contact rods (204a/c) and first and second rear contact rods (204b/d) extending from the vehicle; a propelling mechanism to move the vehicle forward as the first battery is exchanged with a second battery; and an exchange plate comprising: a mount on the exchange plate for keeping the second battery in place on the exchange plate as the vehicle moves forward over the exchange plate and the second battery, the second battery comprising first and second contact rails extending a length of the second battery, the first and second contact rails of the second battery fitted to engage the first and second front and rear contact rods (204a/c and 204b/d; and at least one post associated with the exchange plate, the post fitted to disengage the one or more latches (106A/B/C/D) of the battery house as the vehicle moves over the post in order to drop down the first battery and the contact rods such that the first battery becomes located on the exchange plate and positioned horizontally next to the second battery so that as the vehicle moves forward over the exchange plate the front and rear contact rods (204a/c and 204b/d) move from engagement with the contact rails of the first battery to engagement with the contact rails of the second battery while providing electric charge to the vehicle through these engagements and the at least one post fitted to reengage the one or more latches (106A/B/C/D) of the battery house once the second battery is in place within the battery house. a battery house located on an underside of an electric vehicle and accessible from the underside of the vehicle, said house including one or more latches (106A/B/C/D) that when engaged secure in the house a first battery comprising first and second contact rails (200a-b, 202a-b) extending a length of the first battery, the first and second contact rails of the first battery fitted to engage first and second front contact rods (204a/c) and first and second rear contact rods (204b/d) extending from the vehicle; a propelling mechanism to move the vehicle forward as the first battery is exchanged with a second battery; and an exchange plate comprising: a mount on the exchange plate for keeping the second battery in place on the exchange plate as the vehicle moves forward over the exchange plate and the second battery, the second battery comprising first and second contact rails extending a length of the second battery, the first and second contact rails of the second battery fitted to engage the first and second front and rear contact rods (204a/c and 204b/d; and at least one post associated with the exchange plate, the post fitted to disengage the one or more latches (106A/B/C/D) of the battery house as the vehicle moves over the post in order to drop down the first battery and the contact rods such that the first battery becomes located on the exchange plate and positioned horizontally next to the second battery so that as the vehicle moves forward over the exchange plate the front and rear contact rods (204a/c and 204b/d) move from engagement with the contact rails of the first battery to engagement with the contact rails of the second battery while providing electric charge to the vehicle through these engagements and the at least one post fitted to reengage the one or more latches (106A/B/C/D) of the battery house once the second battery is in place within the battery house. a mount on the exchange plate for keeping the second battery in place on the exchange plate as the vehicle moves forward over the exchange plate and the second battery, the second battery comprising first and second contact rails extending a length of the second battery, the first and second contact rails of the second battery fitted to engage the first and second front and rear contact rods (204a/c and 204b/d; and at least one post associated with the exchange plate, the post fitted to disengage the one or more latches (106A/B/C/D) of the battery house as the vehicle moves over the post in order to drop down the first battery and the contact rods such that the first battery becomes located on the exchange plate and positioned horizontally next to the second battery so that as the vehicle moves forward over the exchange plate the front and rear contact rods (204a/c and 204b/d) move from engagement with the contact rails of the first battery to engagement with the contact rails of the second battery while providing electric charge to the vehicle through these engagements and the at least one post fitted to reengage the one or more latches (106A/B/C/D) of the battery house once the second battery is in place within the battery house.