The motor of electric vehicle rotates and stops,mainly due to:

Low battery power:charge the battery;Poor contact of battery contact:adjust the contact position or polish the contact;Poor contact between the fuse tube in the battery box and the fuse seat:adjust or replace it to make it good;Dirt is found in the photoreceptor tube of the speed regulating handle:clean or replace the photoreceptor,wipe the photoreceptor tube,and still cannot remove the fault:replace the speed regulating handle;Failure in the controller:replace or renovate the controller;The lead of the speed regulating handle seems to be broken:replace or repair the lead;The brake power off switch fails:adjust or replace the brake power off switch;Poor contact of the power lock after ablation:replace or repair the power lock;Clear virtual connection of internal plug-in:plug it again to ensure good contact;False welding and connection of carbon brushes,wires and windings in the motor:repair or replace the motor.