Warranty Electric Bicycle Conversion Kit Manufacturer's Warranty 90-Day Limited Warranty – Motor only For 90 days from the date of purchase, Wilderness Energy Research Systems will repair or replace, at our option, to the original purchaser, free of charge, any Hub Motor found upon examination by an authorized representative of Wilderness Energy Research Systems to be defective in material and/or workmanship. - 30-Day Limited Warranty For 30 days from the date of purchase, Wilderness Energy Research Systems will repair or replace, at our option, to the original purchaser, free of charge, any Controller, Throttle, Bike Rack or Battery Bag found upon examination by an authorized representative of Wilderness Energy Research Systems to be defective in material and/or workmanship. - 30-Day Limited Warranty – Batteries For 30 days from the date of purchase, Wilderness Energy Research Systems will repair or replace, at our option, to the original purchaser, free of charge, any Nickel Metal Hydride Battery Pack found upon examination by an authorized representative of Wilderness Energy Research Systems to be defective in material and/or workmanship. Lead Acid Batteries are fully tested and certified before shipping. However, they are not warranteed due to our inability to determine factory defects verses purchaser misuse.      All transportation costs and shipping damaged incurred while submitting parts for repair or replacement are the responsibility of the original purchaser.