The gGO 650 mAh battery is covered under a complimentary 30-day warranty. This warranty covers manufacturer defect or failure for a period of 30 days from the date of purchase. Coverage includes replacement or repair of the product, which is determined by availability, or vendor, and the time of purchase. A replacement may be made within 30 days after purchase with the same product or like product when direct replacement is unavailable. Please see our Ganesh Cares page for information on warranty procedures and how to submit a claim.