Warranty for 3 years, the company can sign the contract (cash on delivery) product features simple maintenance, battery sealing, no need for regular replenishment or acid maintenance during the entire life cycle. The excellent performance of high strength compact assembly process, prevent the falling of the active material, increase acid design, improve the service life of the battery. The grid is made of special lead calcium multicomponent alloy. The impurities in the separator and electrolyte are strictly controlled, and the discharge is low. Optimization design of high quality clapboard, pole plate, pole column and bus bar.38Ah over battery warranty for three years (including 38Ah), three years of any non-human quality problems, our company free replacement of the same type of new battery storage, please rest assured that the majority of customers buy!Maintenance of a simple battery to achieve sealing, the whole life period without regular replenishment or maintenance of acid and other maintenance.