We are an OEM/ODM manufacturer of rechargeable battery packs and specified chargers for portable eletronic devices in medical, testing, measurement, communication, military, security, etc. We use high quality battery cells supplied by Sanyo, Sony, Samsung, Panasonic, NEC to produce our battery packs. HY Energy has brought in advanced technology, automatic equipments and management experience from Japan. During this 10 years, we have been certified by CE, Rohs, ISO9001, UL, and become an outstanding manufacturer in the battery pack design and assembling. All our batteries are comfirmed to the UN38.3, MSDS requirement, 2009 IATA DGR and 2006-66-EC Battery Declaration.