Onsen Energy Shenzhen Co., Ltd is a professional manufacturer specializing in researching, developing, manufacture and selling batteries in Shenzhen ,china. It was set up in 2005.our main products including Li-polymer battery. LIFEPO4 BATTERY PACK Motor lifepo4 battery, car lifepo4 battery packs. these products are widely used in the industry of telecommunication, digital products, portable computers, electronic products, lightening devices, toys, GPS. medical Instrument, backup battery and emergency devices.We not only provide high quality product with excellent services, but also advanced battery solutions. Please feel free to contact us if any product is in your need.