Shanghai JieShi Battery Backs Co,.Ltd. specializes in the battery pack's development ,design, produce and sales which mainly deals with the produce and sales of battery packs and chargers and the relevant produces.. Includes digital fere battery external digital battery packs, external notebook battery packs, lithium-ion/polymer batteries, smart chargers and related accessories for use with digital cameras, digital camcorders, intercoms and laptop computers. All of our products feature high quality and are compatible with Dell, Acer, HP, Konica, Kyocera, Nokia, Motorola, Sony, Canon, Nikon, Casio, JVC, NEC, Fuji, Panasonic, Siemens, IBM and Toshiba products.Operational features are : (1) Intellectualized battery design, development, production, mainly apply in areas of notebook batteries, digital camera batteries, instrumentation batteries, etc. Monitor battery capacity, application time, the frequency of use in real-time, the technology is now at a leading international level; (2) Smart external battery products, high-power, intelligent , ultra light and thin , without memory effect , multi-voltage to export; (3) The circuit protects the lithium battery. One, two, three and four bunch of protecting circuits. These circuit can be designed according to customer's request; (4) Chargers, the company has developed one, two , three and four bunch of lithium battery chargers and car-mounted chargers.