Brand New (Not original) - This 3.7V Battery for Fly DS100 DS115 BL3204 + Pathusion Plastic Pry Tool contains advanced technical components and has been tested according to strict CE safety standards. It conforms to stable voltage regulation, ISO9001 and RoHS certifications. The 3.7V Battery for Fly DS100 DS115 BL3204 + Pathusion Plastic Pry Tool contains a chip that prevents over-charging, short-circuiting, over-current and over-discharge. In addition, the 3.7V Battery for Fly DS100 DS115 BL3204 + Pathusion Plastic Pry Tool is made from high quality premium cells, robust and durable. In order to get optimum performance out of this battery, we suggest 8 to 12 hours pre-charge before using it for the first time. Keep it away from too much moisture, too hot and too cold temperatures. We also recommened wiping the battery contacts regularly with dry cotton to get maximum performance.