A brand new and high quality. 5V2A DC Rechargeable Lithium ion battery, 6500mAh high capacity, small size and simple to carry. Automatically detect the current charging device model, not blindly output current, smarter and more humane. Reduce the power consumption of internal circuits and batteries during work, increase the conversion rate, and ensure more power output. Application: Smart 5V mini ups widely use for fingerprint attendance machine, fire safety system, security monitoring system, wireless camera, CCTV camera, personal treatment system, door security system, personal data assistant, emergency lighting, Alarm system, personal communication systems, radio, digital cameras, camcorders, video camera and more 5V devices. Using over-temperature and over-current protection technology to avoid potential safety hazards.