... 1.input :19V/3A 2.Output :16V/3.5A 3.12V,16V,19V,24V selection Li polymer battery pack OW-16-C300 for 16V devices ... ,etc2. High capacity, portable, backup,universal, external ,convenient to carry.3. Various circuit function protections, to ensure the safety and stability ... kinds of low power alarm pattern:LED indication and buzzing Li polymer battery pack OW-16-C300 for 16V devices