... cell phones, smart phones (iPhone, Galaxy S etc.), PMP, MP3/4, PSP, digital cameras, iPod, iPhone, iPad and so on. Specifications: •Brand ... : COOLOOK·Model:PB-2000• Battery Cell: Li-ion batteries (4*18650)(not included)• Input: DC 5V, 500-2500mA• Output: DC ... feel free to contact me if any more information needed) 4*18650 Coolook PB-2000 Mobile Power Bank