ANVOW Rechargeable AAAA Batteries for Surface Pen Active Stylus, Ni-MH 1.2V 4...
Input DC 5V/200mA, Output DC 1.5V/200mA. ANVOW AAAA Ni-MH Batteries are perfect for a wide variety of household uses. Battery Size: AAAA. 2 x AAAA batteries. Versatile Power For Your Household Electronics.