Brand:DBK; Model:D28; Cell type: Li-polymer; Capacity Range (m Ah):2000-4500; Input Voltage (V):5; Output Voltage (V):5; Output Current (m A):1000; Dimensions (cm):6.5 x 6.4 x 1.7; Weight (kg):0.12; Capacity (m Ah):2800; Power Display:LED; Compatible With: Universal