a spare battery for electronics 1.output current:2A 2.Capacity: ... output port 4.Smart charging circuit design a spare battery for electronics1.output current:2A2.Capacity: 4.5ah3.Two USB ... °CCycle life:more than 200 cyclesI. Application: Micro-projector , Mobile phone, iphone / ipod / ipad , Tablet PC , DSC , DV, E ... (A & B port): it can charge two mobile phone at same time 3. Easy to charge SF1800R2 by ...