We are offering portable solar power bank 5000mah. Battery capacity:5000mah power bankbattery cell type:solar power bankcase materials:aluminiumn.w.:145gsize:142*75*13.6mmconversion rate:up to 85%-88%warranty:12 monthslogo:oemodm welcomedrated input:dc 5v, 1arated output:dc 5v, 1aself-charging time:5 hoursfully charging iphoneover 1.8 times ( iphone battery 1430mah)