... 2,18650 (Samsung) 3,Output voltage: DC5.5V 4,warranty:1 year portable charger/power bank for iPhone, ipad,travel ... Power bank/ mobile power ] features: Cel l type: polymer lithium-ion battery (BAK)Capacity: 9000mAhInput voltage: DC5.0 ~ 6.0VOutput voltage: DC5.5V ± 0 ... 800 timesAdvantage: 1) anti-friction and anti-flaming shell,high-gloss UV or matte process, electroplating, superior texture, stylish ...