ChargeUp Reserve immediately charges your smartphone when you need it most. No reason to panic when your battery is about to die. The Reserve will charge your phone up to 7.7 times and can also charge two devices at the same time. Need a quick charge This power bank will fast charge the latest iPhone and Galaxy phones from 0-50% charge in just 30 mins.n7.7 phone chargesnEnjoy more screen time with the power to charge your phone up to 7.7 times based on iPhone 8. A LED battery indicator lets you know how much charging power is left before the power bank needs to be recharged.nnChargeUp Reserve immediately charges your smartphone when you need it most. No reason to panic when your battery is about to diennChargeUp Reserve immediately charges your smartphone when you need it most. No reason to panic when your battery is about to die. The Reserve will charge your phone up to 7.7 times and can also charge two devices at the same time. Need a quick charge This power bank will fas.