New, never used RAVPower 27000mAh portable battery pack. Description of details from original seller below! New-and-improved version: 3-prong AC output with a power supply on/ off switch indicator for any device up to 70W (to turn on the AC power, hold the power button for 8 seconds) Power up Three devices at once: benefit from one Type-C Output and two USB ismart ports to charge new Ultra books and two other devices simultaneously (Type-C port only supports output) Mega 27000mAh capacity: charges an iPhone 7 up to 7. 6 times, a Galaxy S8 up to 5 times, and a 12" Macbook up to 1. 4 times Recharge faster than ever: recharges itself fully in 5. 2 hours with the 24V/1a DC input and 8 LED indicators display the power level Industry-leading heat dissipation: built-in air vents with quiet fan keep it cool even when used to its maximum capacity