Type-Cisforbothoutputandinput. WhentheACoutputisturnedon it ‘snormaltohearaslightnoisefromthebattery. Becausetheinternalfanisworkingtocooldownthebattery. Don’tshakewhenusingACoutletforcharging.

AC Outlet Portable Laptop Power Bank Universal 116Wh/31200mAh 100W Travel Laptop Charger External Battery Pack for MacBook Acer HP Samsung
$59.05