PTM (Power Teller Machine) provides rentable and portable power banks through its convenient rental stations. Use the app to scan the station’s QR code or just simply top your credit card to the card reader on the station and your power bank will pop out. Charge any device (iOS, USB-C and mini USB). Take the power bank with you and when you’re done charging, return the battery to the station. You’ll receive a receipt on the app or a visual receipt on the screen.