The rental fee is $3 an first hour or $10 a day (24h). A temporary hold of $5 will be placed at rent start. $25 will be charged for failure to return on the go charger. For FULL charge charger kept more than five (1) day, it will be deemed as overdue, you will be charged fee $25 and it is yours to keep. The power bank can be charged with a computer, or a standard Micro USB cable plugged into a power outlet.