Polyend Tracker can be powered by an AC adapter or a decent power bank that can provide 5V 1A. Depending on the workload, a basic 20K mAh power bank will let Polyend Tracker go on for long hours or even days.
Important: The Simpler the power bank, the better. Please notice that “intelligent” power bank with advanced power management systems or even a “smart” computer USB out used for powering can cause issues and unstable Tracker. The best method to power up your Play unit is to use the original AC adapter.