How long before I have to charge my tracker again? Amazfit Updated January 10, 2017 21:15 Follow Once the Amazfit tracker is fully charged, it can last up to twenty days before having to charge it again. Related articles How do I charge my device? Can I connect the charger base with a USB power wall adapter? How do I change or modify my personal information and set my goal preferences? How long does it take to fully charge my tracker? What can the Amazfit Arc do? Comments 0 comments Article is closed for comments.