How long before I have to charge my tracker again? Amazfit Updated February 17, 2018 23:39 Follow Once the Amazfit tracker is fully charged, it can last up to twenty days before having to charge it again. Related articles How long does it take to fully charge my tracker? Can I connect the charger base with a USB power wall adapter? I'm still having trouble connecting to my device or updating the firmware. What do I do next? How do I charge my device? How do I properly care and clean my Arc device? Comments 0 comments Article is closed for comments.