I bought my Fitbit Blaze (remember those?) in 2016. Battery is on its last legs. I will be heartbroken when it's time to retire this bad boy. : r/ fitbit
Solved: Blaze not holding a charge - Fitbit Community
How to replace the battery on a Fitbit Blaze (fixes overheating issue) - YouTube
Amazon.com: Synergy Digital Smartwatch Battery, Compatible with Fitbit Blaze Smartwatch, (Li-Pol, 3.7V, 120mAh) Ultra High Capacity, Replacement for Fitbit LSSP321830 Battery : Cell Phones & Accessories
Blaze not holding charge - Fitbit Community
Blaze not holding charge - Fitbit Community
Battery issues? Or is the battery icon inaccurate? - Fitbit Community
Fitbit Blaze Battery Replacement Bad Battery - YouTube