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
120mAh LSSP321830AE Battery for Fitbit Blaze Smart Fitness Watch FB502
Fitbit Blaze In-Depth Review | DC Rainmaker
Solved: Blaze battery draining fast - Page 2 - Fitbit Community