10PCS/Lot "0" Cycle 167mAh Battery For Fitbit Blaze Heart Rate Monitoring Smart Sport Watch Batterie Accumulator AKKU - AliExpress
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 battery draining fast - Fitbit Community