Synergy Digital Smartwatch Battery, Works with FitBit Blaze Smartwatch, (Li-Pol, 3.7V, 120 mAh) Ultra Hi-Capacity, Compatible with FitBit Blaze Battery
Fitbit Blaze Battery Replacement Bad Battery - YouTube
NEW Battery For Fitbit Blaze,FB502;P/N:LSSP321830 (160mAh) Li-Polymer 3.7V 753070598983 | eBay
Synergy Digital Smartwatch Battery, Works with FitBit Blaze Smartwatch, (Li-Pol, 3.7V, 120 mAh) Ultra Hi-Capacity, Compatible with FitBit Blaze Battery