This 3.87V 75mAh Li-Polymer battery is a compatible replacement for FitBit FB424. Compare the number printed on your current battery, its voltage, chemistry, dimensions and connector before ordering.
Included: One replacement battery pack.
Battery specifications
| Voltage | 3.87V |
| Capacity | 75mAh |
| Chemistry | Li-Polymer |
| Energy | 0.29Wh |
| Dimensions | 19.30 x 11.80 x 3.40mm |
| Battery weight | 2g /0.07 oz |
Replacing your FitBit FB424 battery
Compare the connector shape, wire arrangement and polarity with your original battery. Check all listed specifications; a similar model name or matching voltage alone does not confirm a fit.
Compatible equipment models
FitBit inspire 3
Replacement battery numbers
FitBit FB424