All of our FITBIT FB521 Smart Watch Batteries. are made with high-quality original new Cells, they are designed to meet or exceed the OEM (original) specifications. FB521 Smart Watch Batteries of FITBIT for FITBIT battery are 100% brand new, 1 year Warranty, 30 days money back guarantee.
Battery condition: 100% Brand New
Battery model: FB521
Battery category: Smart Watch Batteries
Brand: FITBIT
Capacity: 162mAh/0.627WH
Voltage: 3.87V
Type: Li-ion
Color: White
Size: *mm(L x W x H)
Certification: Passed CE, UL, ROHS, ISO 9001/9002 and GS certification
Replace Part Number: FB521
Compatible Models:
For Fitbit Sense 2 / Versa4 Smartwatch
Guarantee: 100% safe shopping guarantee! 1 year warranty!
[AU] Battery for FB521
[US] Battery for FB521
[FR] Batterie pour FB521
[UK] Battery for FB521
[IE] Battery for FB521
[NL] Batterij voor FB521
[DE] Akkus für FB521
Quality Service for FITBIT FB521 Smart Watch Batteries:
We promise that the FITBIT FB521 Smart Watch Batteries sold in our website are 100% brand new - We never sell used or refurbished FB521 Smart Watch Batteries 100% new high quality Replacement battery Compatible your FITBIT Smart Watch Batteries. Provides excellent discharge characteristics. Quick delivery for every order.
How to care for the battery?
-If you do not use your laptop for extended periods of time (a week or more), remove the battery pack from the laptop.-Do not expose the battery to high heat or freezing temperatures. Do not leave your battery in your car in the summer. Hot batteries discharge very quickly, and cold ones can’t create as much power.-Completely drain and recharge the battery overnight once a month to maximize its capacity to hold a charge.-Fully charge new battery packs before use. New pack needs to be fully charged and discharged (cycled) a few times before it can condition to full capacity.-For laptops that work as Desktop Replacement, the battery should be re-installed every 3-4 weeks and allowed to fully discharge.-Leaving a battery in a laptop while using an electrical outlet for long periods of time will keep the battery in a constant state of charging up and that will reduce the life cycle of the battery.
Recommended Battery
Smart Watch Batteries Fitbit LSSP302228SE
Battery model: LSSP302228SE
Capacity: 1100mAh, Voltage: 3.8V
Suitable for the following products: Fitbit Ionic Smartwatch
Smart Watch Batteries FITBIT LSS271621
Battery model: LSS271621
Capacity: 71mAh/0.273Wh, Voltage: 3.85V
Suitable for the following products: Fitbit Charge3 FB409 Smart Watch
Smart Watch Batteries FITBIT SP281928SF
Battery model: SP281928SF
Capacity: 165mAh/0.63Wh, Voltage: 3.85V
Suitable for the following products: Fitbit versa 2
Smart Watch Batteries Fitbit FB503
Battery model: FB503
Capacity: 195mAh, Voltage: 3.8V
Suitable for the following products: Fitbit Ionic Smartwatch Ionic Battery
Smart Watch Batteries FITBIT FB511
Battery model: FB511
Capacity: 260mAh/1.001Wh, Voltage: 3.85V
Suitable for the following products: Fitbit Versa 3 (FB511) & SENSE (FB512) Watch
Smart Watch Batteries Fitbit SP271828SF
Battery model: SP271828SF
Capacity: 150mAh, Voltage: 3.85V
Suitable for the following products: Fitbit Versa FB504 FB505 Smart Watch
Smart Watch Batteries FITBIT LSS271620SF
Battery model: LSS271620SF
Capacity: 71mAh/0.273Wh, Voltage: 3.85V
Suitable for the following products: Fitbit Charge 4 FB417 Smart Watch
Smart Watch Batteries FITBIT LSSP411415
Battery model: LSSP411415
Capacity: 63mAh, Voltage: 3.7V
Suitable for the following products: Fitbit Charge 2 Fitness Watch FB407
Smart Watch Batteries FITBIT FB421
Battery model: FB421
Capacity: 65mAh/0.252Wh, Voltage: 3.87V
Suitable for the following products: Fitbit Charge 5 FB421 Activity Tracker
Smart Watch Batteries Fitbit LSSP321830AE
Battery model: LSSP321830AE
Capacity: 167mAh, Voltage: 3.7V
Suitable for the following products: Fitbit Blaze FB502 Smart Fitness Watch
