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Writer's pictureAlison Duff

Fitbit FB421 Replacement Battery for Fitbit Charge 5 FB421 Activity Tracker

Fitbit FB421 Battery is replacement battery for Fitbit Charge 5 FB421 Activity Tracker. The Fitbit FB421 batteries equivalent is guaranteed to meet or exceed original specifications. All Fitbit FB421 Battery are brand new, 1 year Warranty, 100% Guarantee Quality and Fully Test!

Product Specifications:


Brand: Fitbit Replacement Battery


Capacity:65mAh


Voltage:3.87V


Type:Li-ion


* Longer run-time and battery life - thanks to modern Lithium technology without memory effect


* Guaranteed safety: Protected against Short-circuits, Overheating and Overvoltage


* 100% compatible in replacing your original battery



Replaces these part numbers:


FB421



Compatible with the following models:


Fitbit Charge 5 FB421 Activity Tracker



Other Online Stores:


U.K ---------------------Fitbit FB421 battery


Poland ---------------------Alternatywna bateria do Fitbit FB421


Spain ---------------------Baterías Fitbit FB421


France ---------------------Fitbit FB421 Batteries


Italy ---------------------Fitbit FB421 Batteria


Germany ---------------------Fitbit FB421 Batterie


Japan ---------------------Fitbit FB421 互換用バッテリー


Netherlands ---------------------Fitbit FB421 Batterij




Features of our replacement battery:


1. Each Fitbit FB421 replacement battery unit is made of high-quality lithium-ion cells for longer last time.


2. The battery is up to standard and fully compatible with original specifications.


3. All our batteries are certified by CE, UL, ROHS, ISO9001/9002 as safe products.


4. The interface metal and fixed insulator of the battery are made of good materials to ensure stable current input and durability.


5. We specialize in providing high-quality replacement batteries.



How to choose correct Fitbit FB421 battery?


+ This page list all type rechargerable battery for FB421, make sure this battery's picture is most the same as your original FB421 battery.


+ FB421 battery have genuine battery cells and original battery protection board, which means more charge cycle times and excellent compatibility.


+ Replacement rechargerable Fitbit FB421 battery is a very good choose too, beacuse you don't need to maintain it carefully, it is in stock all the time, you can repalce it with lower price any time.


+ Please contact us when you can't sure this is a correct Fitbit FB421 battery.



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