High Quality 3.8V 195mAh FITBIT FB503 Battery For Fitbit Ionic Smartwatch Ionic Battery

Do you want to buy a cheap FITBIT FB503 Compatible battery? We offer you a cheap FITBIT FB503 Compatible battery - an incredibly high quality Compatible battery! All FITBIT FB503 are brand new,1 year Warranty, 100% Guarantee Quality and Fully Test!

✔ Battery for FB503 Ships to Singapore

Product Overview

This battery is suitable as a replacement battery for Fitbit Ionic Smartwatch Ionic Battery battery and FITBIT FB503 model.

High capacity FITBIT FB503 battery for longer standby time.

The battery is professionally tested to ensure the best lifespan.

1 year warranty, 30 days money back, 100% brand new!

Battery capacity (mAh/A/W) may be different; the more mAh/A/W it displays, the higher its autonomy.

Safety certified CE / FCC / RoHS.

Key Features

• High‑capacity design with 195mAh for extended device runtime.
• Stable 3.8V output ensures consistent performance during daily use.
• Built with high‑quality lithium‑ion cells for improved durability and long cycle life.
• Advanced protection system including overcharge, over‑discharge, overheat, and short‑circuit safeguards.
• Optimized for reliable performance in warm and humid environments.
• Lightweight and compact design for easy installation and device compatibility.

Technical Specifications

Model	FB503
Battery Condition	Brand New Replacement Battery
Item Code	ECN12335_Wat_Oth
Category	Smart Watch Batteries
Brand	FITBIT
Capacity	195mAh
Voltage	3.8V
Type	Li-Polymer
Color	Black
Applies to	Fitbit Ionic Smartwatch Ionic Battery
Certification	Passed CE, UL, ROHS, ISO 9001/9002 and GS certification
Service	Buy now, we promise a one-year warranty and 30-day returns

Compatible Models

Replacement Part Numbers:

• FB503

Compatible Models：

For Fitbit Ionic Smartwatch

* Please make sure that the replacement battery you are buying is suitable for your device brand and model.

Battery Care & Maintenance

• Store the battery in a cool, dry environment to maintain long‑term performance.
• Avoid exposing the battery to excessive heat or direct sunlight, especially in warm and humid climates.
• Use compatible FITBIT chargers or certified charging accessories to ensure safe and efficient charging.
• Avoid frequent full discharges; partial charge cycles help extend overall battery lifespan.
• If the battery will not be used for an extended period, keep it at around 40–60% charge before storage.
• Clean the battery contacts periodically with a dry cloth to maintain stable power delivery.
• Do not puncture, crush, or expose the battery to water or high humidity.

Frequently Asked Questions