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Cameron Sino Technology Limited  |  SKU: CS-FEX110SL  |  Barcode: 4894128147046

Li-Polymer Amplifier Battery For Fiio, Fx1221, X1 Ii, 3.7v, 1800mah - 6.66wh

⭐For further information about stock levels see the notes below⭐
Regular price $26.97 CAD

Cameron Sino CS-FEX110SL Replacement Battery for Fiio Amplifiers X1 ii and FX1221 – 1800mAh

Enhance the performance and longevity of your Fiio X1 ii and FX1221 amplifiers with the Cameron Sino CS-FEX110SL replacement battery. Designed with precision, this 1800mAh Li-Polymer battery delivers a robust 3.7V voltage and a power rating of 6.66Wh, providing reliable power for extended audio sessions. Whether you’re enjoying music at home or on the go, this high-quality battery ensures your device delivers consistent, uninterrupted sound.


Product Features

  • Capacity: 1800mAh
  • Type: Li-Polymer
  • Voltage: 3.7V
  • Rate: 6.66Wh
  • Color: Black
  • Dimensions: 80.10 x 46.50 x 4.30mm
  • EAN Code: 4894128147046
  • Net Weight: 34.2g / 1.21oz
  • Gross Weight: 84.2g / 2.97oz

Why Choose Cameron Sino Batteries?

Cameron Sino batteries are synonymous with quality and reliability. The CS-FEX110SL replacement battery is manufactured to the highest standards, ensuring your amplifier operates at peak performance for longer durations.

  • Extended Playtime: The 1800mAh capacity offers prolonged use, so you can enjoy your music without frequent interruptions.
  • Perfect Fit and Easy Installation: Designed specifically for the Fiio X1 ii and FX1221, ensuring seamless compatibility and hassle-free installation.
  • Reliable and Safe: Built using premium materials to prevent overheating, overcharging, and short-circuiting, guaranteeing safe and dependable operation.
  • Enhanced Durability: Manufactured with top-tier components for a long-lasting and reliable power solution.

Compatible Models

  • Fiio: X1 ii, FX1221

Part Numbers

  • Fiio: AEC404677

30-Day Return & 1-Year Warranty

Shop confidently with Cameron Sino’s comprehensive warranty and return policy:

  • 30-Day Return Policy: If the product does not meet your expectations, return it within 30 days for a full refund.
  • 1-Year Replacement Warranty: Enjoy peace of mind with a one-year warranty covering any manufacturing defects.

Benefits of Cameron Sino Batteries

With a commitment to quality and performance, Cameron Sino batteries deliver unmatched reliability and power. The CS-FEX110SL battery is rigorously tested and ISO 9001-certified, ensuring it meets or exceeds OEM standards.

  • Eco-Friendly Construction: Built using environmentally sustainable practices.
  • Trusted by Professionals: Used by OEMs and trusted by audiophiles for their superior performance and durability.

Power Your Amplifier with Confidence

Upgrade your Fiio X1 ii and FX1221 with the Cameron Sino CS-FEX110SL replacement battery for unparalleled performance and longevity. Enjoy the rich, uninterrupted sound your amplifier is capable of, backed by a battery that ensures reliable power whenever you need it.

Order your CS-FEX110SL replacement battery today and take your audio experience to the next level!


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🔋 What’s mAh All About?

mAh stands for milliamp hours—basically, how much "fuel" your battery can hold. A higher or lower mAh than your original battery? No worries! 🙌 It won’t affect charging or operation—just means your device might run a bit longer or shorter between charges. Still 100% compatible. Still 100% awesome. 💪✨

Before ordering please read

Ensure the original battery model number is mentioned in our product description and verify that your device model number is also listed in the description.

How to Look after your new lithium battery!!

See how to look after your battery if its lithium Lithium Care

Delivery and Shipping

See our shipping policy and details at this link Shipping Details

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Not sure which replacement battery you need? Just snap a Photo / Video of your current battery and send it our way! Our team will quickly identify the exact match and recommend the perfect replacement model — no guesswork, no hassle.

🔍 Fast, Expert Assistance

We’ve helped thousands of customers find the right battery — let us do the same for you. Whether it’s for an alarm system, emergency light, or industrial equipment, we’ve got you covered.

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