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Rectangular lithium-ion battery pack with silver label and connector cable

Cameron Sino Battery for Fiio FX1221 X1 ii 1800mAh

SKU CH-JW1V-MJZGN

Replacement lithium-ion battery rated at 1800mAh and 6.66Wh for Fiio FX1221 and X1 ii players

  • Battery pack size80.1 × 46.5 × 4.3
  • Battery capacity1,800 mAh
  • Details80.1 × 46.5 × 4.3
  • Direct replacement for Fiio FX1221 X1 ii
  • 1800 mAh capacity restores full runtime
  • 10 × 46.50 × 4.30 mm fits original bay
  • ISO9001, RoHS and CE certified for safety
  • New lithium-ion cell with decoded chip works like original

Replacement Battery for Fiio X1 ii

The Cameron Sino battery is a direct replacement for the Fiio FX1221 and X1 ii portable audio players. It uses a lithium-ion cell rated at 1800mAh and 6.66Wh to restore original runtime. The pack measures 80.10 x 46.50 x 4.30mm to fit the existing battery compartment.

Upgrade from depleted original cell

This unit replaces the factory battery when it no longer holds a useful charge after extended daily use. The jump is worth it when playback time drops noticeably or the device shuts down unexpectedly under load. A fresh cell restores the player to its intended portable endurance without hardware modification.

Fits Fiio player chassis directly

The battery slots into the Fiio X1 ii body using the original connector and mounting points, requiring no adapter cables or case alterations. It frees the user from tethered power-bank operation during long listening sessions. Installation follows the device's standard battery-access procedure.

How it compares

Measured against everything we stock in Household Batteries & Chargers, at today’s prices. Recalculated every night.

Price $14.99
Pricier than about 67% of the 10,440 comparable items (median $10.99).

Specifications

Product
Brand nameCameron Sino
Model nameFX1221, X1 ii
Part number1ABTSB-DUPS-168, BT4-YH001L
Power
Battery capacity1,800 mAh
In the box
Battery pack size80.1 × 46.5 × 4.3

Questions about this item

What are the exact dimensions of the battery so I can confirm it fits the Fiio FX1221 X1 ii?

The battery pack measures 80.10 x 46.50 x 4.30 mm, matching the original specifications for the Fiio FX1221 and X1 ii models.

Which step during installation is most often done incorrectly?

The connector must be properly seated into the device; a loose connection will prevent the battery from working even if it is physically inserted.

After how many full charge and discharge cycles will the new battery reach its best performance?

The battery achieves its best performance after 2 or 3 complete cycles of charge and discharge.

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