This 3.7V 1800mAh Li-Polymer battery is a compatible replacement for Fiio X1 ii. Compare the number printed on your current battery, its voltage, chemistry, dimensions and connector before ordering.
Included: One replacement battery pack.
Battery specifications
| Voltage | 3.7V |
| Capacity | 1800mAh |
| Chemistry | Li-Polymer |
| Energy | 6.66Wh |
| Dimensions | 80.10 x 46.50 x 4.30mm |
| Battery weight | 34.2g /1.21 oz |
Replacing your Fiio X1 ii battery
Compare the connector shape, wire arrangement and polarity with your original battery. Check all listed specifications; a similar model name or matching voltage alone does not confirm a fit.
Compatible equipment models
Fiio X1 ii, FX1221
Replacement battery numbers
Fiio AEC404677