The Ford EcoSport only recently came to the US, in 2017. It’s on the second generation of the car. The current key fob battery is the CR2450 (more on the CR 2450 here). It’s a larger fob and battery, but one that is very easy to replace.
| Model | Trims | Generation | Years | Key Fob Type | SubType | Rechargeable? Ease of change | Battery | Buy |
|---|---|---|---|---|---|---|---|---|
| EcoSport | 1.4 L TDCi Diesel, Duratec 2.0 L gasoline, 1.0 L EcoBoost, | 2nd | 2018, 2019 |  Easy Pull Out Valet Key | Smart Key | No | CR2450 | Check on Amazon |
Here’s my video on how to replace the EcoSport key fob battery:
This is the battery for this Ford EcoSport smart key fob:
Buy CR 2045 Replacement Battery on Amazon
The non-US models may have other key fobs, see my page on all Ford Key fobs to see which fob / remote battery you may have to replace.