Ford fiesta 1.0 ecoboost thermostat replacement & Battery in the way

[Kenway]

Hi there 

Before I start work on the car

I got to replace the wife car thermostat but have to remove the battery to get better access to the housing unit, is they a way to stop the alarm from going off (if it does on a ford, does on a VW)  / loss codes etc before I start, or would I need to get myself a battery charger and connect to the cables 

Thanks 

 

[unofix]

The alarm won't go off.

You might have to reset the 'one touch' electric windows (if you have them).

Disconnect the negative lead first.

[MJNewton]

I changed my thermostat and don’t recall removing the battery? I might’ve just forgotten and am not with the car to jog my memory though.