The Ford Focus MK4 comes with an EFB battery as standard, measuring 278 x 175 x 175 mm. For anyone who wants to install an AGM battery, there are instructions in the video below. AGM batteries are usually a bit larger at 278 x 175 x 190 mm, but this also fits without any problems.
https://www.batteriespezialist.de/Langzeit-AGM-Batterie-70Ah-12V
5% discount code: MFF5 (valid until the end of March 2025)
For anyone who has concerns about heat development or heat radiation, you can attach the following heat protection to the battery
