2018 Ford Focus SE battery corrosion? Is this normal? Is this bad? : r/FordFocus
Battery Replacement: 2012 Ford Focus SE 2.0L 4 Cyl. Sedan
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Ford Focus RS / ST Carbon Fiber Battery Cover by Cal Pony Cars
Battery hold down corrosion | Ford Focus ST Forum
Car died, replaced battery w/ AGM H7, FR auto window doesn't work, code p06b8 | Ford Focus ST Forum
Battery Relocation to Trunk + Big 3 Upgrade - build thread | Page 4 | Ford Focus ST Forum