Focus Rs mk1 battery

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22-04-2015, 11:45 AM

LefkadaRS

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Focus Rs mk1 battery

Hello I would like to know what type of battery does a focus rs mk1 fit? What size and voltage.I bought mine 4-5 months ago and the previous owner had a bigger battery in size(battery cap won't close) on the car.Went to a car electrician because my lights flicker a little at idle and told me to change the battery because the i have is not for the car.He checked the alternator and it was OK..Does anybody have any input?

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22-04-2015, 04:55 PM

RobedST24

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What year is it mate

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22-04-2015, 05:48 PM

LefkadaRS

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It's a 2003 Focus RS

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22-04-2015, 06:28 PM

RichieST

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Bosch S5 Calcium would be a pretty good shout.

Which ever one it is, make sure it is a silver calcium and not a lead acid as they do not work well with the smart charge system.