Best Battery

[R222 USH]

Well, my battery went flat again after being on holiday two weeks. I've owned RS 3 years end of this month and still the same battery on as when I bought the car. I've charged many of times now so I would like to know the best battery to buy as decided to buy a new one. I'm 280ish bhp if this makes a difference.

CheaRS Paul

[Nick]

Standard Ford Calcium Battery is best, anything else won't work correctly with the Ford Smart Charge system.
Finis is 1672940. Its a 43AH 390A, doesn't matter what bhp you are running.

Found a good price on one on ebay via a Ford dealer:
http://www.ebay.co.uk/itm/GENUINE-FO...item257627776e

[R222 USH]

Just rang Ford just out ov interest Nick, with my registration theyve given me the same finis code battery as you :-) £82.84 incl vat

[Clayton]

If the car has stood for two weeks it is common that they do drain, has always been a problem with the Focus RS.


Can remember having a new battery on my last car under the Ford Warranty due to loosing charge.

[R222 USH]

My current battery ov 3 years Nick ( on wen bought RS ) is a Exide Excell 54Ah 520

[RSFDaveRSF]

I've got a Bosch S5 on mine and its awesome. Never ending power. Was only £62 delivered as well from discountcarparts.co.uk I think. Got Emma the same too as hers stands without trickle charge for long periods and hers has always started first time since i fitted it for her :)

[R222 USH]

Thanks Dave, will look into tha battery :-) whats the code, Ah etc?

[RSFDaveRSF]

Yeah the standard is the 063 but we have the 075 and still fits the tray. Also has more power. If you google search for a discount code you'll save another fiver ;)

[Nick]

Don't forget that extra weight of the bigger battery will reduce the power to weight by 0.02bhp per ton

[Andy Saints RS]

Best thing to do is take the battery out if the car is being stood for a while without being started. Thats what i do and it only takes less than 5 minutes to put it back in and re- connect it. The car starts every time i do this with no issues.

[RSFDaveRSF]

Best thing to do is take the battery out if the car is being stood for a while without being started. Thats what i do and it only takes less than 5 minutes to put it back in and re- connect it. The car starts every time i do this with no issues.

I take it you've removed the standard GT alarm? If you haven't you need to be carefull because its likely to ruin it sooner or later doing this.