Don't Fords need a special battery, something to do with the alternator.

i did not know that. might as well give my ford dealer a call and ask. any suggesstions on reliable online retailers to buy them from ?

The Ford Focus must be fitted with a calcium-type battery. Fitting a traditional lead-type will upset the Ford charging system and cause all sorts of problems.

I replaced the battery on my Ford Mondeo with a Bosch, which I purchased from Euro Car Parts. Don't buy batteries in Halfords, by the way, because they charge and absolute fortune. The Bosch was OK but there were a couple of odd things which the car did afterwards that it didn't do before. It could have been just due to the fact that I had completely disconnected the battery for a little while, or it could have been connected with actually fitting a Bosch battery instead of a Ford one. Never found what the problem was before I got rid of the car.

If I needed a new battery for my present Mondeo then I think I'd buy a genuine Ford one. Even doing that would be cheaper than buying a battery in Halfords! Also, if I did have to change it, I would fit a considerably larger battery than the one that's fitted at the moment.

When I purchased this car a couple of years ago I was really surprised when I pulled the plastic cover off to reveal the battery. It's only a 43 AH which I personally consider very tiny! I would fit at least a 60 AH should I need to replace it. There's plenty of room on the battery tray to fit a much larger battery but this is something which obviously needs to be checked before purchase.

I suppose Fords are fitting smaller batteries now in order to save money during manufacture!

Edited by Galaxy on 27/04/2015 at 17:50

There is only 2 brands of battery that I would recommend, Varta and Exide.

I had a Fulmen (Exides heavy duty) battery on the car for 14 years before I changed it.

The Varta silver has been on the car since 2006 and gives an instant start (you don't hear any cranking at all).

Well, it says 6G9N-10655-LA - 12V - 65RC on the label on the Ford battery on my Mondeo, but it also says 43 AH 390A which are the Ampere/Hour and Cranking Current ratings. So, I would guess, it's the same battery.

However, as mentioned in my other post, if I ever had to replace my battery, then I personally would fit a much larger one (Capacity-wise).

The battery you have in your car is shown here on the Ebay website:

www.ebay.co.uk/itm/Ford-Car-Battery-12v-43Ah-390a-...a

And, no, you don't have to buy one from Germany, they will be avaiable in this country from your local Ford Main Dealer! Should you wish to replace your existing battery with a larger one then I'm sure they'll have those too.