Thanks for all those replies. I'm happy enough putting the new one in but if anyone with am FL2 could comment on any steps required afterwards that would be useful. I will not leave the keys inside  FL2 TD4 GS 60 reg Facelift - so many issues
2019 DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental
Now greatly regret selling the Outlander. MPG of the FL2 is atrocious and so are the fuel bills. Fun though 😎
Couldn’t afford the fuel bills so back to an older Mitsubishi Outlander PHEV. Significantly better than I remembered it to be…

The 12v socket by the aux socket on the centre consul is always live. connecting a battery charger to the +ve terminal lead and the -ve to any earth will also keep all settings as you swap them over. If you don't need or use the stop/start then you don't need an AGM battery. my PC is slightly to the right of Genghis
2012 HSE SD4 In Orkney Grey now gone, best car ever.

Interesting. I don't mind setting things again as long as it can be done without any special kit, or any kit at all. FL2 TD4 GS 60 reg Facelift - so many issues
2019 DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental
Now greatly regret selling the Outlander. MPG of the FL2 is atrocious and so are the fuel bills. Fun though 😎
Couldn’t afford the fuel bills so back to an older Mitsubishi Outlander PHEV. Significantly better than I remembered it to be…

Procedure to reset windows is in the owner's handbook. The trip computer will reset itself to zero. I bought my last battery from Eurocarparts - they have a 5% off offer this week, code EXTRA5.
When I replaced the ordinary battery on my last car, I had to remove the breather pipe from the old battery, remove a small plug on the new one and push the pipe into the hole. I don't know if the AGR battery requires this.
Regarding the post above, I understand the charging parameters for AGR and lead-acid batteries are different. If you change type of battery you must get the charging system reprogrammed.
I have read on here somewhere that technically the change of AGR battery requires a reprogramming, BUT that if left it will reprogram itself over 24 hours. As I wrote above, there's lots of info on the forum if you do a bit of Searching. Ex AA Series III LWB Safari - Gone
300TDi Disco (bought new - terrible car) sent back after 18 months
Freelander 1 Estate - leased, given back at end of lease
200TDi Disco (bought from a mate with 100,000 on the clock) - Gone
Disco 2 TD5 - sold and exported to France
FR2 TD4 GS - Gone
FR2 SD4 HSE - Now changed for a DS
New model ex-demo Evoque S 180 in white
Unable to order a new DS, so gave up. Now have a Volvo S90 Recharge.

A previous poster (Stevie5tapes) wrote:

Yes, if replacing the battery you need an AGM battery. It needs to be 80 Ah. From memory I think the battery size code is 110. The battery are expensive compared to a normal lead acid battery but the AGM battery is designed for stop/start. I bought a Varta F21 and fitted it myself, cost me £135 from a local battery place and they price matched that from an online store. One thing to note, when searching online for batteries, when entering the car details many sites will show you 70 Ah batteries. These are no good, you need a 80 Ah with 800 CCA. Ex AA Series III LWB Safari - Gone
300TDi Disco (bought new - terrible car) sent back after 18 months
Freelander 1 Estate - leased, given back at end of lease
200TDi Disco (bought from a mate with 100,000 on the clock) - Gone
Disco 2 TD5 - sold and exported to France
FR2 TD4 GS - Gone
FR2 SD4 HSE - Now changed for a DS
New model ex-demo Evoque S 180 in white
Unable to order a new DS, so gave up. Now have a Volvo S90 Recharge.

Cut and paste from another website, helps understand why Stop Start requires different battery technology.


There are a few distinct advantages of an absorbed glass-mat battery versus a lead-acid battery:

An AGM battery has a lower internal resistance than a flooded lead-acid battery, which allows faster recharge.
The AGM battery doesn't produce nor expel hydrogen/oxygen gasses like the flooded lead-acid battery. Therefore, it doesn't have any electrolyte or water loss.
When comparing the same group size battery, AGM batteries allow additional plate surface area. More plate surface area = high ratings in cold cranking amps (CCA) and/or reserve capacity (RC).
AGM batteries do not exhibit terminal corrosion. No corrosion means less battery maintenance.


Not heard of it in light vehicle applications yet, but stop / start in heavy vehicles has introduced crank bearing replacement as a service item. This was on a fleet of Volvo hybrids that the company I worked for were running.

Our Disco has a AGM fitted as standard due to it being power hungry, apparantly if the Alternator fails, you will be lucky to drive for another 30 minutes, before it shuts down. p****d off with a Digital Keyboard Warrior

Sold on the AGM part. As long as the car can sort itself after I put the new battery in I'm sorted. FL2 TD4 GS 60 reg Facelift - so many issues
2019 DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental
Now greatly regret selling the Outlander. MPG of the FL2 is atrocious and so are the fuel bills. Fun though 😎
Couldn’t afford the fuel bills so back to an older Mitsubishi Outlander PHEV. Significantly better than I remembered it to be…

swap the battery out,( whilst leaving the door/windows open and key in your pocket ). reset everything that you can find that needs resetting (windows, stereo, roof, electric seats??) and take it from there.

If there is any stuff that requires a diagnostic tool to reset then any decent local indy should be able to sort it for no more than £50

Read this thread. It has all the info you will need. http://www.freel2.com/forum/topic21084.html Ex AA Series III LWB Safari - Gone
300TDi Disco (bought new - terrible car) sent back after 18 months
Freelander 1 Estate - leased, given back at end of lease
200TDi Disco (bought from a mate with 100,000 on the clock) - Gone
Disco 2 TD5 - sold and exported to France
FR2 TD4 GS - Gone
FR2 SD4 HSE - Now changed for a DS
New model ex-demo Evoque S 180 in white
Unable to order a new DS, so gave up. Now have a Volvo S90 Recharge.

I reconditioned my battery with my CTEK charger but it wasn't really any better. I ended up buying a new Varta F21, 80Ah, 800CCA AGM battery. I swapped the battery, took about 10 minutes in all and just had to reset the windows.

The battery cost me £135, the local battery garage to me matched a price I found on the net. The indy I use recommended a Exide battery but at the time I couldn't find these anywhere in stock. I was surprised with the indy I use as he wanted to charge £250 for battery and fitting. He said the computer needs resetting so there was battery + 1/2 hour labour. Anyway after reading a few posts on here I just swapped the battery and the stop/start started working pretty much straight away.

Heres a battery you might want to consider
http://www.justcarbatteries.co.uk/exide-ek...ttery.html

This is the one I bought
http://www.puredrivebatteries.co.uk/f21-va...tAodYkwATA

Ive not had an error/HDC error message since fitting the battery last December. Black MY2013 SD4 GS Auto, Wood Company Armrest, Freel2 sticker.
Gone MY2010 Freelander 2 Manual TD4.e S, Alaska White.

Hi Chucky! I do not think that Halfords HSB110 battery is suitable. But you can find the correct version
on ebay for about £135.00. If you do it yourself, you will need to go to your local gym first! The battery
weighs a ton!  2013 Dynamic Santorini black
2011 XS Lago grey
2007 HLS Stornoway grey
sometimes towing an Elldis AVANTE 574.

Yeah, I realised the Halford ones are under powered. The one linked on page 1 seems like a good bet so will probably order that.

Not concerned about the weight - I used to train with kettle bells. In saying that I did injure myself badly with one.. FL2 TD4 GS 60 reg Facelift - so many issues
2019 DS. Terribly unreliable.
Sold DS for a 2021 Mitsubishi Outlander PHEV. Fingers crossed....
Sold Outlander for a 2014 SD4 SE Tech because I’m mental
Now greatly regret selling the Outlander. MPG of the FL2 is atrocious and so are the fuel bills. Fun though 😎
Couldn’t afford the fuel bills so back to an older Mitsubishi Outlander PHEV. Significantly better than I remembered it to be…

In the old days you could revive a battery by giving it a good shake up then turn it upside down for all of the crud to run out (which shorts out the plates at the bottom of the cells) then refill with fresh acid. You ended up with a slightly lower Ampere Hour rating but it generally worked a treat. 3 x FL1 2 manual + 1 auto
5 x FL2 4 manual + 1 auto
Now Discovery Sport P250 MHEV SE