Jorrocks wrote:

Further to my last post, has anyone managed / bothered to shoehorn an 020 battery into their 405? Same width and height as the standard 019, but 393mm rather than 353mm.

Mines older than yours, but I'd say that a 4cm longer battery would fit in there

Click image to enlarge

The spacer on mine is built into the tray that sits on top of the battery -

Click image to enlarge

The Exides are physically an exact match for the OE batteries for my MY and a very straight swap.

Both 10+ year old original batteries reading 12.7v - but I know I've been on borrowed time.

Thanks to Kev for the battery recommendation & Stan for the window reset procedure

Also to Kot for recommending the Autel code reader for another job - as it was also able to register the new batteries

Jorrocks wrote:

As I don’t have a Gap tool, if I replace my batteries myself will the car start so that I can drive to my Indy for the software bit to be done?

You don't "have to" inform the car it has a new battery... it will work fine without...

Just takes a little longer to sort itself out but rest assured it will, certainly don't waste money getting an indie to do it...  Pete
__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

General question on charging - I have charged cars for years but knowing how sensitive the RR can be and hearing about a second battery (or not) is it Ok to charge on the under bonnet posts or is it best practice to fit directly to the boot battery ? I have stopped doing short journeys as 'low battery' warning came on and also remembering to lock the car also helps prevent battery drain. I use the car every other week so I have a NOCO genius charger for when it is standing.
Any advice gratefully received .

I have charged from under the bonnet and direct to the main battery. I think it is the same.

But in the winter the charger is inside the car when I connect to the main battery. so there is an advantage there. SDV8 AB MY 2020
MINI Cooper S Cabrio
Kit: Jaguar XK140 (in progress - the website is link to build)

Mine was charged through the towing electrics socket using an adaptor bought from the forum shop (maybe no longer available, but can be got elsewhere) during the Covid lockdown and that worked fine and was convenient with no need to open bonnet etc. Only Range Rovers since 1988

Thanks for posting pictures of the replacement batteries Alistair which really helped me out. I bought the same ones and replaced them this morning. Very easy job to do and there was no need to reset the BMS. Only thing that needed doing was a reset of the clock and date.

Dont know if it makes any difference but, for others wanting to do change theirs, I did the one under spare tyre first.

Alistair wrote:

The Exides are physically an exact match for the OE batteries for my MY and a very straight swap.

Most likely need to change my auxiliary. Does anyone have any experience as to whether the following is really necessary?

Using suitable Land Rover diagnostic equipment calibrate the electric park brake, both tailgates. Check the clock and navigation settings 2018 P400e AB LWB

I didn't & they seem to work just fine.

Me neither

Superb! Thanks.

Now I just need to figure out how to get to it. The instructions on a previous page of the thread saying just yank the right hand side doesn’t seem to work 2018 P400e AB LWB

Yank harder! 💪🏻 “If it ain’t broke, don’t fix it” -where’s the fun in that?

Pull from the top only. The bottom is in a kind of rail.