At the moment I'm not using mine very much and had low battery come on a week or so ago. I have started to put on trickle charge at different times to keep it topped up but wanted something to keep an eye on the battery condition if it was left unconnnected so I don't allow it to go dead! Another FF owner mentioned a small Bluetooth battery monitor that sounded ideal, ordered received and now fitted. Gives info on battery level, does a cranking test and charging test so should provide useful data. Pictures show it fitted and screenshot of current level. Will see how it drops over next day or so.

Click image to enlarge

Looks the business. Do you have a link, or details of the supplier?

This is the ebay code, there are a few on offer but this one was the best price if I recall. eBay Item No. 143859070359. 2009 Range Rover Vogue 3.6TDV8, Bournville, Parchment/Navy
2005 Jaguar XJ350 3.0 V6 Sovereign, Jaguar Racing Green, Ivory
1997 TVR Chimaera 450, Formula Red, Grey

Superb. Many Thanks.

Well went for a run, about 15 miles. Then tried the tests with the monitor, all seemed ok but the idle charge rate comes up as low. How does this look, could there be an issue

Click image to enlarge

Click image to enlarge

Click image to enlarge

Guessing it's looking for 13.5v at idle, so I'd say no major problem as you're 99.9% of the way there. That's a pretty normal figure for idle charging voltage and will definitely be charging the battery 2011 Vogue SE Tdv8 FFRR

Your Monitor looks way better than my Cetek Monitor which is almost double in price
The Cetek app doesn't show all the charging levels like yours, in fact sometimes not showing anything at all.
I have a close look on it and may change the system.

Thanks Mike and ANSI, good to see charging rates are ok. For the money it seems quite a good bit of kit. I can check on battery without going outside too so I can see how it drops over the days it's not used which is a bonus! 2009 Range Rover Vogue 3.6TDV8, Bournville, Parchment/Navy
2005 Jaguar XJ350 3.0 V6 Sovereign, Jaguar Racing Green, Ivory
1997 TVR Chimaera 450, Formula Red, Grey

Just fitted one of these as well. Great little bit of kit!

Stuart, yes pleased with mine, makes monitoring easy to avoid any issues battery related! 2009 Range Rover Vogue 3.6TDV8, Bournville, Parchment/Navy
2005 Jaguar XJ350 3.0 V6 Sovereign, Jaguar Racing Green, Ivory
1997 TVR Chimaera 450, Formula Red, Grey

Most people don't worry about their batteries.. If it starts the vehicle, it's ok.

It's only those who fit battery monitors that then worry as they now have something to look at, they think every slight fluctuation is a problem and start to stress out and worry that something is wrong.

I see my theory is being backed up by the OP, who's already worried and posting questions in the technical section

I can't say for sure since I've only owned my RR for a few months now but I had heard that the electronics in these vehicles are very sensitive to voltage being even a bit low. While most vehicles will be fine on a battery that it just starting to die I thought that I had heard that when the battery is starting to die you can get some odd issues. Replacing the battery could solve them.

So by keeping a close eye on the battery condition you may be able to avoid these funny glitches.

Maybe others here can confirm or set me straight.

Thanks!
Larry. 2009 Range Rover L322 Autobiography
Bournville/Ivory
Save lives, give blood.

Well Mr Steptoe you indeed are entitled to your theories! I can assure you I am neither worried or stressed but was after a little advice on what's normal for these cars. There are a number of posts on how battery level/condition can affect these particular cars. I fitted the monitor purely so I can see if there was any issues and to endure mine will always start. My Jag XJ can go for weeks without a problem that appears not the case with the RR. If my post in the "Technical" section causes you concern or indeed stress then accept my apologies 🤣. 2009 Range Rover Vogue 3.6TDV8, Bournville, Parchment/Navy
2005 Jaguar XJ350 3.0 V6 Sovereign, Jaguar Racing Green, Ivory
1997 TVR Chimaera 450, Formula Red, Grey

After my recent need to replace the alternator I am a little paranoid as to whether my 6 month old battery has been affected by the old alternator. Therefore I have ordered one of these so I can hopefully allay my fears a little, especially as it is FBH time of year.
Hopefully it will arrive a little quicker than the temperature probe which we all tried to order a few years ago at a bargain price, which still hasn’t been delivered  2017 Jaguar F Pace 25t Portfolio - still part of the JLR family 😀
2009 3.6 V8 (MY2010) - my first ever diesel! - now also gone
2004 4.4 V8 Petrol Vogue - now gone

Recently had battery issues when my wife was using the car for work. She usually sits in it and it idles for a long time. Maybe theres an idle issue that doesn't sufficiently recharge the battery in these vehicles.