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Cam-Tech-Craig



Member Since: 03 Aug 2011
Location: Gloucestershire
Posts: 16146

England 2015 Range Rover SVAutobiography SDV8 Loire Blue
L405 Battery Sensitivity, Beware Of Fitting Wrong Battery!

So, last week i was messing around with the rear battery panel out of my 405.

Whilst it was open i looked at the supplementary battery and noted i had the "next size battery up" on the side in my workshop. It was a JLR Battery made for a Jag XE? XF? It was an inch longer than my original and was a 800ah rather than the 750ah and obviously an AGM so i thought "that might be a good upgrade" Thumbs Up

NO! ten mins after fitting the dash was bonging up LOW BATTERY PLEASE START ENGINE and even after driving the car for 45mins the same bong of doom when turning off the engine...

Incidentally, when starting the car, the dash would flicker for longer than usual! So all together the car was unhappy with my upgrade! I left it on the Ctek overnight and in the morning was the same... Doooooh! Banging Head So i changed it back to my original and all reverted to normal Embarassed

I bench charged both my original and the larger battery after removal and off the car they both charged fully within a couple of hours... So both batteries are fine, it was the car that didn't like them!

Im only telling members here so they don't make the same or a similar mistake... Neutral Im guessing fitting a cheaply made after market battery may have similar effects?

Post #500716 5th Jan 2019 11:37pm
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Alistair



Member Since: 11 Feb 2011
Location: Peterborough / Bordeaux / Andorra
Posts: 7724

United Kingdom 2013 Range Rover Vogue SE SDV8 Santorini Black

Shocked Wow - thanks for the heads up

I'm always attracted to those kind of slight upgrades and would almost certainly have made that sort of mistake when it comes to needing a new battery

Post #500733 6th Jan 2019 9:20am
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Charles89



Member Since: 11 Nov 2018
Location: Leicester
Posts: 268

United Kingdom 2014 Range Rover SVAutobiography SDV8 Scotia Grey

That is interesting, because I did the same mod. Removed the metal bracket to fit it, and I have no issue at all. I fitted a 900amp 100ah battery and it's fine. No issues at all. Are you sure something else is not causing a drain?

Post #500737 6th Jan 2019 10:16am
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nicedayforit



Member Since: 11 Jun 2011
Location: Beside the Solway
Posts: 3951

England 2004 Range Rover Vogue Td6 Giverny Green

^ +1 There is no way installing a battery with a capacity 50Ah greater than originally specified will make the slightest difference to the car.

Post #500738 6th Jan 2019 10:24am
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RR2008HSE



Member Since: 06 Jan 2013
Location: British Columbia
Posts: 2932

Canada 2008 Range Rover HSE 4.4 V8 Java Black

^ Agree. It shouldn’t make a difference. But maybe it does. Automobile magazine reported that their brand new Discovery 5 would throw up nasty error messages if they added generic, good quality Add blu instead of the (very expensive) JLR branded equivalent. Shouldn’t make a difference...

Post #500801 6th Jan 2019 9:58pm
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Cam-Tech-Craig



Member Since: 03 Aug 2011
Location: Gloucestershire
Posts: 16146

England 2015 Range Rover SVAutobiography SDV8 Loire Blue

Bit of an update on this... Had LR Assist out today as my car has been getting more and more "low battery" bongs! The car was not starting after 3-4 days of inactivity... Both batteries were changed in July and it would appear the one under the spare wheel had failed! So, we put LR Assist on it today and the "battery management system" had faulted and was causing these issues! LR Assist guy ripped out the software and downloaded new and all seems to be well now... Rolling Eyes Whistle

Was this the result of me messing with the Aux Battery??? Don't know and i won't be messing any further!

Just thought you'd all appreciate the outcome... Thumbs Up

Post #502758 25th Jan 2019 1:33pm
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Fleagle_UK



Member Since: 20 Mar 2013
Location: Cheshire
Posts: 409

United Kingdom 2014 Range Rover Autobiography SDV8 Luxor

wow. An LR assist guy that knew what to do ( was he actually LR? I thought they had subcontracted all of them to the AA now.)..... Apologies for my cynicism but my experience with them is not good. The last AA guy that came out to me as good as admitted he knew practically nothing about LR's.

Glad it's sorted though! Thumbs Up

Post #502765 25th Jan 2019 3:41pm
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Mikey



Member Since: 10 Jan 2008
Location: Dundee
Posts: 1684

Scotland 

While perusing the CCF files, there are different options for the power of the main and Aux batteries.

I wonder if it would have been fine with the corresponding option enabled within the CCF? Question

Post #502785 25th Jan 2019 7:00pm
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dexion7



Member Since: 06 Jun 2013
Location: Tynemouth
Posts: 291

2010 Range Rover Vogue SE TDV8 Alaska White

is a supplementary battery standard on l405?

Post #502787 25th Jan 2019 7:09pm
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Cam-Tech-Craig



Member Since: 03 Aug 2011
Location: Gloucestershire
Posts: 16146

England 2015 Range Rover SVAutobiography SDV8 Loire Blue

Bloody cars!!! Been out for a 30min drive early this evening and when i turned the car off...... Yep you guessed it BONG LOW BATTERY START ENGINE!!! Grrrrr Banging Head Thud

Post #502799 25th Jan 2019 9:23pm
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brian1951



Member Since: 07 Nov 2015
Location: Salop
Posts: 275

2012 Range Rover Westminster 4.4 V8 Orkney Grey

Buy yourself a L322 Rolling with laughter

Post #502804 25th Jan 2019 9:36pm
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Balloonengineer



Member Since: 03 Sep 2017
Location: Kent
Posts: 171

United Kingdom 2012 Range Rover Vogue 4.4 V8 Orkney Grey

The battery capacity is the battery manufacturers minimum test when they come off the production line.
I am sure batteries are graded on the tests, and lower/different figure ones are sold off with different branding.

I just had a 900ah one tested and it came up with 960ah, so maybe fitting a used one might not have the capacity written on the tin, and with second hand ones, the capacity could be anything.

On the running costs of a RR, batteries are really quite a low outlay. Modern batteries just don't last, and buying a new one every 2 or 3 years
Tayna are doing Powerline 105Ah 895A £80.45 or a Lucas 110Ah 920A £96.99, That's £30 a year or so. Less with some scrap or ebay the old one.

Best wishes
Glen Previously......
Series 1 80, Series 3 88, Turbo 90, 300tdi 90, 110's with 200, 300, TD5
TD5 Disco, Disco 3, 200Tdi Disco - probably the best vehicle Landrover ever made,
Now 3x FFRR, some would say I should have learned by now......

Post #502832 26th Jan 2019 10:15am
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charlie croker mk2



Member Since: 21 Jun 2017
Location: Yorkshire
Posts: 174

England 

If you replace ether of the batteries do you have to "code" the car in the same way that you would have to say on a BMW .

Post #504097 5th Feb 2019 11:35pm
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Mikey



Member Since: 10 Jan 2008
Location: Dundee
Posts: 1684

Scotland 

There is a BMS reset when either of the batteries are replaced, which I'm sure Craig knows about

Post #504195 6th Feb 2019 9:26pm
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charlie croker mk2



Member Since: 21 Jun 2017
Location: Yorkshire
Posts: 174

England 

I was thinking of changing both batteries as a precaution , is there a way of re setting the BMS without going to a main oil changer as its 6 weeks wait and even then its impossible to talk to a engineer -- just a receptionist who makes a note on a PC LOL

Post #504206 6th Feb 2019 10:00pm
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