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Dave G



Member Since: 30 Jul 2020
Location: Dorset
Posts: 84

United Kingdom 2013 Range Rover Autobiography SDV8 Indus Silver
Secondary Battery

Can anyone tell me what the secondary battery behind the right hand rear trim panel is for?

I have a 2013 4.4 autobiography Without stop-start?

Thanks,

Dave.

Post #566496 7th Sep 2020 11:02am
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charlie croker mk2



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

England 

It powers the ecu and some other electronics so that during a cold start the voltage to the electronics dosent dip and log false error codes . Some cars have motorcycle sized battery and others have a full size battery .

As in the cars service battery its a "AGM" type its cheap to replace if its the small type and needs no resetting of the battery management system .

Post #566497 7th Sep 2020 11:08am
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Dave G



Member Since: 30 Jul 2020
Location: Dorset
Posts: 84

United Kingdom 2013 Range Rover Autobiography SDV8 Indus Silver

Thanks Charlie Very Happy

Post #566499 7th Sep 2020 11:18am
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Dave G



Member Since: 30 Jul 2020
Location: Dorset
Posts: 84

United Kingdom 2013 Range Rover Autobiography SDV8 Indus Silver

Just connected a c-tsk led lead to it for monitoring purposes, it is about 2/3rds the size of the main battery🥴

Post #566519 7th Sep 2020 3:33pm
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charlie croker mk2



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

England 

This is the battery fitted .
https://www.amazon.co.uk/Exide-Ek151-Agm-C...amp;sr=8-1

Post #566522 7th Sep 2020 4:09pm
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