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Retrofit of auxiliary battery

Calling all Grenadier owners in Scotland!

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Scotsitalian

Grenadier Owner
Local time
4:56 AM
Joined
Jul 14, 2023
Messages
76
Location
Aberdeenshire, Scotland, UK
for those interested, I just finished the install of the auxiliary battery and CTEK Smartpass 120S
Mine came as a cancelled order hybrid, Fieldmaster with off road package, locking diffs, h/ d wiring, winch but no auxiliary battery or CTEK Smartpass. Don’t ask me why that spec as to me makes no sense to have heavy duty wiring and winch but no auxiliary battery!
With the auxiliary wiring and second Littelfuse mega busbar with 300amp fuse already there it was relatively an easy install.
The Smartpass and battery brackets came from Ineos and the floor already has the battery lugs and studs there from factory,
Ordered 105ah Exide EFB battery from battery world and 35mm2 red and black cable, shrinkrap, corrugated sleeving etc., eyes and CTEK Smartpass from 12volt world, had heavy duty crimper anyway.
300 amp inline fuse came from Mauser UK.
No reprogramming of vehicle ecu required!
Most difficult part was getting those horrible plastic panels from under rear seats.
about 5 hours all in job if you copy the factory setup
Anyone contemplating same can pick my small brain for more info!
 

CRH

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Local time
4:56 AM
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Mar 5, 2024
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United Kingdom
for those interested, I just finished the install of the auxiliary battery and CTEK Smartpass 120S
Mine came as a cancelled order hybrid, Fieldmaster with off road package, locking diffs, h/ d wiring, winch but no auxiliary battery or CTEK Smartpass. Don’t ask me why that spec as to me makes no sense to have heavy duty wiring and winch but no auxiliary battery!
With the auxiliary wiring and second Littelfuse mega busbar with 300amp fuse already there it was relatively an easy install.
The Smartpass and battery brackets came from Ineos and the floor already has the battery lugs and studs there from factory,
Ordered 105ah Exide EFB battery from battery world and 35mm2 red and black cable, shrinkrap, corrugated sleeving etc., eyes and CTEK Smartpass from 12volt world, had heavy duty crimper anyway.
300 amp inline fuse came from Mauser UK.
No reprogramming of vehicle ecu required!
Most difficult part was getting those horrible plastic panels from under rear seats.
about 5 hours all in job if you copy the factory setup
Anyone contemplating same can pick my small brain for more info!
Please can you send me full details as I have the same set-up, Fieldmaster with off road pack and aux switches but no battery. I've purchased the CTEK 120S. If you can PM full diagram/pictures if you have them and as much information as possible. I'm desperate to get the battery in for my fridge, thanks
 
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