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Iguana
Member Since: 14 Oct 2013
Location: 'Sunny' Zomerset
Posts: 9402
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| Twin Electrics & Trailer Battery Charging |
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Hi all,
I have looked and found some results, but not all that good with electrics, so would be great if somebody gave me the idiots guide.
Anyway, planning to have a leisure battery in the Sankey camper, have no issues understanding how that works and how I can stick a solar charger on to the trailer.
What I'm struggling with is how and what I need to set-up so I can charge the battery and run things in the trailer from my twin electrics on the back of the Disco. I know that the Grey coloured tow electrics is used for charging caravans etc., but what do I need to to plug into this and what do I need on the other end to connect to the battery inside the trailer - I've been looking around, have come across loads of connectors etc, but how should this be wired up?
Is there not something that i can simply purchase and plug in/Attach?
Finally, can I leave the 12v fridge attached tot he battery all the time, while I'm charging the battery?
(Sorry for the basic questions  )
Cheers
Iggy Iggy/Ieuan
Current LR =
2015 RR Sport Autobiography
&
1992 Land Rover Defender Camper
- Gone but not forgotten:
MY10 D4 GS
MY05 Disco 3 'S'
MY14 FL2 HSE manual in Blue
MY15 Disco 4 HSE Lux in Santorini Black
MY08 Disco 3 SE manual in Buck Blue
1960 Series 2 88" (No idea why I sold it!)
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 6th Aug 2014 1:53 pm |
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IanT599
Member Since: 24 Jun 2012
Location: Wolverhampton
Posts: 600
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If you wire your sankey correctly then you can leave it connected all the time.
The trailer normally has a constant 12v should be pin 4 on the grey connector normally 20amp feed.
This would go to a relay on the trailer. This is the one which will power the batteries but when the car ignition is on.
Pin 6 possibly red is powered when the car is on. It is used to switch on the relay on the trailer above. This also feeds to the fridge.
You can leave your fridge connected to the trailer battery so the fridge is on all the time and then when you start the car the car then recharges the trailer batteries.
TBH the cable at the tow socket is only 2.5mm max and it'll struggle to recharge your batteries if they are in use/low.
Do you have dual battery on your car? Or an onboard split charge?
I'd run full size battery cables from the car aux battery to the tow socket and fit an anderson connecter. Then on the trailer an anderson connector to the batteries. That'll charge your sankey batteries up properly when the car is on.
Wiggs done this on his trailer and I'm in the process of doing it to mine too.
You should see some pics in his gallery. I'm sure others may have done similar and some different.
Someone else may comment similar or their own thoughts.
Good luck  Ian
No longer a LR owner
2018 BMW M240i
2011 FFRR 4.4 TDV8 Autobiography - Gone
2004 TD5 ES - Gone
2008 TDV6 G4 -Sold and missed very much
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| 6th Aug 2014 9:38 pm |
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Iguana
Member Since: 14 Oct 2013
Location: 'Sunny' Zomerset
Posts: 9402
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Thanks Ian, no dual battery in mine, so starting from scratch....so visited the local caravan shop today and spoke to one of the technicians, he talked me through the process and told me what i needed to get as well as a sheet explaining what I needed to do.
So going to have a play now, got connectors, battery, cable and diagram, so 1st step is to get all that connected and working, then we'll see how we get on to the next stage Iggy/Ieuan
Current LR =
2015 RR Sport Autobiography
&
1992 Land Rover Defender Camper
- Gone but not forgotten:
MY10 D4 GS
MY05 Disco 3 'S'
MY14 FL2 HSE manual in Blue
MY15 Disco 4 HSE Lux in Santorini Black
MY08 Disco 3 SE manual in Buck Blue
1960 Series 2 88" (No idea why I sold it!)
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| 8th Aug 2014 6:09 pm |
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P1DNC
Member Since: 30 Jul 2010
Location: Bury, Lancashire.
Posts: 625
 
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Hi Iggy,
I have the twin sockets on mine and use it as Ian suggests above, it works a treat and the 115ah battery last several days with the fridge and LED lights in the tent.
I just use the switched positive to feed the battery and run the fridge off the battery, plus I always fully charge the leisure battery prior to trip.
Hope your well and looking forward to meeting you at Chepstow.
Regards Phil.
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| 9th Aug 2014 12:04 pm |
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