Hanechdene
Member Since: 23 Jun 2009
Location: High Wycombe
Posts: 570
  
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Evening,
Does anyone know if the SC40 module from traxide can be used to charge a battery positioned in the back rather than under the bonnet?
Many thanks for any help,
Jamie
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 11th Nov 2012 10:23 pm |
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RichardB
Member Since: 04 May 2010
Location: Hants
Posts: 485
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Yes it can. In fact, the kit sold for the D4 is set up to do just that as the 'spare' battery box in the engine compartment isn't (spare that is as it has stuff in it).
I'm sure Drivesafe will be along to give more info if you need it.
Edit: actually, I think it's the SC80 now that's sold as a kit for the D4 so not sure if the above was what you were asking about.
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| 11th Nov 2012 11:19 pm |
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nighthawk
Member Since: 24 Jul 2010
Location: Malta
Posts: 1163
  
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SC40 or SC80 it doesn't matter. They both work in the same way. Both systems will charge whatever they're connected to. A couple of extra meters of cable will not make a difference  Dennis
2006 Discovery 3 TDV6 Commercial Manual Buckingham Blue
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| 12th Nov 2012 8:41 am |
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Hanechdene
Member Since: 23 Jun 2009
Location: High Wycombe
Posts: 570
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Morning,
Many thanks for the replies.
Battery going in the rear as it will save moving bits around under the bonnet.
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| 12th Nov 2012 9:18 am |
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drivesafe
Member Since: 23 Feb 2006
Location: Gold Coast, Australia
Posts: 867
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Hi and thanks RichardB and nighthawk.
Hi Hanechdene and as above, the SC40, which is no longer available and the SC80 will easily charge your battery in the rear cargo area and an additional advantage to using one of my isolators, you can actually fit the isolator with the battery in the rear cargo area.
You can not fit other types of isolators in the rear cargo area as the long cable run can cause voltage drop problems that will cause these other isolator to oscillate on and off as your drive along. 2008 TDV8 RR Lux + 2009 D4 2.7
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| 12th Nov 2012 7:33 pm |
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DiscoDunc
Member Since: 08 May 2006
Location: Bristol
Posts: 16390
 
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Jamie
see this http://www.disco3.co.uk/forum/topic85977.html
i call you tomorrow. Duncan
-----------------------------------------------------
If I'd known I was going to be so thirsty this morning I'd have drunk more beer last night.
FFRR Autobiography 4.4 SDV8 MY17
D4 HSE MY13 SOLD
FFRR 3.6 Vogue TDV8 SOLD
D4 HSE MY10 SOLD
D4 SE TECH MY15 SOLD
D4 XS MY12 SOLD
D4 HSE MY10 SOLD
D3 HSE MY06 - Re-Cycled Worldwide
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| 12th Nov 2012 7:36 pm |
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drivesafe
Member Since: 23 Feb 2006
Location: Gold Coast, Australia
Posts: 867
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Hi again DiscoDunc and as posted in the other thread, my isolators are NOT bothered by the periodical low operating voltages the D4 has.
As posted above, other makes of isolators ( split charger controllers ) will have problems if not fitted close to the cranking battery and even then, the D4’s voltage can drop to a point where other isolators continually cut in and out.
In Hanechden case, this will not occur with my isolators and even in set ups like the one Hanechden is planning, where he is mounting his auxiliary battery in the rear cargo area, my isolator will NOT oscillate on and off while he is driving, even when my isolator is mounted with the auxiliary battery and he will still get the benefit of the auxiliary battery continually topping up his cranking battery, if it’s low, thus giving a two way use for both batteries.
Can’t get these advantage with any other isolators. 2008 TDV8 RR Lux + 2009 D4 2.7
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| 12th Nov 2012 8:26 pm |
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Hanechdene
Member Since: 23 Jun 2009
Location: High Wycombe
Posts: 570
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Evening,
Many thanks for the replies.
DiscoDunc, give me a call it would be good to catch up.
Drivesafe, Looking at your website it looks like I can place the SC40 under the bonnet in the same location as in the D3 utilising the previous cables to link the SC40 to the crank battery. Then run a single positive cable to the aux battery in the rear and earth the aux battery to the body work in the rear. What size power cable would you recommend to run through the vehicle?
Out of interest what is the difference between the SC40 and SC80?
Just need to work out if I can mount the battery in LHS rear locker to leave it there permanently rather have to take it in and out, similar to Wiggs.
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| 12th Nov 2012 8:52 pm |
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drivesafe
Member Since: 23 Feb 2006
Location: Gold Coast, Australia
Posts: 867
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Hi Hanechdene, the difference between the SC40 and SC80 is the continuous current handling capacity.
The SC40 is rated at 45 amp while the SC80 is rated at 90 amps.
The SC40 will work perfectly for what you are planning but I would recommend you run both a positive and a negative cable from the driver’s side battery compartment to the rear battery.
There is an earth stud in the guard in the driver’s side battery compartment, where you can get a decent earth point for the rear battery.
You need to run 6B&S ( 13.5mm2 ) or 16mm2 cables to give your set up minimal voltage drop. 2008 TDV8 RR Lux + 2009 D4 2.7
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| 12th Nov 2012 9:36 pm |
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DiscoDunc
Member Since: 08 May 2006
Location: Bristol
Posts: 16390
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jamie
I have just run 35mm cables from the main battery to the rear cos it will be charging 2 yellow tops- drilled a hole in the wing by the FBH and dropped the +ve into the wheel arch then across the top of the chassis. there is also a big earth stud in the left front wheel arch just below the one behind the fuse box. used this stud on the D3 as well.
there didnt seem to be any vlotage drop we could see - but there must have been some. OK for what I need it for and worked well on the D3 for 6 years plus
ran both +ve -ve cables to the back along the top of the chassis rail then up through the grommets for the rear aircon into the left hand rear panel in the boot. - put a couple of junction boxes on the chassis bheind the spare wheel and 16mm cable to the rear bumper (for trailer battery) and through the aircon grommets to boot for the boot aux battery
need a ramp to get under the car though - couldnt do it lying down !!!
drivesafe, what would be the expected voltage loss across 35mm cable. i think the cable is about 4m long Duncan
-----------------------------------------------------
If I'd known I was going to be so thirsty this morning I'd have drunk more beer last night.
FFRR Autobiography 4.4 SDV8 MY17
D4 HSE MY13 SOLD
FFRR 3.6 Vogue TDV8 SOLD
D4 HSE MY10 SOLD
D4 SE TECH MY15 SOLD
D4 XS MY12 SOLD
D4 HSE MY10 SOLD
D3 HSE MY06 - Re-Cycled Worldwide
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| 12th Nov 2012 10:08 pm |
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drivesafe
Member Since: 23 Feb 2006
Location: Gold Coast, Australia
Posts: 867
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Hi Duncan and the point is to be capable of replacing used auxiliary battery capacity in a reasonable drive time.
This is where the 6B&S or 16mm2 cable works well.
There will still be voltage drop but the amount of drop is not just based on the size and length of the cable, but how low the battery(s) is and how large the battery capacity is.
Your system, with 35mm2 cable and two batteries in the rear will have similar voltage drop as my system with a single battery in the rear and 6B&S cable and will replace a similar amount of used battery capacity in the same time.
The reason for this is that you have to have two auxiliary batteries and in your case both in the rear.
Whereas, with my system in Hanechdene’s set up, he will only need the one battery in the rear to have about the same amount of usable capacity as yours because my system uses half the cranking battery’s capacity.
So the cable from the alternator to the cranking battery ( the 1st quasi auxiliary battery ) is 35mm2 and then 6B&S to the rear, to the second auxiliary battery.
This means my system will have a very similar voltage drop to yours when the same amount of used capacity needs to be replaced.
BTW, there is enough room inside the D4 to run 35mm2 cable. 2008 TDV8 RR Lux + 2009 D4 2.7
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| 13th Nov 2012 12:06 am |
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Hanechdene
Member Since: 23 Jun 2009
Location: High Wycombe
Posts: 570
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Hello again,
Many thanks for the reply.
So the cable for me to run to the rear is 16mm2 or 13.5mm2?
Can you run the 35mm2 in the same place as the smaller cables under the door tread plates?
Lastly what is the difference between SC40 and SC80?
Is it worth upgrading to a SC80 and if so how much would it cost including postage (no cables or plugs)?
Many thanks,
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| 13th Nov 2012 12:49 am |
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drivesafe
Member Since: 23 Feb 2006
Location: Gold Coast, Australia
Posts: 867
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Hanechdene wrote:So the cable for me to run to the rear is 16mm2 or 13.5mm2?
Lastly what is the difference between SC40 and SC80?
Is it worth upgrading to a SC80
Hi again Hanechdene, the difference between the SC40 and SC80 is the continuous current handling capacity.
The SC40 is rated at 45 amp while the SC80 is rated at 90 amps.
With your set up, all you need is the 6B&S or 16mm2. These two cables are pretty well the same size, it just counts on which one you can get locally.
Do you need to upgrade to the SC80? With only one auxiliary battery being fitted and in the rear, NO.
The SC40 is perfect for what you are planning. 2008 TDV8 RR Lux + 2009 D4 2.7
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| 13th Nov 2012 1:42 am |
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Hanechdene
Member Since: 23 Jun 2009
Location: High Wycombe
Posts: 570
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Hi Drivesafe,
Many thanks for the reply.
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| 13th Nov 2012 8:55 am |
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DiscoDunc
Member Since: 08 May 2006
Location: Bristol
Posts: 16390
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thanks for info Drivesafe - re cables, they are run across the top of the chassis rails from the LHS wheel arch to the rear Duncan
-----------------------------------------------------
If I'd known I was going to be so thirsty this morning I'd have drunk more beer last night.
FFRR Autobiography 4.4 SDV8 MY17
D4 HSE MY13 SOLD
FFRR 3.6 Vogue TDV8 SOLD
D4 HSE MY10 SOLD
D4 SE TECH MY15 SOLD
D4 XS MY12 SOLD
D4 HSE MY10 SOLD
D3 HSE MY06 - Re-Cycled Worldwide
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| 13th Nov 2012 9:42 am |
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