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GraemeS
Member Since: 17 Mar 2008
Location: NSW
Posts: 706
  
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drivesafe wrote:As far as Jump Starting goes, if you have the auxiliary battery installed under the bonnet, all you need to jump start is a single jumper lead, connected between the positive terminals of both batteries.
with the proviso that the 2nd battery has its own high current capacity earth cable, not just a low current charging negative cable.
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 3rd Oct 2010 7:25 am |
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PSC
Member Since: 01 May 2006
Location: Johannesburg
Posts: 255
 
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drivesafe wrote:I can see many problems for people trying to charge their auxiliary/house batteries when these vehicles operate with voltages as low as 12.2v.
Thanks drivesafe,
Would a DC to DC converter not also be a requirement ?
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| 3rd Oct 2010 7:29 am |
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drivesafe
Member Since: 23 Feb 2006
Location: Gold Coast, Australia
Posts: 867
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GraemeS wrote:drivesafe wrote:As far as Jump Starting goes, if you have the auxiliary battery installed under the bonnet, all you need to jump start is a single jumper lead, connected between the positive terminals of both batteries.
with the proviso that the 2nd battery has its own high current capacity earth cable, not just a low current charging negative cable.
Hi GraemeS, my D3 kits, these are all intended to have the auxiliary battery in the auxiliary battery compartment, are supplied with a suitably heavy duty earth/neg cable for earthing the auxiliary battery to the d3’s earth stud.
The kits fit the same way in a D4 when the auxiliary battery is fitted in the same compartment. 2008 TDV8 RR Lux + 2009 D4 2.7
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| 3rd Oct 2010 10:40 am |
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drivesafe
Member Since: 23 Feb 2006
Location: Gold Coast, Australia
Posts: 867
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PSC wrote:drivesafe wrote:I can see many problems for people trying to charge their auxiliary/house batteries when these vehicles operate with voltages as low as 12.2v.
Thanks drivesafe,
Would a DC to DC converter not also be a requirement ?
Hi PSC, like other brands of isolators, DC-DC converters have a cut-out voltage level of around 12.7v so they too would be continually cutting in and out and I’m not sure this would be a good thing for these types of devices, but even if they can handle the continuos on and off cycling, they are only good for charging one battery at a time and even then they would not be on long enough to be of any real use if the auxiliary battery was in a low state.
Whereas, the SC80-LR, even when the D4's voltage was low, would be continuously charging any number of auxiliary/house batteries. 2008 TDV8 RR Lux + 2009 D4 2.7
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| 3rd Oct 2010 10:47 am |
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