Member Since: 26 Dec 2012
Location: Essex
Posts: 44
Battery issues...
Hi all. Looking for some advice... I've been reading on here about flat batteries & stories of woe. As someone who works with my d4 all week, I regularly leave doors or tailgate open while I'm onsite with led beacons on, last week I was sitting with the radio on for an hour whilst waiting for a customer, once he'd turned up I had another hour working and then tried to leave but to my disappointment the 'tick, tick, tick' of relays and not enough vroom of engine when I hit the start button. Got a boost and headed back to connect myself to a charger....is there anyway of attaching a split charged second battery aswell as a device to limit the battery use to ensure enough is left to crank the battery...
I see a lot of Transit/Sprinter mobile workshops on site that use waaay more than my beacons and radio and they seem to have very little trouble....
Cheers, Al.
27th Oct 2013 1:48 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
It does sound like your working patterns would appreciate a dual battery setup but you have to move a few items around in the D4 second battery box to make room.
And yes, the D4 does draw a hell of a lot more amps than a Sprinter or suchlike.
Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 26 Dec 2012
Location: Essex
Posts: 44
Yeah I can appreciate that d4's draw more than a van as they are more lux-car than a site tool...think a defender would have been a better choice if I was always local... I was not aware of a second battery box though??
27th Oct 2013 2:38 pm
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
The second battery box is in the same place as it was on the D3. Unfortunately in the upgrade to the D4 LR filled it with other stuff leaving it like this:
Click image to enlarge
But with a bit of a reorganisation it can look something like this:
Click image to enlarge
Or like this:
Click image to enlarge
Have a read of this article but others on this forum have done the same:
Simply move the beacons and UHF power feed to the ABG-25 and the SC80-LR will allow you to draw up to half the cranking battery’s capacity to run your gear but once the batteries get down to 12.0v ( 50% SoC ), the SC80-LR will isolate the cranking battery, leaving it with heaps of power to be able to start your motor.
The ABG-25 would then allow your gear to be powered from the auxiliary battery until it got down to 11.58v ( 20% soC ) and it would then shutdown, protecting the auxiliary battery from being over discharged and damaged.2008 TDV8 RR Lux + 2009 D4 2.7
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