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bear100



Member Since: 22 Mar 2010
Location: South Wales
Posts: 1164

Wales 2010 Defender 110 Puma 2.4 USW Santorini Black
Parasitic load I think

So I’ve got a parasitic load!
Both the main battery and the auxiliary battery drained Shocked

I have a yellow and red optima connected to a National Luna split charge with controller.

Both read 11v and dropping, I charged them both last week because it’s been stood still for 3 weeks, disconnected Sunday and today 11v

Going to test for draw but what is the average draw and how is it performed? Doors open etc?

Am I right in saying the solenoid should be disconnected from the auxiliary? There’s nothing connected to the auxiliary just yet (accessories that is). 2016 Range Rover Autobiography 4.4 TDV8
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)

Post #815076 14th Feb 2020 12:07pm
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Bluest



Member Since: 23 Apr 2016
Location: Lancashire
Posts: 2110

United Kingdom 2007 Defender 110 Puma 2.4 XS CSW Java Black

Sounds like something wrong with the split charge. It should separate the batteries at something like 12.5 or so volts. The manual should tell you.

I think the National Luna system has the option for a button to combine the batteries for jump starting. Maybe a fault with that circuit if you have it?

That being said it still doesn't explain why your batteries are drained so low. Have you got any accessories fitted that could be drawing current? 2007 110 TDCi Station Wagon XS

Post #815082 14th Feb 2020 12:58pm
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custom90steve



Member Since: 21 Jan 2010
Location: South West England
Posts: 17528

United Kingdom 

Best to test most suspicious circuits you think it may be. Often you’ll find the culprit.
I once had a permanently energised relay coil drawing about 120mA at rest that did it.
It was incorrectly wired from previous owner. 🇬🇧 Made In GB. 🇬🇧

It May Not Be Very Fast, Never Has Slow Looked More Bad As*.

Post #815110 14th Feb 2020 3:46pm
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bear100



Member Since: 22 Mar 2010
Location: South Wales
Posts: 1164

Wales 2010 Defender 110 Puma 2.4 USW Santorini Black

I think i have a parasitic load on the main battery and the aux battery is also getting drained from it and maybe the solenoid is sticking open?

what reading am i looking for in mA?

no accessories fitted at the moment i have got that far yet.

There is a feature on the controller to manually open the solenoid, it self opens after 15 mins i think, i will have too check it shuts down when the engine is turned off Idea 2016 Range Rover Autobiography 4.4 TDV8
2010 110 XS Utility 2.4TDCI
2010 Range Rover Sport TDV8 (gone)
2007 Discovery HSE TDV6 (gone)
1993 110 csw 200 tdi (gone)
1994 90 HT 300 tdi (gone)
1994 discovery 300tdi
90 hybrid 3.5 v8 (gone)
Range rover bobtail 3.5 v8 (gone)

Post #815119 14th Feb 2020 4:38pm
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