Battery current at rest

Talk about the 406's electrical system, what wires do what, how to add extra functionality, etc.

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steve_earwig
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Re: Battery current at rest

Post by steve_earwig » Tue Dec 19, 2017 12:32 pm

The remote central locking usually goes tit sup...

It'd probably work with one of those gadgets you plug in the fag lighter socket to avoid the need for knowing your radio's code. If the fuse is in the right place obv.
Unskilled meddling sin©e 2007

2004 D9 2.0 HDi 110 Estate lhd VF38ERHZF81657352 - sold but being very well looked after.
1991 Yamaha TDM850 - fuel leaks galore!
2008 Toyota Recall4 2.0 VVTI ATM LHD JTMBH31V90D007261 - flimsy piece of crap.
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PeterN
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Re: Battery current at rest

Post by PeterN » Tue Dec 19, 2017 12:57 pm

I do wait for the proscribed period of time before disconnecting the battery, and no problems - so far, but if the battery is nearly flat when you try to engage the starter it goes flat and shuts the processor down anyway, in fact it resets the clock even when not completely flat.

The current that is being drawn from either battery is enough to flatten a good one within about 3 weeks and sometimes the car gets left that long without being used, we only generally only use it if we both need to go out at the same time or the other one is off the road for any reason.

Perhaps some brave person would like to check their car and let me have the results.

Peter

dirtydirtydiesel
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Re: Battery current at rest

Post by dirtydirtydiesel » Tue Dec 19, 2017 7:45 pm

Peter,
I'd happily check my 110 for you,
But I'm afraid you'll have to explain how to do it :oops:
I do have a multi-meter & pp2k
but do not know without reading up on the subject how to check it.

Kind regards Paul.
2002 110 HDi estate, Rapier in monaco blue! ( found quite a bit more power :cheesy: )
1999 3.0 V6 SE coupe in Diablo Red ( my baby )
2006 206 1.4 16v sport in Aegean blue ( wife's shopping trolley :roll: )

pp2000 owner / user, can offer Diagnostic's / fault code, reading / clearing for beer tokens in Leicestershire.

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Re: Battery current at rest

Post by PeterN » Wed Dec 20, 2017 1:16 pm

Hi Paul

Thanks for the offer. If you have a multimeter set it to 'amps' you may have to change the position of the + lead to do this, it will tell you on the meter. Open the bonnet switch everything off and make sure all the doors are closed, wait for about 3 minutes, disconnect the + battery lead and connect the + lead of the meter to the battery terminal, connect the negative lead to the battery lead you have removed, this will measure the current flowing from the battery. It would be a good idea to leave it connected for about 5 minutes as I found mine dropped to a lower current after this time.

When you have finished just connect the battery up again, you will need to reset the clock but it shouldn't affect anything else.

Peter

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Re: Battery current at rest

Post by frog » Thu Dec 21, 2017 8:30 am

Maybe it is better to connect the multimeter first, then disconnect the battery. In this way, the current is never really cut, but just re-routed via the multimeter.

After measuring, reconnect the battery first, then disconnect the multimeter.

This procedure will save you from having a disconnected battery altogether, which seems to give a chance of damaging the electronics (inside the BSI box). I read various postings indicating that even if the 3-minutes procedure is followed, the BSI has a possibility of losing its memory.
Current "fleet":
2003 406 Estate 2.0HDi 110 - 7 seater
2001 Citroen Saxo 1.6i 8v 100

Previously owned:
2000 406 Sedan 2.0 HDi 90
2000 406 Coupé 2.0i 16v 138 - Riviera Blue

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Re: Battery current at rest

Post by PeterN » Thu Dec 21, 2017 11:52 am

True.

dirtydirtydiesel
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Re: Battery current at rest

Post by dirtydirtydiesel » Thu Dec 21, 2017 9:53 pm

Hi Peter,
No worries, I'll have a go hopefully on Sunday,
Due to needing the car for work up until then & not wanting to mess about in the dark & cold.
Falling then I will have a go over Christmas week, as I won't be using it for that week.
Hope this is ok for you, Have a good Christmas.
Kind regards Paul :)
2002 110 HDi estate, Rapier in monaco blue! ( found quite a bit more power :cheesy: )
1999 3.0 V6 SE coupe in Diablo Red ( my baby )
2006 206 1.4 16v sport in Aegean blue ( wife's shopping trolley :roll: )

pp2000 owner / user, can offer Diagnostic's / fault code, reading / clearing for beer tokens in Leicestershire.

PeterN
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Re: Battery current at rest

Post by PeterN » Fri Dec 22, 2017 12:26 pm

Thank you very much.

Peter

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Re: Battery current at rest

Post by Welly » Fri Dec 22, 2017 1:49 pm

I'm brilliant* with multi-meters, two of mine have made an impressive *pop* sound in my capable hands :roll:
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Re: Battery current at rest

Post by Doggy » Fri Dec 22, 2017 10:24 pm

Welly wrote:
Fri Dec 22, 2017 1:49 pm
I'm brilliant* with multi-meters, two of mine have made an impressive *pop* sound in my capable hands :roll:
My £19.99 Maplins special works perfectly after 20+ years, (& no it's not a Fluke). :wink:
2003 HDi 2.2 6-speed Exec Estate

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Re: Battery current at rest

Post by PeterN » Sat Dec 23, 2017 1:02 pm

In the olden days I had the same experience, the early digital meters didn't suffer fools gladly, I got through several and they weren't cheap. I eventually bit the bullet and bought a 'Fluke' meter and that was brilliant, also very expensive but I still have it and it still works although the display is disintegrating at the edges, must be about 35 years old now. They are virtually indestructible, you can connect it across the mains on the ohms range and it just shrieks at you.

Peter

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Re: Battery current at rest

Post by steve_earwig » Sat Dec 23, 2017 7:25 pm

I have a Fluke too, a 77/BT which I (obviously) ahem found in a draw at work. The last calibration ended 27-06-1989, so it's a bit ancient, but it's still going despite my best efforts. I tend to stay away from mains ( :shock: ) but I've shorted all sorts of things through the current shunt and it still forgives me. It's been amazing, the best £0.00 I ever spent! 8)
Unskilled meddling sin©e 2007

2004 D9 2.0 HDi 110 Estate lhd VF38ERHZF81657352 - sold but being very well looked after.
1991 Yamaha TDM850 - fuel leaks galore!
2008 Toyota Recall4 2.0 VVTI ATM LHD JTMBH31V90D007261 - flimsy piece of crap.
1953 Matchless G3LS - It's alive!!

PeterN
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Re: Battery current at rest

Post by PeterN » Sun Dec 24, 2017 10:16 am

Mine is a Fluke 11, don't know how old that makes it but it's repaired a fair few TV's. 8)

Peter

dirtydirtydiesel
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Re: Battery current at rest

Post by dirtydirtydiesel » Tue Jan 02, 2018 9:15 pm

Hi Peter,
Sorry for taking so long to reply, during the holidays it was either wet, -temps, snowy
or the wife said family comes first ( it was Christmas :roll: ) ie Christmas day & New year's day.

Anyhow I have some results for you , 120ma dropping to 50ma when left for over one hour.
I did fit a brand new Exide EA770 premium 096 battery last winter , 77ah & 760cca but I
don't suppose that would affect the amount of draw.

Sorry I can't be of more assistance, Paul.
Happy new year.
2002 110 HDi estate, Rapier in monaco blue! ( found quite a bit more power :cheesy: )
1999 3.0 V6 SE coupe in Diablo Red ( my baby )
2006 206 1.4 16v sport in Aegean blue ( wife's shopping trolley :roll: )

pp2000 owner / user, can offer Diagnostic's / fault code, reading / clearing for beer tokens in Leicestershire.

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Doggy
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Re: Battery current at rest

Post by Doggy » Tue Jan 02, 2018 9:28 pm

That suggests an 096, (75Ah) battery should still have 50% capacity after 750 hours or about a month at a 50mA discharge rate.
Obviously the chances of it still starting the car will vary according to temperature, but 3 - 4 weeks in the summer shouldn't be a problem.

To be fair my bro's current 110 HDi doesn't seem to be able to manage a week, but his previous 3 406's and both of mine never had any issues.
2003 HDi 2.2 6-speed Exec Estate

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