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coopss



Member Since: 21 Apr 2018
Location: Hampshire
Posts: 281

Battery or charging issue?

Hi all,

Bought a battery from Tayna batteries (Yuasa 019 95Ah 850cca) and within 5 mins of shutting off the car I get a low battery warning, even after a 3+ hour drive.

Looks like the battery is duff - thoughts?

- With the engine running: 14.7v(IID vehicle batter voltage)
- Turn the engine off: drops to 12.5 then drops down slowly
- If I unlock and leave doors open for 5 minutes I get the battery low message. Can something drain the battery that quickly or is a battery issue?
- I can leave the car for a week and it will still start no problems, so doesn’t feel like anything is draining it when locked. I occasionally get the ‘click’ when trying to start - worse before the battery was replaced. New starter as well. 1995 4.6 v8, green/tan (long gone)
2005 4.8iS X5, blue/black
2011 4.4 tdv8, black/black (gone)
2003 3.0d X5, Oxford green/black/manual
2021 p575 SVR, BR green/vintage tan

Post #576422 17th Dec 2020 9:44am
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mercs600



Member Since: 19 Mar 2011
Location: North Yorkshire
Posts: 425

England 2002 Range Rover Vogue Td6 Java Black

Had a similar issue and it was the carbon brushes on my alternator. One was only just touching hence low voltages and battery going flat despite 100 mile round trips . The car is 18 years old though so was not totally unexpected Mr. Green

Post #576483 17th Dec 2020 9:23pm
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ur20v



Member Since: 19 Feb 2019
Location: None
Posts: 634

A Trap 

What is your charging voltage at idle and 2500rpm with load? If it starts at 13.5v or lower then rises with revs your alternator is on its way out... also the alternator can cause a large drain if the rectification circuit fails.

If you leave your iID in and drive you can monitor what is happening over a journey... should start high (14.7v~) then drop back over 20-40 mins to 13.8v approx.

Fully charge your battery (disconnected from the car) over 24hrs and check standing voltage after disconnecting the charge for an hour or so. Should read ~12.8v

Post #576504 18th Dec 2020 9:29am
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coopss



Member Since: 21 Apr 2018
Location: Hampshire
Posts: 281

Thanks, will try to get a better test as well. It had a new alternator 15k miles ago so hopefully not that! Here is a video I took a couple weeks ago. It’s at idle for the first 13 seconds then the engine is shut off (ignore the rpm at the top, not sure why it shows incorrectly). Rear calliper decided to seize this morning so that’s another thing on the list

 1995 4.6 v8, green/tan (long gone)
2005 4.8iS X5, blue/black
2011 4.4 tdv8, black/black (gone)
2003 3.0d X5, Oxford green/black/manual
2021 p575 SVR, BR green/vintage tan

Post #576509 18th Dec 2020 10:31am
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Siftah



Member Since: 11 Jun 2018
Location: Barcelona
Posts: 347

Spain 2011 Range Rover Vogue TDV8 Stornoway Grey

ur20v wrote:

If you leave your iID in and drive you can monitor what is happening over a journey... should start high (14.7v~) then drop back over 20-40 mins to 13.8v approx.


On a TDV8 4.4 2010MY I don't think this is the case. During the first 20 minutes of driving, the alternator sometimes doesn't even charge, only when the car's coasting or at idle will it charge.

Once the engine's fully warmed then you'll start to see 14.7v or so, depending on the outside temperature. There's another thread on here recently with more details/explanation...

Post #576515 18th Dec 2020 12:17pm
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Siftah



Member Since: 11 Jun 2018
Location: Barcelona
Posts: 347

Spain 2011 Range Rover Vogue TDV8 Stornoway Grey

coopss wrote:
Thanks, will try to get a better test as well. It had a new alternator 15k miles ago so hopefully not that! Here is a video I took a couple weeks ago. It’s at idle for the first 13 seconds then the engine is shut off (ignore the rpm at the top, not sure why it shows incorrectly). Rear calliper decided to seize this morning so that’s another thing on the list


Have you tried putting a multimeter onto the battery to see if it marries up with what the IIDTool is reporting? It could be the voltage sensor isn't reading correctly or there's a bad earth or similar giving you misleading readings? :\

Post #576516 18th Dec 2020 12:18pm
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Bl4ckD0g



Member Since: 16 Feb 2020
Location: 127.0.0.1
Posts: 1322

Netherlands 2010 Range Rover Autobiography 5.0 SC V8 Santorini Black
Re: Battery or charging issue?

coopss wrote:
Hi all,

Bought a battery from Tayna batteries (Yuasa 019 95Ah 850cca) and within 5 mins of shutting off the car I get a low battery warning, even after a 3+ hour drive.

Looks like the battery is duff - thoughts?



My experience as well, until i had enough and exchanged it. But then the second Yuasa did it as well, I refused another exchange and got my money back. Bought a Bosch and had no more issues.

Post #576561 18th Dec 2020 10:47pm
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northernmonkeyjones



Member Since: 24 Mar 2012
Location: derby
Posts: 8526

United Kingdom 2016 Range Rover Autobiography SDV8 Santorini Black

Caution to the OP.

The later 322s came with an AGM battery fitted. so a lead acid Yuasa will be unsuitable. the charging system works at different voltages than a standard battery and the car has a charge monitoring system, which won’t like a Lead acid being chucked in. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

Post #576562 18th Dec 2020 11:24pm
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coopss



Member Since: 21 Apr 2018
Location: Hampshire
Posts: 281

Siftah wrote:

Have you tried putting a multimeter onto the battery to see if it marries up with what the IIDTool is reporting? It could be the voltage sensor isn't reading correctly or there's a bad earth or similar giving you misleading readings? :\


Good call, checked today and all showing correctly.

Bl4ckD0g wrote:

My experience as well, until i had enough and exchanged it. But then the second Yuasa did it as well, I refused another exchange and got my money back. Bought a Bosch and had no more issues.


Interesting - thanks for the feedback

[quote="northernmonkeyjones”]

Caution to the OP. 

The later 322s came with an AGM battery fitted. so a lead acid Yuasa will be unsuitable. the charging system works at different voltages than a standard battery and the car has a charge monitoring system, which won’t like a Lead acid being chucked in.

[/quote]

This one is an AGM I think mate - went for one specifically based on feedback here.

Will try a Halfords battery test as the next move. 1995 4.6 v8, green/tan (long gone)
2005 4.8iS X5, blue/black
2011 4.4 tdv8, black/black (gone)
2003 3.0d X5, Oxford green/black/manual
2021 p575 SVR, BR green/vintage tan

Post #576633 19th Dec 2020 7:57pm
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Siftah



Member Since: 11 Jun 2018
Location: Barcelona
Posts: 347

Spain 2011 Range Rover Vogue TDV8 Stornoway Grey

Worth a try - I know the IID Tool reports something like 12.2v for me when I see 12.5 or above across the batteries terminals.

That difference is quite a significant bit of charge, so it's worth checking for! Smile

For what it's worth, I saw 12.2v reported by the IIDtool today with a *brand new* and freshly charged battery which had been sat at 12.9 volts resting before putting into the car, so the Gap tool is not to be trusted, IMHO, when it comes to battery voltages.

(And I should clarify, it's not "the gap tool", which is at fault - it's presumably just reporting what the ECU is telling it, rather than measuring the voltage. Even if the voltage at the OBD port is 12.2 it doesn't necessarily mean the battery voltage is the same! There's no replacement for getting a decent multimeter and measuring the voltage on the battery directly)

Post #576635 19th Dec 2020 8:13pm
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dexion7



Member Since: 06 Jun 2013
Location: Tynemouth
Posts: 291

2010 Range Rover Vogue SE TDV8 Alaska White

and don't rely on voltmeters!

digital meters in theory *should* all read the same but they don't. I've got 3 and they all give different readings even when sticking them on a constant voltage source such as an unloaded battery.

Post #576669 20th Dec 2020 10:17am
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Bl4ckD0g



Member Since: 16 Feb 2020
Location: 127.0.0.1
Posts: 1322

Netherlands 2010 Range Rover Autobiography 5.0 SC V8 Santorini Black

??? So how is one supposed to read voltage if one can’t rely on a volt meter Wink

Post #576671 20th Dec 2020 10:33am
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Siftah



Member Since: 11 Jun 2018
Location: Barcelona
Posts: 347

Spain 2011 Range Rover Vogue TDV8 Stornoway Grey

Man who has a watch, knows what time it is.

Man with three watches is never quite sure Wink

Post #576672 20th Dec 2020 10:33am
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northernmonkeyjones



Member Since: 24 Mar 2012
Location: derby
Posts: 8526

United Kingdom 2016 Range Rover Autobiography SDV8 Santorini Black

When I’m in my kitchen I have no idea what time it is at all......

I have a clock, 2 ovens and a microwave..... all tell different times it could be as early as 9.30 or as late as 18.30 depending on which device I believe. There is nothing that can't be fixed with a hammer😜😜
FFRR 4.4 SDV8 Autobiography Santorini Black.
Fiat 500x 1.4 multiair Lounge 2015
2010 LR D4 Commercial 2.7 TDV6

Post #576678 20th Dec 2020 11:29am
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Bl4ckD0g



Member Since: 16 Feb 2020
Location: 127.0.0.1
Posts: 1322

Netherlands 2010 Range Rover Autobiography 5.0 SC V8 Santorini Black

Hehehehe very good.

Post #576679 20th Dec 2020 11:32am
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