galwaygreen
Member Since: 30 Oct 2011
Location: plymouth
Posts: 6525
  
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ours went 5 years TO THE DAY we bought it new....battery at dealer #294 fitted and computered,
sorted and no faffing
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 19th May 2021 10:01 pm |
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webego
Member Since: 06 May 2015
Location: Bromley
Posts: 331
 
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| Re: 12v-12.3, low charging after battery replaced and BMS reset |
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limaluk wrote:Hi. I was looking for a lot yesterday about low (12v-12.3v) battery charge in my D4 right after replacing it. Of course, I did a BMS reset using the IID Gap tool. Charging (reading from the "cigarette lighter") was normal at the beginning 14.3V what surprised me, why do I need this reset?
However, after half an hour the charging dropped and the meter showed 12V- 12.3v !! This time I was surprised and scared. After a few hours of searching (some hints but no answer in disco3 forum) I found a good article about BMS, battery, and charging on Discovery 4. It says:
“After the BMS is resetted, the BMS performs a self-calibration. To do this, the battery is first charged with maximum charge voltage while the engine is running and then discharged to 75% charge. Discharging can take several days if only short distances are driven. During this time the alternator does not switch on! Only after that the BMS works normally again and charges the battery normally again.”
I hope that it will save the nerves of a few forum members.
Thanks for this. Put new HSB019 in. Like yours it initially showed similar (14.7). Checked on Gap which said 83%. Sat with car running for a bit and it rose to 85%. Went for a short drive (to drop the old battery off) and back home, checked again and was 80% and 12.3v! So fingers crossed this is indeed normal behaviour. I'll expect it to drop to 75% as you mentioned then. After that, will it go to 100% or is this some battery life extending setting that keeps it at 75%?
Thanks
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| 2nd Feb 2023 1:30 pm |
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edwardandtubs
Member Since: 23 Jun 2012
Location: Glossop
Posts: 460
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I'm glad I found this thread. I too have put a new HSB019 battery in today, BMS reset, initially it started charging at 14.7v (reading the cigarette lighter gadget). Later, when picking my son up, it was 12.3-12.4v and it worried me that the alternator had decided to pack up. Thankfully after reading this I'm a little more assured that its the BMS doing its calibration.
Phew....  Discovery 4 HSE Luxury Santorini MY12
Discovery 3 GS Manual Java MY07 ( gone )
Mini Cooper S
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| 23rd Nov 2023 7:00 pm |
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chopcat
Member Since: 08 Apr 2013
Location: Pembrokeshire
Posts: 481
 
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As far as I am aware the first of the D4’s do not have the ability to reset the BMS. Mine is 2009 and it does not come up as an option on the IID.
So does that mean that the only option is a wet battery and not an AGM?
Trevor may the odds be ever in your favor
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| 25th Nov 2023 5:27 pm |
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chopcat
Member Since: 08 Apr 2013
Location: Pembrokeshire
Posts: 481
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Sorted……Now found this
https://www.disco3.co.uk/forum/topic130997-30.html
So have the rest of the weekend sorted out reading it !
TC may the odds be ever in your favor
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| 25th Nov 2023 5:38 pm |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10796
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Considering a new battery in the next few weeks for my 2016 D4.
Is the YUASA HSB019 battery still the best choice?
If I fit this does the BMS (battery management system) have to be reset?
NJSS
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| 26th Nov 2023 11:27 am |
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KevinD3
Member Since: 05 Aug 2020
Location: Sutton Coldfield
Posts: 1276
 
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Hope so, bought one this morning as mine decided that -1 deg was enough..should have known it was going though, random niggle errors reported on dash over the last couple of weeks 
Checked my recipes, been in 4 years so has done good considering the short journeys I tend to make 2008 HSE Stornoway Grey
My Wife thinks the D3 is a hobby, The D3 thinks the wife is 💕
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| 26th Nov 2023 11:59 am |
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Hardware
Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13017
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It only comes with 4yr guarantee (3 elsewhere) when bought at Halfrauds and trade card softens the hit on your wallet  .
Dean
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2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer  ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
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| 26th Nov 2023 12:16 pm |
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NJSS
Member Since: 06 May 2009
Location: Catherington, Hampshire.
Posts: 10796
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Thanks everyone
I'm still not sure if I fit a YUASA HSB019 battery does the BMS (battery management system) have to be reset?
I currently have a Halfords AGM BATTERY AGM019 installed in May 2019 but now on its last legs.
NJSS
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| 27th Nov 2023 1:23 pm |
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eightfoot
Member Since: 12 Apr 2015
Location: sunny essex
Posts: 806
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re the bms reset i would think its needed as the new batt will have a new charging strategy and unless you reset the bms it wont know but saying that its prob not crucial but having a new batt fitted you may as well have it being charged at the optimal rate to ensure correct/long usage as there not cheap now
i fitted this to mine EK950 EXIDE START-STOP AGM CAR BATTERY 95AH 017 as it matched the original l/r batt fitted from new think i put the EA1000 EXIDE PREMIUM CAR BATTERY 12V 100AH - 017TE on the d3 the same time please excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4
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| 27th Nov 2023 2:16 pm |
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gazjacko
Member Since: 14 Jan 2012
Location: Portsmouth-ish
Posts: 233
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Why do Halfords not list the Yuasa 5019 as an option when you go online? I have a promotion code to get a bit more off and the do list it as a choice but not for the D4.
My car has just started to show glow plug light and waits on the press of the start button, plus I have the mystery speedometer needle intermittently illuminating making me think it’s time for a new battery.
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| 30th Nov 2023 9:01 am |
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Gary_P
Member Since: 03 May 2016
Location: Kent
Posts: 1659
 
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I would have thought the wait after pressing the starter is down to the change in temperature we have seen. Mine is doing the same. Only for less than 5 seconds though ( estimate). Battery in good shape as far as I can tell (stop start working fine) and only 3 years old. Gary
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Discovery 4 HSE 2016MY
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| 30th Nov 2023 9:34 am |
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Hardware
Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 13017
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gazjacko wrote:Why do Halfords not list the Yuasa 5019 as an option when you go online? I have a promotion code to get a bit more off and the do list it as a choice but not for the D4.
Still doing that? Their fitters knew it was wrong not to list it when I bought mine.
I joined Halfrauds Motoring Club "free level" and claimed free battery fitting. They did a bms reset too.
@NJSS whilst I think bms reset isn't essential if doing like-for-like swap, it needs doing if you swap to/from AGM. .
Dean
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2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
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| 30th Nov 2023 9:42 am |
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HairyFool
Member Since: 04 Jan 2023
Location: North Essex
Posts: 675
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KevinD3 wrote:
Checked my recipes, been in 4 years so has done good considering the short journeys I tend to make
You have food that lasts 4 years  Never in my house  A visitor from the dark side, my other vehicle is an is still an EV. Strictly speaking its SWMBO.
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| 1st Dec 2023 5:49 pm |
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