Battery Help

TopperXP · 02-02-2018, 03:17 AM

Hi,

Got to my car yesterday after work and it was completely dead , cut a long story short got RAC out who got me going and tested battery to show ok (no cells down) . Drove home about 10 miles car fine , started fine this morning just checked voltage and it is at 12.45v and charging fine at 14.5v . I dont have a dash cam or any other items plugged in to be draining it . I am happy to get a new battery and get my local indy to register it but unsure it is the battery at fault , i have bought a power pack as back up in case it happens again , but any info or advice is very much appreciated cheers.

t5pilot · 02-02-2018, 05:13 AM

I would think it was a minor electrical glitch opposed to battery related in that case. Exactly what though, I have no idea. I'd check the battery terminals are tight & just see how it goes & if it happens again, then think about getting it looked at.

teaston · 02-02-2018, 08:47 AM

How old is the car?

Watsey · 02-02-2018, 09:17 AM

I have a jump start battery pack in the car. Never thought I'd need it but at a full-day geometry setup the ignition was in for less by periods and I think the air-con fan was left running. Result; insufficient charge in battery to start the engine (330d).

Connected it to the terminals in the engine bay : started first time.

DBPOWER 600A 18000mAh Portable Car Jump Starter, Emergency Battery Booster Pack with Dual USB Charging Outputs, LED Flashlight and Compass (Black/Yellow) https://www.amazon.co.uk/dp/B01BF08H..._2biDAb1XM44T5

HighlandPete · 02-02-2018, 10:14 AM

Quote:

Originally Posted by TopperXP

Hi,

Got to my car yesterday after work and it was completely dead , cut a long story short got RAC out who got me going and tested battery to show ok (no cells down) . Drove home about 10 miles car fine , started fine this morning just checked voltage and it is at 12.45v and charging fine at 14.5v . I dont have a dash cam or any other items plugged in to be draining it . I am happy to get a new battery and get my local indy to register it but unsure it is the battery at fault , i have bought a power pack as back up in case it happens again , but any info or advice is very much appreciated cheers.

Something like Comfort Access, (if you have it), shorts or glitches can run a battery down fast. How do I know....?

If the car doesn't go into sleep mode, potential for a drain as well.

HighlandPete · 02-02-2018, 10:21 AM

I see you have a 320i... possible electric water pump/relay/sensor issue. Pumps are known to run on and flatten the battery.

Soul_Glo · 02-02-2018, 12:38 PM

Quote:

Originally Posted by Watsey

I have a jump start battery pack in the car. Never thought I'd need it but at a full-day geometry setup the ignition was in for less by periods and I think the air-con fan was left running. Result; insufficient charge in battery to start the engine (330d).

Connected it to the terminals in the engine bay : started first time.

DBPOWER 600A 18000mAh Portable Car Jump Starter, Emergency Battery Booster Pack with Dual USB Charging Outputs, LED Flashlight and Compass (Black/Yellow) https://www.amazon.co.uk/dp/B01BF08H..._2biDAb1XM44T5

+1

Got that too!

TopperXP · 02-05-2018, 01:49 AM

Thanks for the info guys , car has been fine since but i bought a similar power pack off amazon just in case .

TopperXP · 02-05-2018, 01:50 AM

Quote:

Originally Posted by teaston

How old is the car?

Car is 63 reg

999rigger · 02-05-2018, 02:15 AM

I would put a new battery on if its still on its original one.

02-02-2018, 03:17 AM	#1
TopperXP Private First Class 27 Rep 151 Posts Drives: BMW F30 320i m sport / BMW F40 Join Date: Dec 2016 Location: Great Britain iTrader: (0)	Battery Help Hi, Got to my car yesterday after work and it was completely dead , cut a long story short got RAC out who got me going and tested battery to show ok (no cells down) . Drove home about 10 miles car fine , started fine this morning just checked voltage and it is at 12.45v and charging fine at 14.5v . I dont have a dash cam or any other items plugged in to be draining it . I am happy to get a new battery and get my local indy to register it but unsure it is the battery at fault , i have bought a power pack as back up in case it happens again , but any info or advice is very much appreciated cheers.
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02-02-2018, 05:13 AM	#2
t5pilot Colonel 978 Rep 2,069 Posts Drives: M4 CP & S1000 XR Join Date: Oct 2015 Location: Yorkshire - UK iTrader: (1)	I would think it was a minor electrical glitch opposed to battery related in that case. Exactly what though, I have no idea. I'd check the battery terminals are tight & just see how it goes & if it happens again, then think about getting it looked at. __________________ /// BM3 + M-Power ///
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02-02-2018, 08:47 AM	#3
teaston Banned 10996 Rep 32,881 Posts Drives: X3 M40d Join Date: May 2012 Location: The High Seas iTrader: (1)	How old is the car?
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02-02-2018, 09:17 AM	#4
Watsey Major General 6428 Rep 8,502 Posts Drives: F31 330D sDrive M Sport Join Date: Jun 2015 Location: On sabbatical. iTrader: (1)	I have a jump start battery pack in the car. Never thought I'd need it but at a full-day geometry setup the ignition was in for less by periods and I think the air-con fan was left running. Result; insufficient charge in battery to start the engine (330d). Connected it to the terminals in the engine bay : started first time. DBPOWER 600A 18000mAh Portable Car Jump Starter, Emergency Battery Booster Pack with Dual USB Charging Outputs, LED Flashlight and Compass (Black/Yellow) https://www.amazon.co.uk/dp/B01BF08H..._2biDAb1XM44T5 __________________ Current : F31 330sD, remapped, Ohlins Road & Track, Millway camber plates, Quaife LSD, Stoptech brakes + Pagid RSL1 pads all round, Weichers front strut brace, Eibach front & rear anti-roll bars, Michelin MP4S.
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02-02-2018, 10:21 AM	#6
HighlandPete Lieutenant General 6659 Rep 15,858 Posts Drives: BMW F11 535i Touring Join Date: Mar 2007 Location: Scotland, Highland Region iTrader: (0)	I see you have a 320i... possible electric water pump/relay/sensor issue. Pumps are known to run on and flatten the battery.
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02-05-2018, 01:49 AM	#8
TopperXP Private First Class 27 Rep 151 Posts Drives: BMW F30 320i m sport / BMW F40 Join Date: Dec 2016 Location: Great Britain iTrader: (0)	Thanks for the info guys , car has been fine since but i bought a similar power pack off amazon just in case .
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02-05-2018, 02:15 AM	#10
999rigger First Lieutenant 88 Rep 314 Posts Drives: F33 4 Series Convertible Join Date: Sep 2016 Location: Sheffield iTrader: (0)	I would put a new battery on if its still on its original one.
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