E90Post
 


Bimmer Retrofit
 
BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > Australia > Battery Replacement



Reply
 
Thread Tools Search this Thread
      07-11-2017, 11:57 PM   #23
rooks335
Private First Class
rooks335's Avatar
18
Rep
191
Posts

Drives: 2008 E90 335i
Join Date: Jul 2015
Location: Perth WA

iTrader: (0)

AH calculations

While on the topic of Ah, been reading around e90post that the formula is:
(RC / 2) + 16 = Ah
RC=reserve capacity
Ah=Amps per hour (vital coding so IBS knows how to correctly charge the battery)

Can anyone confirm this?
Appreciate 0
      07-12-2017, 12:26 AM   #24
Ken Oath
First Lieutenant
Australia
88
Rep
342
Posts

Drives: 2012 E92 330d
Join Date: Feb 2017
Location: Perth, Australia

iTrader: (0)

RC and Ah are different measurements and no accurate conversion exists.
The formula you have provided is commonly used but is not definitive.

Peukert’s Law is applied to determine change in capacity.
Appreciate 0
      07-12-2017, 08:39 AM   #25
Joe@TopGearSolutions
BimmerPost Supporting Vendor
Joe@TopGearSolutions's Avatar
United_States
167
Rep
899
Posts


Drives: 2009 335i M Sport
Join Date: Mar 2011
Location: Knoxville, TN

iTrader: (2)

Quote:
Originally Posted by rooks335 View Post
While on the topic of Ah, been reading around e90post that the formula is:
(RC / 2) + 16 = Ah
RC=reserve capacity
Ah=Amps per hour (vital coding so IBS knows how to correctly charge the battery)

Can anyone confirm this?
For coding and registering purposes, that formula will suffice.
__________________
Click Here To Order | coding@topgearsolutions.com | Performance Parts Discount w/ Coding Purchase!

E & F Series Worldwide Coding | DVD in Motion, PPK, Alpina and MORE! | Click HERE, HERE,
HERE for some of our feedback !

Appreciate 0
      07-13-2017, 09:48 PM   #26
rooks335
Private First Class
rooks335's Avatar
18
Rep
191
Posts

Drives: 2008 E90 335i
Join Date: Jul 2015
Location: Perth WA

iTrader: (0)

Quote:
Originally Posted by Ken Oath View Post
RC and Ah are different measurements and no accurate conversion exists.
The formula you have provided is commonly used but is not definitive.

Peukertís Law is applied to determine change in capacity.
True that. Have coded the 335 with Century's Ah spec, rounded to 70Ah.
using the formula Ah would have been
(130/2)+16= 81Ah !
Attached Images
 
Appreciate 0
      07-13-2017, 09:55 PM   #27
Ken Oath
First Lieutenant
Australia
88
Rep
342
Posts

Drives: 2012 E92 330d
Join Date: Feb 2017
Location: Perth, Australia

iTrader: (0)

As Australia uses DIN & IEC standards battery label requirements provide for Ah & CCA markings so no conversion is required.

North American market uses SAE which label RC.
Appreciate 0
      10-25-2017, 07:06 AM   #28
QuadroRC
New Member
QuadroRC's Avatar
Australia
0
Rep
15
Posts

Drives: MY08 E92 335i
Join Date: Apr 2014
Location: Eastern Melbourne,Australia

iTrader: (0)

Garage List
Hi guys,
Has any one tried this battery yet? for around $360 The price is so promising but dunno how reliable tho... back by 3.5 yrs warranty
Attached Images
 
__________________
08' 335i DCI, Chargepipe with Greedy BOV, MHD1+, ALPINA B3 managed 6AT, M-SPORT, D2 Racing Coilover Suspensions

Last edited by QuadroRC; 10-25-2017 at 11:27 AM. Reason: mistyping
Appreciate 0
      10-25-2017, 09:21 AM   #29
Ken Oath
First Lieutenant
Australia
88
Rep
342
Posts

Drives: 2012 E92 330d
Join Date: Feb 2017
Location: Perth, Australia

iTrader: (0)

That is an ISS (Idle Stop Start) battery which would have a much higher CCA rating due to a lower internal resistance than the OEM battery.

Does the vehicle you intend to use it with utilise ISS?

Also 42 months is 3.5 years.
Appreciate 0
      10-25-2017, 09:29 AM   #30
QuadroRC
New Member
QuadroRC's Avatar
Australia
0
Rep
15
Posts

Drives: MY08 E92 335i
Join Date: Apr 2014
Location: Eastern Melbourne,Australia

iTrader: (0)

Garage List
Quote:
Originally Posted by Ken Oath View Post
That is an ISS (Idle Stop Start) battery which would have a much higher CCA rating due to a lower internal resistance than the OEM battery.

Does the vehicle you intend to use it with utilise ISS?

Also 42 months is 3.5 years.
No Ken! Im looking to change my OE Battery on my 08 335i, it still has the first 70AH AGM on it.
__________________
08' 335i DCI, Chargepipe with Greedy BOV, MHD1+, ALPINA B3 managed 6AT, M-SPORT, D2 Racing Coilover Suspensions
Appreciate 0
      10-25-2017, 09:40 AM   #31
Ken Oath
First Lieutenant
Australia
88
Rep
342
Posts

Drives: 2012 E92 330d
Join Date: Feb 2017
Location: Perth, Australia

iTrader: (0)

It is possible to use an ISS battery but as you have the OEM battery which has lasted 9 years then a conventional AGM replacement with same or better specifications would suffice.

The ISS battery would be heavier in weight due to the increased amount of plates so there are pros and cons for each type.
Appreciate 0
      10-25-2017, 11:24 AM   #32
QuadroRC
New Member
QuadroRC's Avatar
Australia
0
Rep
15
Posts

Drives: MY08 E92 335i
Join Date: Apr 2014
Location: Eastern Melbourne,Australia

iTrader: (0)

Garage List
Thanks Ken, I think I will give it a go,
Being my kids' taxi driver. I oftenly have to sit in the car for hours watching movies while waiting for them between tuitoring classes. At least now I don't have to keep the engine running.
This battery will serve me well
__________________
08' 335i DCI, Chargepipe with Greedy BOV, MHD1+, ALPINA B3 managed 6AT, M-SPORT, D2 Racing Coilover Suspensions
Appreciate 0
      10-25-2017, 09:39 PM   #33
Ken Oath
First Lieutenant
Australia
88
Rep
342
Posts

Drives: 2012 E92 330d
Join Date: Feb 2017
Location: Perth, Australia

iTrader: (0)

What needs to be considered is Ah rather than CCA if you are using accessories.

CCA is what current can be supplied in a 30 second burst at -18įC.
Ah is the capacity to maintain the flow of current at the rate of 1 Amp per hour.

As you have a 70Ah battery look at purchasing a 90Ah battery which will give you a longer time to maintain the current flow. I think the maximum is 105Ah which can be coded for AGM.
Appreciate 1
      10-26-2017, 10:35 PM   #34
markv123
Private First Class
22
Rep
121
Posts

Drives: .
Join Date: Jan 2016
Location: Sydney

iTrader: (0)

Quote:
Originally Posted by Ken Oath View Post
What needs to be considered is Ah rather than CCA if you are using accessories.

CCA is what current can be supplied in a 30 second burst at -18įC.
Ah is the capacity to maintain the flow of current at the rate of 1 Amp per hour.

As you have a 70Ah battery look at purchasing a 90Ah battery which will give you a longer time to maintain the current flow. I think the maximum is 105Ah which can be coded for AGM.
Kenny bringing a raft of knowledge.. again!
I've heard there are batteries out there that can last 10 years plus!
Amazing!
Appreciate 0
      10-31-2017, 01:02 AM   #35
Desertraptor
Private First Class
Desertraptor's Avatar
Australia
7
Rep
119
Posts

Drives: 2006 E90 325i
Join Date: Oct 2017
Location: Adelaide

iTrader: (0)

Had to call RAA after washing the car with radio going. Flat battery.
Said to get it checked but so far haven't. It's been good since the jump.
Appreciate 0
      07-02-2018, 06:44 AM   #36
KingClifton
Private
1
Rep
94
Posts

Drives: 2009 320d & 2011.5 X5 30d
Join Date: Nov 2008
Location: Adelaide

iTrader: (0)

I'm still on my original battery after 9 years and 160,000km. Thinking of replacing it proactively as the car is no longer always parked in a fully enclosed garage, and we're in a very cold climate.

- Is coding after battery replacement necessary?
- Anyone using Century batteries? I'd prefer an Australian-made one, failing that the OEM one.
__________________
2009 E90 320d M-Sport /// 2011.5 E70 X5 xDrive30d
Appreciate 0
      07-02-2018, 07:28 AM   #37
Ken Oath
First Lieutenant
Australia
88
Rep
342
Posts

Drives: 2012 E92 330d
Join Date: Feb 2017
Location: Perth, Australia

iTrader: (0)

There are two different elements:

1. Coding is for a change in battery type (AGM vs wet cell) or size (CCA, Ah). Can be done with either NCS Expert or ISTA/P. Then as below.

2. When replacing a battery it has to be registered. Can be done with either INPA or ISTA.

Speaking to a recent OEM battery supplier and the expected life is between 8-12 years. Australian manufacturing is an oxymoron.
Appreciate 0
      07-04-2018, 04:34 AM   #38
Steve.T
New Member
0
Rep
13
Posts

Drives: E90 330i SE auto
Join Date: Jan 2016
Location: London

iTrader: (0)

Quote:
Originally Posted by Ken Oath View Post
Australian manufacturing is an oxymoron.
😏

Ok, I have just purchased my 10yr old Ď08 (but 24k miles) e90 330i and have similar problems. Pretty sure itís the original battery. Waiting for my gf last night with engine off but listening to cd and charging my phone it died after 10mins. I jumped it and is ok this morning but I guess it needs a new battery to be safe. Halfords show this when I give my car details. I can change it myself but and I am assuming that it can be Ďcodedí and Ďregisteredí at an independant given that itís a Yuasa and from Halfords specifically for my car.

Cheers
Steve


https://www.halfords.com/webapp/wcs/...&storeId=10001

Last edited by Steve.T; 07-04-2018 at 05:03 AM.
Appreciate 0
      07-04-2018, 05:13 AM   #39
Ken Oath
First Lieutenant
Australia
88
Rep
342
Posts

Drives: 2012 E92 330d
Join Date: Feb 2017
Location: Perth, Australia

iTrader: (0)

I would check what battery is installed and then try and get the same specifications or better.

80Ah is acceptable but if you intend to keep the vehicle for a long time and use accessories without the engine running it could be beneficial to bump it up to 90Ah.
Appreciate 0
      07-04-2018, 07:49 AM   #40
PhilipUK
///M Driver
PhilipUK's Avatar
United Kingdom
30
Rep
77
Posts

Drives: E93 M3, E93 335i, GT86, IS250
Join Date: Aug 2015
Location: Hampshire, UK

iTrader: (0)

Garage List
Quote:
Originally Posted by Ken Oath View Post
1. Coding is for a change in battery type (AGM vs wet cell) or size (CCA, Ah). Can be done with either NCS Expert or ISTA/P. Then as below.

2. When replacing a battery it has to be registered. Can be done with either INPA or ISTA.
Both can also be done with Carly.
__________________
--
Philip
Appreciate 0
      07-05-2018, 08:31 AM   #41
Steve.T
New Member
0
Rep
13
Posts

Drives: E90 330i SE auto
Join Date: Jan 2016
Location: London

iTrader: (0)

Quote:
Originally Posted by Ken Oath View Post
I would check what battery is installed and then try and get the same specifications or better.

80Ah is acceptable but if you intend to keep the vehicle for a long time and use accessories without the engine running it could be beneficial to bump it up to 90Ah.

Thanks. The battery is the original white 80ah 640cca. At 10 year old itís probably due for a change but Iím not getting a battery warning on the computer. TBH I would rarely, if ever sit using accessories with the engine off and now I know the potential outcome I shall never do it. I think this battery ticks the boxes for me and I can actually get an eqiuvalent branded model for £90 delivered from amazon. Itís due a minor service and brake pads so Iíll get them to register the battery at the same time.

Cheers
Steve

Last edited by Steve.T; 07-05-2018 at 04:10 PM.
Appreciate 0
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT -4. The time now is 01:33 PM.




e90post
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST