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November 14, 2017, 08:15:38 PM

PhilT

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New Battery
« on: November 14, 2017, 08:15:38 PM »
The X6 has started to show ‘increased battery discharge’ so I’m thinking the battery’s getting weak - has anyone replaced the original battery, and if so what with?

The original one doesn’t say if it’s an AGM so I’m unsure if I need to go for an AGM or not. Also, the original is 900CCA but all the replacements on Eurocarparts are less than that - will that be a problem?

I’d be grateful for any help or advice.

Cheers
Phil.

Current Drive:
E71 X6 30D 2011
E53 X5 3.0D 2004

Previous:
S54 Z3 MCoupe 2002
S50 Z3 MCoupe 1998
E46 330 Ci Sport 2003

November 14, 2017, 09:27:22 PM
Reply #1

X5Sport

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Re: New Battery
« Reply #1 on: November 14, 2017, 09:27:22 PM »
First you’ll need to code the replacement battery as the E71 also has the Intelligent Battery System fitted.

People have used Bosch Silver series AGM though there seems to have a been a bad batch given the number of premature failures a couple of years back.  Exide look to be a reasonable option.  I expect mine to start failing soon given the car is now 7.  I keep hooking a conditioner up to it as it isn’t being used much.

ECP website isn’t playing nicely at the mo, however Realoem states that the original 92Ah battery must be replaced with a 90Ah one.  That may bring the CCA down a bit?
:type:

November 14, 2017, 09:37:35 PM
Reply #2

PhilT

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Re: New Battery
« Reply #2 on: November 14, 2017, 09:37:35 PM »
Cheers for the reply, mines around the same age. It fires up fine but seems to shut off certain options when it recognises low charge state - stuff like the lights don’t come in when I unlock the car etc.

I’ve got the Carly app & adaper so no problem with the coding.

So presumably it’s ok to replace with an AGM even if the original isn’t one?

Cheers
Phil.

Current Drive:
E71 X6 30D 2011
E53 X5 3.0D 2004

Previous:
S54 Z3 MCoupe 2002
S50 Z3 MCoupe 1998
E46 330 Ci Sport 2003

November 14, 2017, 09:39:24 PM
Reply #3

X5Sport

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Re: New Battery
« Reply #3 on: November 14, 2017, 09:39:24 PM »
Original should be an AGM.  Mine is.  I think the coding allows you to change the type and Ah rating - which simply tells the IBS what voltages and charge profile to use.
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November 14, 2017, 09:45:51 PM
Reply #4

PhilT

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Re: New Battery
« Reply #4 on: November 14, 2017, 09:45:51 PM »
Had a look on the labelling but couldn’t find any indication that it was AGM.

Thanks for the help - will give the Exide a try.
Cheers
Phil.

Current Drive:
E71 X6 30D 2011
E53 X5 3.0D 2004

Previous:
S54 Z3 MCoupe 2002
S50 Z3 MCoupe 1998
E46 330 Ci Sport 2003