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#11
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#12
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hmm...only 810 CCA though.
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#13
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The petrol models take about 200A to start when warm. Maybe 250 for the V8 and diesel. There is no need for more than 500-600 the rest is overkill. Important is the build quality so in five years it still has 500cca out of the 800.
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#14
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My 3.0D (M57N) diesel has a DNIN85LMF, which is only rated at 780CCA - works fine. This DIN85LMF battery was fitted by a previous owner so when it needs replacing I'll go back to the recommended DIN88LMF, which vary a bit on the CCA rating depending on the brand etc. (but are usually 810CCA or greater, although I've seen cheap brands of DIN88LMF batteries rated at only 780CCA ... ).
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#15
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Good points. thanks. I have been out for a short drive and the car has been resting for two hours. I went out and did a #9 obc test - turning the ignition switch to pos 2. The lights turn on due to dark cloudy rainy day and the air con on. The reading is 11.6V. I am assuming this means the batter is towards the end of its charge life unless there is another issue. I will open the cargo bay floor and have a look to see for a date code tommorrow.
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#16
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Under 12 before starting not great. Yes sounds end of life to me unless you have a ground problem or such. Get a reading at the battery
Sent from my iPhone using Tapatalk Pro
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#17
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Heck of a load on the battery for this test though - ignition on, engine off but headlights and accessories running is probably 20-30 amp load... Even a good battery could show under 12v on the BC under these conditions (due to the battery's own internal resistance and the various losses in the BC measuring circuits).
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Wayne 2005 BMW X5 3.0d (b 02/05) 2001 BMW F650GS Dakar (b 06/01) |
#18
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True that might be an absolutely normal value
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
#19
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I have officially 'outsourced' my batteries to AAA. Their battery service came to my house and installed the thing for $190. they got there in 45 min on a Saturday.
It's totally not my M.O. to not research it and figure out the absolute top performing, best bang for the buck etc, but the battery I replaced was also a AAA battery from an emergency install in 2012. it lasted 7 years. no issues whatsoever. I know not everyone is a AAA member but if you are, a lot of folks don't know about their battery service, which in my n=1 experience, has been very good. the new battery came with the little plastic elbow for the new vent connecting it was super easy.
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2005 X5 3.0i - 71k mi (9.2018) -> 81k (9.19) -> 100k 9.21 --------------------------------------------------------------------- SOLD : ( 2003 X5 3.0 - 177k mi (9.2018) -> 186k (9.19) -> 205k (9.21) SOLD : ( 1997 328is Coupe - Hellrot Red SOLD : ( 1988 528e w/ Bullseye s256 / MS2 Extra / GC Coilovers / Yukon Coils ~ 300+ HP |
#20
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Was the battery liquid or AGM?
Sent from my iPhone using Tapatalk Pro
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2011 E70 • N55 (me) 2012 E70 • N63 (wife) |
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