Author Topic: Car Battery 9-3 2.0t 2006 - dying?  (Read 102 times)

mikseymono

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Car Battery 9-3 2.0t 2006 - dying?
« on: 11 January 2022, 04:57:38 PM »
Car Battery (9-3 2.0t 2006) No problems with starting but just put my DMM on it, as you do, since my 30 min round trip two days ago and it reads 12.1V at rest. Done the load test as well with my handled jobbie. Think this is a bit on the low side. Starting, its just over 14v so alternator is working good. Battery was put in 27 August 2018 by previous owner but of course doesn't mean it was 100% when put in. I was under the impression that around the 12v  mark this is a sign that the battery is on its way out......guess 3.5 years is not so bad......do a fair amount of mainly short trips, so is my current battery manly enough? Thanks for your thoughts...

M
Saab 9-3 2.0t 'Vector' Auto 2006

sgould

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Re: Car Battery 9-3 2.0t 2006 - dying?
« Reply #1 on: 11 January 2022, 11:07:05 PM »
I have recovered one of my batteries with a modern charger with a reconditioning setting.

I use one like this.  https://www.tayna.co.uk/battery-chargers/ctek/xs-0-8/
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aerojon

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Re: Car Battery 9-3 2.0t 2006 - dying?
« Reply #2 on: 12 January 2022, 03:38:14 PM »
That battery is in need of a good 8-10hrs charge at 3-5amps(disconnected from car)..Then remove the charger,leave for 12hrs for the surface charge to dissipate then read battery again..Short trips will reduce a batteries life,the minimum voltage before damage occurs is on the battery 12.4..After that the plates will start to sulfate and capacity will diminish along with the batteries ability to hold a charge..
A battery isn't a fit and forget unit,it needs looking after like other wearable items on a vehicle..