Cold batteries
Submitted: Tuesday, Jul 29, 2008 at 11:20
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Willem
It has been constantly under 4 degrees for the past 18 hours and when I jumped into the GQ this morning both batteries just said 'Ugggggggg'(maybe they need Uggboots). Both down to 12 volts. So now they are on charge. Batteries were both built in January 08.
I have only been driving short distances the past two weeks and the batteries probably have not had a good charge-up.
How Stuff Works website says "A battery is a can full of chemicals that produce electrons. The chemical reactions inside of batteries take place more slowly when the battery is cold, so the battery produces fewer electrons. The starter motor therefore has less energy to work with when it tries to start the engine, and this causes the engine to crank slowly.
Any other comments?
Cheers
Reply By: Member - Phil G (SA) - Tuesday, Jul 29, 2008 at 11:42
Tuesday, Jul 29, 2008 at 11:42
Gday Willem,
I think you need to get a multimeter and measure how much current is being lost when the vehicle is turned off. Might have the odd accessory consuming some electrons?
Are your batteries permanently paralleled?
AnswerID:
317837
Follow Up By: Willem - Tuesday, Jul 29, 2008 at 12:02
Tuesday, Jul 29, 2008 at 12:02
Hello Phil
There is nothing running in the background or visibly switched ON
Batteries in parallel but with solenoid separator.
May have run auxilliary battery low and then left Parallel switch ON a couple of days ago. Combined with the cold weather.............
Thems the breaks...lol
Cheers
FollowupID:
584193
Reply By: Member - Brad S (SA) - Tuesday, Jul 29, 2008 at 11:47
Tuesday, Jul 29, 2008 at 11:47
Hi Willem
In Canada and Alaska they use battery warmers, in fact these often come as standard. Basically an insulated heater blanket around the battery which plugs into the house mains when you
park the vehicle. Also another trick is to use batteries which have a higher rating in terms of cold cranking amps than is usually required for warmer climates.
Other things they do use include, "pan warmers", basically strap on sump oil heaters and heaters, circulating and non-circulating block heaters which either tap into the welsh plugs (or as they call them "frost plugs") or the radiator system. These draw about 1500w...but if it gets below -30C you've no hope anyway.
So...yep...warm batteries work lots better.
AnswerID:
317839
Follow Up By: Willem - Tuesday, Jul 29, 2008 at 12:06
Tuesday, Jul 29, 2008 at 12:06
Brad
I would not want to experience the cold any more than the present. Have made a resolution to disappear from here by May next year and not return until September
Maybe I should throw that old electric blanket over the engine. The alternative is just to wait until the day warms up.....lol
Cheers
FollowupID:
584194
Follow Up By: Peter 2 - Tuesday, Jul 29, 2008 at 18:08
Tuesday, Jul 29, 2008 at 18:08
Willem
Just heat the garage, the least you could do for the old Patrol ;-)))
FollowupID:
584295
Reply By: Dasher Des - Tuesday, Jul 29, 2008 at 12:02
Tuesday, Jul 29, 2008 at 12:02
G'day old fella
Had the same problem with the work car yesterday. Nuthing there. Jump started it and let the engine run for an hour and she's ok for now. The car hasn't had much to do over the last few weeks either and the battery is about 2 and a half years old.
It will get a decent charge tomorrow when I check out the Mallee Marching Girls LOL
AnswerID:
317845
Follow Up By: Willem - Tuesday, Jul 29, 2008 at 12:10
Tuesday, Jul 29, 2008 at 12:10
Mallee Marching Girls = Jumbucks = Woolly Nags?????....lol
FollowupID:
584198
Follow Up By: Dasher Des - Tuesday, Jul 29, 2008 at 12:25
Tuesday, Jul 29, 2008 at 12:25
Nope, They're the Mallee Roots LOL
FollowupID:
584204
Follow Up By: Louie the fly (SA) - Tuesday, Jul 29, 2008 at 20:10
Tuesday, Jul 29, 2008 at 20:10
Is that the local netball team??? lol
FollowupID:
584350
Reply By: Member - Brad S (SA) - Tuesday, Jul 29, 2008 at 12:11
Tuesday, Jul 29, 2008 at 12:11
Hi Williem
You could try putting and old blanket, sleeping bag insulation around the battery overnight...just might help.
And yeah, moving around will keep you warm no matter which way you look at it.
cheers
Brad
AnswerID:
317851
Reply By: Member -Signman - Tuesday, Jul 29, 2008 at 13:20
Tuesday, Jul 29, 2008 at 13:20
I guess the batts. are mounted into/onto steel carriers??
Just a l'il hint from vehicles used when the Snowy was being built- cut a piece of insertion rubber to sit the battery on. Just that bit of insulation can be the difference between go and no-go...
Even in storage, batterys should not sit on a concrete floor or a steel bench- always on rubber !!
AnswerID:
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Follow Up By: Willem - Tuesday, Jul 29, 2008 at 13:44
Tuesday, Jul 29, 2008 at 13:44
Yep, that was done when I bought the vehicle
FollowupID:
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Follow Up By: Vivid Adventures - Tuesday, Jul 29, 2008 at 14:59
Tuesday, Jul 29, 2008 at 14:59
nup - that's a myth. What the battery sits on is not the issue. The issue is the temperature and humidity it is stored at.
FollowupID:
584255
Follow Up By: Louie the fly (SA) - Tuesday, Jul 29, 2008 at 20:09
Tuesday, Jul 29, 2008 at 20:09
I have a piece of carpet underfelt under and around my battery as an insulating blanket. Still, I had to replace it the other week as it bleep itself. Probably a combination of sitting around in the cold and not being used for a couple of months. Pretty cold here recently (-2.7 yesterday morning at 07:15) but the new battery copes
well now.
FollowupID:
584349
Reply By: Member - Serg (VIC) - Tuesday, Jul 29, 2008 at 20:22
Tuesday, Jul 29, 2008 at 20:22
Willem,
If your battery new and (presumably) good quality then they MUST turn your engine under conditions described at say –20 degree Celsius without any effort. Particularly considering that you have two of them. I also have two batteries and never have any problem. Lowest temperature when I start the car was –4 degree. I use to have old 60 series LC a while back with one battery and it happily cranked in Kosciusko NP at –5 degrees. Putting blanket etc in Australia conditions just ridiculous. I would inspect all (and I mean *ALL*) connectors from battery to starter. Do not forget earthing point, chassis to frame and chassis (frame) to engine block points.
Cheers
Serg
PS. Yes, chemical reaction getting much slower with temperature decrease, but it just not enough for battery fail at +4 degrees.
AnswerID:
317971
Follow Up By: Willem - Tuesday, Jul 29, 2008 at 20:37
Tuesday, Jul 29, 2008 at 20:37
Thanks Serg
I think that the battery was disharged as I had both batteries running in parallel while using the inverter off the auxilliary battery.
After charging up all day the engine kicked over no worries and it was still 4 degrees outside...lol
I will however make sure that all battery connections are in good repair as you suggest.
Cheers
FollowupID:
584367
Follow Up By: Ted (Cairns) - Tuesday, Jul 29, 2008 at 21:49
Tuesday, Jul 29, 2008 at 21:49
Hi Willem
I'll second what Serg said. Lowest I remembering starting was -18 (not here obviously!). 2.4 diesel with one battery, with no problems. Had a previous 4x4 though I had massive problems starting in winter. Always turning just a tad too slow. Proved to be a faulty isolation switch, ended up ditching it and never had a problem afterwards (direct connection battery to starter). So a weak contact can have dramatic consequences when it's cold.
Cheers
Ted
FollowupID:
584398
Follow Up By: Member - Serg (VIC) - Tuesday, Jul 29, 2008 at 22:02
Tuesday, Jul 29, 2008 at 22:02
Ted,
-18 degrees obviously can not be getting in
Cairns! Just a matter of curiosity – where it was?
Cheers
Serg
FollowupID:
584403
Follow Up By: drivesafe - Wednesday, Jul 30, 2008 at 07:06
Wednesday, Jul 30, 2008 at 07:06
Hi Willem, you actually answered your own question.
As Serg posted, the temperature here in Australia does not get low enough to cause problems with batteries not being able to start a vehicle BUT this is as long as the battery(s) are charged in the first place.
The one thing a cold battery will do is require a higher charging voltage or they will take much longer to recharge.
In your case, as you posted, you have only been doing short trips. The short trips combined with cold batteries means you are just not replacing the power used to start your vehicle and over a period of time, you are progressively flattening the batteries.
If you intend to keep doing short drives then it will pay you to put the batteries on a charger on a regular basis and this should solve your problem, no matter what the temperature is.
FollowupID:
584450
Reply By: Member - Davoe (Yalgoo) - Tuesday, Jul 29, 2008 at 22:04
Tuesday, Jul 29, 2008 at 22:04
one of your batteries is stuffed. It has been masked by your solonoid joining the good one to start but the stuffd one has been theiving all the charge first you know about it is when you go nowhere - so much for duel batteries. Common problem and why I wouldnt fit a solonoid isolator again
AnswerID:
318011