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Conference terri::cars_uk

Title:Cars in the UK
Notice:Please read new conference charter 1.70
Moderator:COMICS::SHELLEYELD
Created:Sun Mar 06 1994
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:2584
Total number of notes:63384

1618.0. "Battery experts out there?" by LARVAE::CLEMENTS_D () Mon Dec 02 1991 11:51

    Need some advice, folks.
    
    Have car sitting in garage, not used regularly, but I do start the
    engine every month or so and let it run for half-an-hour, and also take
    it up and down th edrive a few times to stir the gearbox around and
    enasble the brakes to be applied for real.
    
    Suddenly, the battery appears to have given up on me.
    
    It has been trickle charged and the electrolyte kept at an appropriate
    level.
    
    All has been well until this week end it has suddenly decided that the
    **MINIMUM** rate of charge that it will take is 4A, its gassing off
    much more than before and I'm only measuring about 6 volts across the
    terminals. 
    
    The battery is about a year and a half old altogether.
    
    I have tried a few discharge/recharge cycles, both short and furious
    (put old spot lamp directly across the battery) followed by a recharge
    and sloooow and gentle (put old side light bulb across battery)
    followed by a recharge.
    
    I seem to recall that you can "rejuvenate" a battery by either getting
    it to full charge and then replacing the electrolyte with fresh (or is
    it get it fully discharged and then replace electrolyte).
    
    Any ideas....... apart from it's stuffed, and buy a new one?
     
T.RTitleUserPersonal
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1618.1What have you got to lose?PLAYER::BROWNLBecause I canMon Dec 02 1991 12:136
    This might sound strange, but it works...
    
    Drop a couple of aspirin in each cell, and recharge the battery. If
    that fails, then it's dead.
    
    Laurie.
1618.2CURRNT::PACE::RUTTERRut The NutMon Dec 02 1991 12:1320
    I don't know the answer, but since I have a dead battery in the
    garage, I'd be interested to know if it can be brought back to life.
    
    There was a similar question to yours in note 607, see if the
    replies to that are of any use to you...  Chances are, you probably
    entered a reply to that yourself, but if not it may be of some help.
    
    J.R.
    
    PS other BATTERY notes :-
    
       352  RDGENG::MOXLEY       12-OCT-1988     6  Batteries and jump starting
       607  AYOU17::NAYLOR       23-MAY-1989    11  Battery death syndrome.
       980   CHEFS::KARVE         9-MAR-1990    15  Aftermath of flat battery - Rade
      1014  MRSLOW::DDSQA         6-APR-1990    16  Battery drain problem
      1357   VOGON::KAPPLER       6-FEB-1991     2  Battery supplier recommendation.
      1407  CRISPY::BUSHNELLJ     3-APR-1991    18  Electrical modifications - including a battery.
      1470   YUPPY::MCINTYRE     17-JUN-1991    11  Escort Battery Light problem
      1509  BLKPUD::WARNESG      22-JUL-1991     4  Battery question.
    
1618.3No expert, but I've seen one!HOTSPR::KENNEDYVote Rab C. NesbittMon Dec 02 1991 12:1723
    I think that your battery is probably shot. I seen to remember, from
    the time that I worked on aircraft electrical systems, that the sort of
    lead acid battery used on cars will deteriorate if left for long
    periods, either inactive or on a trickle charge. I think it was
    something to do sulphating of the plates that results in reduced
    capacity and eventual flaking of the plates - the material then falls
    to the bottom of the cell and shorts out the plates. I seem to remember 
    that when we put aircraft into storage for long periods we fully
    charged the battery and then drained the electrolyte - when we took it
    out of storage we replaced the electrolyte with fresh of the correct
    SG.
    
    It's only my opinion but I think that your idea of starting the car
    every month or so is not a good one. Running the engine for half an
    hour will never full heat it up enough to get rid of all the moisture
    that you are creating caused by condensation from the previous run!!!
    I have stripped an engine (from a motorcycle) that was left idle for
    eight years or more, never started, just stored in a brick garage -
    internally it was fine - no corrosion at all. I just put it back
    together, put in fresh oil and ran it. Externally it looked pretty
    grotty, but a good spray of WD40 would have probably prevented that.
    
    - John.
1618.4Motorcraft battery of Indeterminate state?WELCLU::NISBETDougie Nisbet @WLO 7 853 4334Mon Dec 02 1991 19:3213
1618.5not much in them to go wrong guv'ner....ODDONE::BELL_A1Tue Dec 03 1991 20:4629
    
    let me see if I can explain this........
    
    a battery consists of an outer caseing, a given number of nickel plates
    and lots of acid. The acid reacts with the Nickel and and the offshoot
    is electricity. 
    
    problem 1: the acid causes deteriation of the Nickel plates, the affect
               of this is the edges of the plates flake off and float
               around. eventually the flakes settle in the base of the
               outer casing and short 2+ plates together. 
    diagnosis: plug all holes in the casing, turn battery upside down and
               shake for 1+ minute(s). if battery recharges successfully
               follow next step. 
    solution:  drain acid into suitable container, flush plates and replace
               acid.
    
    problem 2: the acid weakens and fails to react with the plates.
    Diagnosis: obtain a Gunson/generic battery tester and check as per
               tester instructions.
    solution:  replace acid
    
    problem 3: the reaction between the acid and the plates cause the
               plates to totally diintegrate/breakdown
    solution:  replace battery. 
                
    
      Alan.
    
1618.6Connections!!!!!!!!!!!EEMELI::JMANNINENIKnowIt'sTrue'causeISawItOnVTThu Dec 05 1991 09:446
    Check all the connection surfaces!!!! 
    
    And also; I agree that half an hour is not enough to recharge the
    battery, especially if your garage is not warm.
    
    - Jyri -
1618.7LARVAE::CLEMENTS_DThu Dec 05 1991 11:497
    Re .5 ........
    
    Where's nickel come into it? The basic reaction is lead + acid --> lead
    sulphate plus electrons..... hence they are called lead/acid batteries.
    Unless, of course you are using a sodium/liquid sulphur battery........
    
    Am I missing something?
1618.8so I can't be right all the time....ODDONE::BELL_A1Thu Dec 05 1991 21:517
    
    re-1
       dunno.... I always thought that they nickel cadmium but the same
    thing happens with Lead and acid.....just change the names and stop
    being pedantic :-)...
    
      Alan.
1618.9Re .8, my apologies......LARVAE::CLEMENTS_DThu Dec 12 1991 15:3713
1618.10hmmmmLARVAE::HUTCHINGS_PManchester CityFri Dec 13 1991 15:4015
    no it ain't.......
                      .
                       :-) 
    
    As any good forklift/milkfloat injuneer knows...batteries for these
    naffers are mega wads of dosh...they are humungeous 2v cells joined by
    massive lumps of lead, and can last an incredible amount of time if
    looked after properly, but when a replacement is required....the
    customer is _at first_  pleased his truck/float is working again....
    
    until he gets the bill.........
    
    :-) :-( :-) :-(
    
    Paul (ex long_suffering_Bagnalls_Injuneer)
1618.11STRIKR::PYNESandra PyneTue Dec 08 1992 18:3112
PROBLEM : I have an Escort that seems to have battery problems !

	The car starts fine for a week or so then it decides not to start.
        Hence, I have to jump start it and run it to re-charge the battery, 
	then its fine again for another couple of weeks then it plays up
	again.

	Is it likely to be the Battery (New One ?) or the Alternator ?


	Sandra
1618.12RICKS::EURUP::RUSLINGDave Rusling REO2 G/E9 830-4380Tue Dec 08 1992 20:519
	What do you mean by not starting?  Is the engine turning over at all?
	If not, then it sounds like a loose connection.  As it's an intermittant
	problem, then loose connections are likely.  If it's a duff alternator,
	the ignition warning light will come on (maybe not all the time,
	just some of the time), and the battery will slowly drain until one
	day it hasn't enough juice to turn the motor.

	Dave
1618.13check the tautnessBLKPUD::WILLIAMSHWed Dec 09 1992 15:153
    Slipping Fan belt?
    
    Huw.
1618.14longer with lights on...UBOHUB::BELL_A1still they want moreThu Dec 10 1992 14:346
    
    
    ...short running distance (a diascharged battery requires approx 13
    miles to recharge)
    
    Al
1618.15Batteries and [extreme] cold - do they mix?VARDAF::CHURCHDave Church@VBE (DTN 828-6125)Wed Feb 28 1996 22:369
    Should you protect your battery in any way [cover it] if you are up in
    the mountains and plan to leave your car standing around outside for a
    week. Thinking that it can get mighty cold at night up at 6000 feet...
    
    Can the acid actually freeze and/or can the cold cause any damage? If
    it does freeze do you just take it inside overnight and let it warm up
    slowly...?
    
    Dave
1618.16how cold is cold?AIMTEC::STDBKR::Burden_dKeep Cool with CoolidgeThu Feb 29 1996 00:1915
If the acid level topped off, and the battery has a good charge, then the cold 
will only cause the battery to loose some power.  It should not freeze or 
otherwise get damaged.  If it gets cold enough for the acid to freeze, I would 
suspect the anti-freeze or fuel would have frozen as well and you have major 
problems.

Keeping the battery warm would not be a bad idea.  A few weeks ago it was 
dipping into the single digits (F, not C) and the battery in our '71 VW was a 
little weak.  I placed a drop light with a 40w bulb next to the battery 
overnight and it started right up in the morning.

If you do plan to remove the battery from the car, make sure it won't mess up 
the new radios with the access codes or whatever.

Dave
1618.17it should be OKWOTVAX::16.194.208.3::sharkeyaJames Bond uses LoginnThu Feb 29 1996 17:165
I left mine in the alps for 14 days with the alarm enabled and it 
started up no probs. That was a 1 yr old cavalier.

Alan

1618.18brass and the monkey!VARDAF::CHURCHDave Church@VBE (DTN 828-6125)Fri Mar 01 1996 12:1723
1618.19they warm up nicelyAIMTEC::STDBKR::Burden_dKeep Cool with CoolidgeFri Mar 01 1996 22:497
It might drop down very cold during the night, but if it's sunny and only 
somewhat cold when you go to start the car, it should be okay.

Some people claim turning on your headlights or radio a little before trying 
to start the car helps to warm the battery up.  

Dave