Results 1 to 4 of 4

Thread: Battery and fuel issues

  1. #1
    Join Date
    Feb 2007
    Posts
    138
    Total Downloaded
    0

    Battery and fuel issues

    In late March 2012, last year, I parked my Defender Td5 CSW (I am in north Germany). Other than starting the engine every couple of weeks and letting it run for five minutes or so, I didn’t use it until mid-November last year. Had I had it insured, I would have driven it further. Then, in mid-November, I drove it about 30 km during the course of one day, returning it to its parking place.

    Subsequently, I started it less frequently, once about every three weeks. In mid-January, during a spell of pretty cold weather which had frozen one door lock, I went to start it but there wasn’t enough battery power to properly turn it over. The next time, a couple of weeks later, there was no power. It is still in that state. I haven’t done anything yet because I saw no point in getting things working properly then leaving the vehicle standing again, through more cold weather.

    The vehicle has two batteries, both Land Rover originals; the second one runs the fridge etc. and I have a cut-off switch between the two. In May 2011, perhaps 20,000 km ago, both batteries were replaced with new ones. Between that point and March last year, the vehicle was used in a normal sort of way: sometimes every day for two or three weeks; sometimes it stood for three or four days, and stood up to maximum of three weeks at a time (not driven). From the time I fitted new batteries (May 2011) until mid-January this year, the engine started perfectly, first time, every time.

    I had thought that during those months (March 2012 til January this year), letting the engine run for a few minutes was a good thing, and was also enough to replace whatever power I was taking out of the battery by starting it. Also, I thought that a 30 km. run would leave the batteries in good shape.

    My first question: is it likely that the batteries need replacing or is it likely to be just a matter of getting them fully charged, and then they will be OK? (When I get this sorted out I’m going to insure the vehicle and use it for at least a day or two, every couple of weeks.)

    A second question also arises. I have recently been told that if fuel (diesel, in my case) is in the tank for a long time, it deteriorates (can deteriorate?) through oxidation and may become unusable. (Can it also cause damage?????) The fuel that’s in the vehicle system at present has been there since March last year.

  2. #2
    Join Date
    Jan 1970
    Location
    Queensland
    Posts
    7,906
    Total Downloaded
    0
    Hi popotia and I am surprised your batteries lasted as long as they have.

    First off, you need “DRIVE” for at least 15 minutes every time you start the motor, just to replace the amount of battery energy it took to start the motor.

    NOTE, that is “DRIVE” for 15 minutes. Just idling is next to useless as the alternator is only just producing enough power to maintain the vehicle’s electrics while idling.

    You need to drive the vehicle for 15 minutes so the alternator is turning at a much high rate, which will allow it to produce more energy than the vehicle’s electrics need and this additional energy will then be used to charge the battery.

    Now add to the amount of energy needed to be replaced every time you start with the amount of energy that your batteries loose while they are not used for long periods of time. This is known as what a battery self-discharges, and in your case, you really needed to drive for a good hour or more, every time your started your motor.

    I would have a guess and say your batteries are stuffed.

    If you replace them, the new batteries will end up the same way, but, if your vehicle is parked inside near a mains power supply, you should get yourself a small, multi stage battery charger and keep your batteries fully charged during those long periods when not in use.

    If your vehicle is parked outside, you could fit a solar panel in one of the windows that faces south, so it will pickup sunlight for a few hours each day.

    You could use up to a 20w solar panel and you would not need a solar regulator. You could simply connect it to the batteries.

  3. #3
    Join Date
    Feb 2007
    Posts
    138
    Total Downloaded
    0
    Thanks very much for this reply.

    It would have been better if, instead of assuming that the way to go was “parking up” and starting the engine every so often, I had sought advice about the best thing to do. But the past is the past and I have my LR, still with two flat batteries and possibly worse (could there be oil contamination, internal corrosion, sulphated battery?) parked in the street here in Berlin. When my vehicle is running again, later this month, I hope, and has had the necessary service it in any case needs, I shall keep it insured and use it.

    When it was in use, prior to March last year, I would frequently park at, and overnight at, fairly “remote” spots: up a mountain track in Turkey, in a forest in Romania, on a field-side somewhere in Bulgaria, etc. etc., in places where, in other words, I needed to know the engine was going to fire next morning, without problem. I expect to be in such situations again, so rather than risk a future non-functioning battery because of damage I might have caused I prefer to replace both batteries.

    Your guess is that the batteries are stuffed. I take that to mean they cannot be effectively recharged/rejuvenated/ "saved" but are kaputt kaputt, ready for throwing. Am I right?

    Can a workshop tell me, definitively, “the condition of these batteries is such-and-such”?

    Do you think other damage is possible/likely, such as oil contamination, engine corrosion etc? Is there a chance of problems having developed in other vehicle parts/systems through lack of use, other than that 30 km. run?

    And do you think there could be a problem because of the fuel having been in the system for so long?

  4. #4
    DiscoMick Guest
    I suggest you get a multi-stage charger, put it on your batteries for several days, and then see if they hold the charge. You could be lucky (or not).

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Search AULRO.com ONLY!
Search All the Web!