Howdy, Stranger!

It looks like you're new here. If you want to get involved, click one of these buttons!





Battery Life

diver110diver110 Posts: 67
edited March 24 in BMW
I very recentlyl bought a 2000 540i (the car was placed in service in 10/99). It appears to have the orginal battery, making it almost four years old. There appears to be a coding to it. If a green dot appears in a window it is fine. A black dot means charge. A yellow dot means replace. Assumnig I am looking at the right thing, the window has a black dot. I gather BMW puts the battery in the back to keep it away from engine heat and give it longer life. Should I replace the battery? What kind of life do people generally get from their batteries? Thanks.
«134

Comments

  • bretfrazbretfraz Posts: 2,021
    There's no sense in tempting fate here. Have a new one installed ASAP.

    4 yrs isn't bad for a battery but everyone's experience is different so there's no real accurate gauge of battery life.
  • kinleykinley Posts: 854
    94 Towncar, 106,000 original battery

     95 T Bird, 66,000 original battery
  • swschradswschrad Posts: 2,171
    there is apparently enough anti-theft in the radio, and enough computer interlock elsewhere, that just pulling a battery out, taking it to the store, bringing back a new one and installing it leads to nasty results... mostly the radio asks for a security code you don't have, I seem to remember some have claimed other issues, like starting trouble.

    this is one thing you should be able to avoid if you have the dealer change it out, they should be cognizant of the issues.

    but you should figure out what your security codes are on radios, etc. and write them down now, while you can. see the dealer if you can't find the instructions.

    -0-

    although it appears I don't have similar issues in my detroilet iron at first research, I am going to whip up a standby voltage regardless before I hook up my trailer brake controller direct to the battery. this will consist of a 12v gel cell hooked through a lighter plug to keep the radio, etc. memories alive while I fool around with the post connectors.

    there are "radio save" kits of a lighter plug and a 9-volt battery clip in auto parts stores. but if you have a hood, trunk, or door light on while you are changing that battery out, the 9v job will be dead in seconds. your general 1.5 CP bulb draws something just over an amp, so I figure a 6 AH battery from one of my computer UPS systems will do just fine.
  • jc1973jc1973 Posts: 63
    MY OLD 94 RANGER WAS8 YEARS OLD WHEN I TRADED IT HAD 165000 MILES ORIGANIL BATTERY MY 96 GRAND AM WITH 83000 MILES STILL HAS ORIGINAL BATTERY JUST DEPENDS ON CAR I GUESS
  • alcanalcan Posts: 2,550
    96 Riviera, 66,000 miles, original battery.
  • nippononlynippononly SF Bay AreaPosts: 12,687
    last year (owned since new) 6 years old, 115K miles, original battery.

    2013 Civic SI, 2009 Outback Sport 5-spd (stick)

  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 44,404
    Depends on the car, battery placement and what the car's accessories need, too. A big car with lots of accessories in a very hot or very cold climate might tax a battery a lot more than the "average" car. Also, cars like Saab that put the battery next to the turbo (duh!), well, every two years was more than enough. Mayby a GEL battery in the trunk could go 8 years.

    Case in point---my Benz battery is over 5 years old, works fine day in and day out, but when I took it up to snow country it could not crank beyond 30 seconds (in 10 second bursts). So for 95% of my use it was good but for that 5% is was useless.

    I think 4+ years is a good time to switch out the battery if you MUST have absolute reliability under all conditions.

    MODERATOR

  • fleetwoodsimcafleetwoodsimca Posts: 1,518
    Glad you said that, Shifty! I was fixin' to say something to the effect that here in Colorado, I can't hardly keep batteries for "extended" lengths of time. I suspect it has to do with the temperature extremes, and other factors as well. What I hate is my own tendency to push my (battery) luck, and pay for it royally in hardship!
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 44,404
    It's interesting to note that extreme HEAT also hurts battery life. I've read that battery life sayh in Phoenix would be less than say in San Francisco (unless of course they STEAL your battery in SF, but that's another thread.)

    MODERATOR

  • cutehumorcutehumor Posts: 137
    my autozone battery lasted 4 yrs and 3 months and 47k miles. Here in Memphis, the summer temps get up to 95+ heat index of 110 F
  • swschradswschrad Posts: 2,171
    the arizona dealers take out and ship back the OEM batteries, and put in ones with good old filler caps, so the extra evaporation can be dealt with.

    I've got a couple phoenix-area transfers in the office, but have not asked them to raise their hoods yet to verify this... ;)
  • fleetwoodsimcafleetwoodsimca Posts: 1,518
    And it DO sound a little far fetched, even if Consumer Reports said it. »:o]
  • kinleykinley Posts: 854
    One is 9 years old and the other 8. When thirsty, give em a drink.
  • armtdmarmtdm Posts: 2,057
    For under $75 99% of the time it is not worth the hassle to leave it in and be stranded somewhere and have to buy one under duress. Just replace it every 4 or so years.
  • Mr_ShiftrightMr_Shiftright CaliforniaPosts: 44,404
    It's one of those items on a car that isn't worth "stretching". Unlike some components, a battery is so critical to a car's function that without one you are basically sitting in a huge flower box. (unless of course you drive a diesel, then you don't need a battery as long as you never shut the engine off).

    MODERATOR

  • swschradswschrad Posts: 2,171
    somebody posted a few weeks ago that today's electronic regulators will die right now if the battery is disconnected. which could take the alternator down, depending on the type of failure.

    sure a far cry from chrysler's introduction of the alternator, in which they took the battery out of a test car, and drove it coast to coast to coast to show the alternator provided more power than anything before.
  • fleetwoodsimcafleetwoodsimca Posts: 1,518
    So just exactly how do all of us experts rate the batteries? Which brand or brands is/are best? Given the chance to buy the brand of your choice, what is it and why?
  • armtdmarmtdm Posts: 2,057
    The Optima gel batteries are the best, can be placed upside down if necessary but way overpriced and the waranty is no better then the top of the line of the same brand, non gel.

    For me an AC Delco maint free (no caps/plugs to check level etc) and if no Delco available for engine then the best top of the line (non gel) highest CCA one I can find that fits the case at Advance Auto or Auto Zone . Go for the warranty (by that I mean the replacement free part of the warranty) the prorated portion is worthless. So a 2 year replacement free 4 year prorated is better then a 1 year replacement free with 5 year prorated.
  • fleetwoodsimcafleetwoodsimca Posts: 1,518
    I too have had very good results with AC Delco batteries, and they seem to be available for most everything. I understand that Interstate may be pretty durable. Most anything made by Exide is a good, quality grade of battery as well.
  • cutehumorcutehumor Posts: 137
    It was a good price only 29.99 plus tax. It's the standard with 1 year free replacement. My car is 11 years old so i don't know if a 5 year battery is worth the investment. lol
    otoh, the battery is made by Johnson controls which also makes the interstate batteries. I was thinking that maybe it might be a good deal.
«134
This discussion has been closed.