Battery cutoff, good or bad idea?

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  • Ryan Stewart
    I Love Miatas
    • Oct 2003
    • 8978

    #1

    Battery cutoff, good or bad idea?

    My dad has a cutoff on his Chevelle that allows him to unhook the battery so it isnt drained by whatever in the car might still be draining it.

    Now, of course, with the DME, alarm, and radio mine has more to drain it but also more to be affected by unhooking it. My concern is running no alarm and losing all the settings (including the DME tuning) by unhooking it

    Currently I drive it a few minutes every couple weeks to make sure its charged up.

    Anyone know of a way to minimize the risk of a dead battery but still keep all those things alive so I dont have to reprogram everything when I wanna take the E30 out?
    Im now E30less.
    sigpic
  • bimmer8604
    No R3VLimiter
    • Nov 2003
    • 3017

    #2
    trickle charger?

    kyle
    1988 M3, 97 840, 99 XJ
    DILLIGAF

    Comment

    • AdironRider
      No R3VLimiter
      • Dec 2004
      • 3491

      #3
      It cant be that hard to let it idle for a while out in the driveway at night or something.
      Back to my roots

      Comment

      • Dave
        E30 RAT
        • Nov 2003
        • 11675

        #4
        I have killed four autozone batteries by letting them run down from non-use.

        I am thinking about getting a battery cutoff.
        Current Cars
        2014 M235i
        2009 R56 Cooper S
        1998 M3
        1997 M3

        Comment

        • ColdAccord
          R3V Elite
          • Oct 2003
          • 5926

          #5
          lol this is pretty funny, cause i was actually thinking the same thing.

          my dad put a wing nut on the ground to his battery and unhooks it when he's not driving it, but my concern was the same; that his is carbed and has no computer.
          Originally posted by blunt
          can you get me a deal on cases of their (fiji) bottled water? i wash my 02 in that shit

          Comment

          • PeaveyBassist
            No R3VLimiter
            • Sep 2004
            • 3511

            #6
            Get a battery charger and leave it hooked up while youre not driving it.

            Will
            RIP e30 (brilliantrot '91 325i) 11/17/06 Byebye: 8/21/07
            Welcome e30 (brilliantrot '90 325is) 12/23/06
            DaveCN = Old Man
            My signature picture was taken by ME! Not by anyone else!



            Originally posted by george graves
            If people keep quoting me in their sig, I'm going to burn this motherfucker down.

            Comment

            • Nick325is
              E30 Fanatic
              • Oct 2003
              • 1409

              #7
              Bavarian autosport has a trickle charger that won't damage your battery by leaving it connected for long periods of time.
              Attached Files

              Comment

              • Ryan Stewart
                I Love Miatas
                • Oct 2003
                • 8978

                #8
                No power where its parked or else I would.
                Im now E30less.
                sigpic

                Comment

                • 808BMW
                  R3VLimited
                  • Oct 2003
                  • 2910

                  #9
                  I use relays on my aux. batteries, not my main though since I drive my car all the time.

                  If I was going for a switch, I'd just use a big relay that way I don't have to ever remember to turn my switch on/off

                  Comment

                  • James Crivellone
                    Head Janitor
                    • Oct 2003
                    • 6292

                    #10
                    I use a cutoff on mine, although I only hit it when I work on the car, or if I know i'm not going to drive the car for over a week.

                    I have no clock, the alarm saves its settings without issue, and the stereo has no FM presets (satellite adapter saves those)

                    Comment

                    • hamann318is
                      No R3VLimiter
                      • Jul 2004
                      • 3382

                      #11
                      I just unhooked the battery. Granted, I have no motorswap.
                      The BMW 318 is back. With a vengeance.

                      Comment

                      • Tom944
                        Advanced Member
                        • Dec 2005
                        • 150

                        #12
                        With my e30 I just left it with battery hooked on. Car in garage for 4 weeks with clock, dme and big stereo and started without a problem...had a diesel battery by the way.
                        E30 Euro-S50B30 Tracktoy
                        E30 M20B25 Drifttoy

                        Comment

                        • MR 325
                          Moderator
                          • Oct 2003
                          • 37825

                          #13
                          Drive it more!
                          BimmerHeads
                          Classic BMW Specialists
                          Santa Clarita, CA

                          www.BimmerHeads.com

                          Comment

                          • 92 mtechnic cabrio
                            Honesty is not the best policy!
                            • Dec 2003
                            • 4907

                            #14
                            Originally posted by MR 325
                            Drive it more!
                            You're one to speak
                            R.I.P 07/01/09 - 04/23/10 :(

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