Possible sources for battery drain

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  • BMW BMXER
    R3VLimited
    • Oct 2003
    • 2325
    #1

    Possible sources for battery drain

    I parked my car Friday at 5pm. Went to drive sunday morning for work it was dead. Boosted drove to work. (12am) got out of work 5pm. Dead again.

    This morning went to check.. guess what dead again (neighbours all at work, mom not home im screwed.).

    What could be draining my battery? I just got it tested at Canadian tire and they said it checked as "Good" but 50% charge.

    The trunk light (what caused it before) works properly, same with the glove box light. Everything else seems to be off.

    Sold it.
    Tags: None
    • AdamF 88iS
      R3VLimited
      • Oct 2003
      • 2051
      #2
      If you can get your hands on a tester, what I usually do is hook up the tester then pull the fuses out one at a time until the draw reading on the tester goes down.
      Adam Fogg- '88 M3

      Common sense- It's the new 'gifted'

        Comment

        • BMW BMXER
          R3VLimited
          • Oct 2003
          • 2325
          #3
          Thats a good Idea. I do have a tester.

          Sold it.

            Comment

            • Streetspec_iS
              E30 Mastermind
              • Oct 2003
              • 1622
              #4
              could be alternator problem, not charging the battery?!
              sigpicM42 Brigade ... Throwing craze in the 318

                Comment

                • 325is_e30
                  E30 Addict
                  • Oct 2003
                  • 567
                  #5
                  i had the same problem, once i tightened down my alternator belt it never went dead again. your belt might be sliping

                    Comment

                    • BMW BMXER
                      R3VLimited
                      • Oct 2003
                      • 2325
                      #6
                      My belt does squeel when its super cold. More things to add to the list. At least its warming up.

                      Sold it.

                        Comment

                        • Mystikal
                          Moderator
                          Wheel Fitment Expert
                          • Nov 2003
                          • 9602
                          #7
                          Mike (koncise) had the same problem, and after a long struggle finally traced it back to the system. Unplug the amps from the battery completely and do the same thing to check.

                            Comment

                            • BMW BMXER
                              R3VLimited
                              • Oct 2003
                              • 2325
                              #8
                              My system has been in my car forever though. I had parts of it before I even had the car. Why would it act up now?

                              Also when driving around yesterday I didn't have it on.

                              Sold it.

                                Comment

                                • Mystikal
                                  Moderator
                                  Wheel Fitment Expert
                                  • Nov 2003
                                  • 9602
                                  #9
                                  Originally posted by BMW BMXER
                                  My system has been in my car forever though. I had parts of it before I even had the car. Why would it act up now?

                                  Also when driving around yesterday I didn't have it on.
                                  Same thing with him. He hasn't changed the setup at all in quite a while. And it drains with the system off obviously, since it drains as the car is off.

                                    Comment

                                    • BMW BMXER
                                      R3VLimited
                                      • Oct 2003
                                      • 2325
                                      #10
                                      What part of the system was it? I cant just take it out. That would be sacralige.

                                      Sold it.

                                        Comment

                                        • Mystikal
                                          Moderator
                                          Wheel Fitment Expert
                                          • Nov 2003
                                          • 9602
                                          #11
                                          He said he disconnected "it" from the battery. I'm guessing likely all amps and he left the HU in.

                                            Comment

                                            • BMW BMXER
                                              R3VLimited
                                              • Oct 2003
                                              • 2325
                                              #12
                                              R.I.P my battery.

                                              1 year old. Poor little guy.

                                              Sold it.

                                                Comment

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