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Dala's Leaf buildthread (2015 Nissan Leaf)

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  • #16
    So Christmas came early, and the previous owner sent me an identical cell from the batch he used to 'fix' the car. It is from USA and has 30 written on it. If I were a betting man, I'd say that the 30 stands for 30Ah measured on one 4V cell. That would be a 33Ah->30Ah, 90.1% degraded cell, which makes sense. I will have to measure it myself to make sure. But at least now I can take a rough reference without taking the car out of service, and compare it against the Italian cell.


    What a complicated origin story, kudos if you are still following the thread

    On a more interesting note, I did another tweak. I intend to switch all incandescent bulbs over to LED to save some electricity. The 10W license plate bulbs got swapped over to Osram 2W LEDs.


    Yellow incandescent on left (although my phone made it way whiter that it actually was), LED on the right

    Doubt I actually get any more range with this mod, maybe half a meter more?

    Comment


    • #17
      half a meter more!?

      Nah, I think you'll go 3/4 of a meter! hahaha

      This is when you find out the disappointment that the 30 means it was his 30th battery or something. I hope not though.
      I stripped my car out so much it now has 49/49 weight distribution.

      Project Diesel Tune:

      https://forums.mightycarmods.com/for...ct-diesel-tune

      My new Daily HA36S Alto Works

      Martin's Kei to success

      https://forums.mightycarmods.com/for...uki-alto-works

      Comment


      • #18
        Happy holidays! The Leaf is happily churning out spruces as I drive, very festive


        I am continuing the LED upgrade, here is the boot space lamp


        And here is the dome light. Both got 31mm wedge LEDs.


        I need all the range I can get now. When the cold hits this hard -12*C, the effective range falls down to 60km-ish. It is such a shame that I cannot prewarm it anywhere, if I could the range would be so much better. I noticed that if I prewarm it and charge right before leaving, the range is the same as autumn.

        It is also quite hard to wash the car at -12, here is what happened when I started the pressure washer :P


        But after heating it in the garage, I could wash and wax it properly


        Oh, and this came in the mail. More on this later

        Comment


        • #19


          I will just leave this here.

          Yesterday we managed to burn a battery-body ground wire from 1970 cadillac (It was literally in flames), so I don't see myself working on cars which works only with electrics.
          1990 Chevrolet Chevy van G20

          1984 Ratty Oldsmobile Custom Cruiser

          1963 Oldsmobile Super 88

          1974 Chevrolet El Camino

          Comment


          • #20
            I found this type of LED was not bright enough, so I built a custom upgrade using a paperclip and some solder
            20181224_142820.jpg

            Comment


            • #21
              Thanks
              The LED was bright enough for pitch dark Finland atm

              I finally caved in, and started renting a garage space 200m from the apartment. It costs 50€ per month, with unlimited electricity. This solved my range anxiety issues permanently. I am limited to 8Amp charging, but that is OK, I only need this space once or twice a week. I should have just done this from the start


              Now I can start to experiment with the timers properly before going on a long trip!

              Oh, and here is a snip of a LeafSpy screenshot, showing the consumption during prewarming.


              On 21*C, with fanspeed on 2, it makes the cabin nice and warm in a matter of minutes. Consumption hovers between 1500-1800W in this state. Green is going in, red out.

              With the 16A charger (3300W), you can charge the battery and still preheat the cabin. Awesome!
              With a 8A charger (1600W), if you preheat, all electricity will be pulled from the battery, and the charger barely keeps up replenishing it.

              Some people on the nissanleaf forums have even reported SoC dropping a few % when preheating, this is probably only in USA where they have only 110V, and a normal L1 charger would only output 1000W+-200W. Thanks EU for 240V

              Comment


              • #22
                This showed up in the mail.



                Now I can start capacity testing the big Leaf cells! I settled on the reasonably priced Antimatter charger/discharger. It can do 10A charge and 7A discharge. I started it a bit more gently, and the test is going to take some time. I set the upper voltage to 4.1V, and discharge down to 3.0V. If I had set the upper voltage to 4.2, it would ofcourse net more capacity, but as long as I do the same for each cell I test, I will come to a conclusion what cell would be best to use in the car.

                Comment


                • #23
                  that looks like an excellent tool!

                  It's going to get you exactly the results you want, which is ideal
                  I stripped my car out so much it now has 49/49 weight distribution.

                  Project Diesel Tune:

                  https://forums.mightycarmods.com/for...ct-diesel-tune

                  My new Daily HA36S Alto Works

                  Martin's Kei to success

                  https://forums.mightycarmods.com/for...uki-alto-works

                  Comment

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