Durandal
Well-known member
Good luck as well!
NiallDarwin said:So we got back into the battery today and found this:
[youtube]https://youtu.be/ZgSd6iJI1u0[/youtube] <-Youtube code not working on my computer. What am I missing?
The BMS isn't looking too clever! Hopefully we can get our hands on another G1 BMS soon
Thanks for all the good wishes. If you have a G1 BMS for sale PM me please.
NiallDarwin said:So we got back into the battery today and found this:
[youtube]https://youtu.be/ZgSd6iJI1u0[/youtube] <-Youtube code not working on my computer. What am I missing?
The BMS isn't looking too clever! Hopefully we can get our hands on another G1 BMS soon
Thanks for all the good wishes. If you have a G1 BMS for sale PM me please.
OK, update on the battery swap/upgrade front:Cor said:...it appeared that the 2015 Leaf that they were delivering had a battery that had already been opened and parts were missing!
So, obviously they did not get that car and are awaiting the next auction where their buyers can find a 2015 or 2016 car that is not already stripped of some parts... To be continued.
Cor said:2011 and 2012 are "G1", you can recognise this from all white connectors.
Wow, yep - I have seen that happen several times. When an interconnect is missing where it should not (the exception is the service disconnect since the BMS has optical communication isolators mid-pack and at each end to allow the voltage to be anything at that point)NiallDarwin said:The BMS isn't looking too clever! Hopefully we can get our hands on another G1 BMS soon
Hi Kris,Kris1 said:Also interested to hear your thoughts on swapping the new double thickness ( https://www.dropbox.com/s/qt88me809t3w5w2/1.25kwh.jpg?dl=0) modules into a G1 battery case.
OK, another update: today I drove (in the downpour) almost 300 miles (round trip) to pick up the battery.Cor said:Today I heard that finally a new 2015 Leaf with very low mileage arrived at the Dismantler, so I will go there Monday to pick up the battery and remove the modules in preparation of the swap next month.
I will ask!Kris1 said:Sounds achievable. Can your buyers access the 30kwh packs? If so what sort of $$ for one?
Cor said:I have one BMS where *every* single one of the 24 ASICs that connect to groups of 4 cells (2 modules), has a crater in the plastic chip where the silicon spewed out in liquid form...
Cor.
Cor said:him: "The battery is sold. We hired a new guy and while I was away last Saturday, he sold your battery.
Thanks for the share. That looks made for short-circuiting. Be careful when you get one!Kris1 said:Yeah, a replacement G1 BMS is what ND is after isn't it? Also interested to hear your thoughts on swapping the new double thickness ( https://www.dropbox.com/s/qt88me809t3w5w2/1.25kwh.jpg?dl=0) modules into a G1 battery case.
It is well known that over-discharge will increase internal resistance of cells, so as long as they don't destroy themselves and come back they might have higher self-discharge and they typically sag deeper than other cells during high current discharge.NiallDarwin said:Unfortunately the low cells are not being brought into line by the BMS so I think they may be damaged. I am seeing a voltage difference of 100mV most of the time. Sometimes down to 60mV but when on full-power it can go up as far as 180mV. So I'm on the hunt for four good G2 modules in NZ to replace the bad ones.
NiallDarwin said:So I got the replacement BMS in ok but some of the cells were pretty much dead-one at about 0.7V and one at about 1.6V! Here's what I did to fix them:
https://youtu.be/mBBk1ABKftg
After charging them as described above they came back to life and the car ran happily So I filmed a reverse spin-turn to celebrate:
https://youtu.be/slJOe7zzEd0
Unfortunately the low cells are not being brought into line by the BMS so I think they may be damaged. I am seeing a voltage difference of 100mV most of the time. Sometimes down to 60mV but when on full-power it can go up as far as 180mV. So I'm on the hunt for four good G2 modules in NZ to replace the bad ones.
I'm still planning a "how to swap batteries" video, basically summarising what I've done and pointing out the easy pitfalls to avoid!
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