The unknown central module is the Battery Heater Control. See: 1:13:45 The website below also gives a thorough explanation of the Nissan Leaf battery pack. It is offered by an instructor at Weber State University. The total length of the video is slightly under 2 hours. ruclips.net/video/vYQJatWpBXY/видео.html
Got three Nissan 24kWh packs, bought the individual modules from a company that resells EV batteries. Put them in 14S and use a Batrium WM5 Bms, its now running for nearly 3 years. Next project is a HV EV battery which does not need to be disassembled
Nice, i currently suck 400a from my 24kwh leaf with an upgraded inverter. For a year i have daily belted it do and from work , constant repeated 400a for 5 seconds usually. 0-60 Mph in 6.3 tested on draggy , makes for a fun leaf. We will see when the cells decide to call it a day.
Very cool thank you for this great video, I need to do the same for my car, my only question where you bought these plastic bin to store the batteries in it? would appreciate if you can link me up to these as it will make things easier for me
When disassembled, there were 2 heating plates on top of the rear batteries as well as heating plates on the sides of the central batteries. Are heating plates also used on the front batteries? Thanks in advance for the response.
Am i right to assume since each module is 2s2p what the middle contact of each module is for balancing? If you measure the volage across the middle contact is it half of the modules voltage?
Thanks and yes it is working fine. I ended up using 9 of the modules for that. But since I “only” have 250w and limited sun here I’ve so far passed about 130 kWh through them. (I have a Victron MPPT that tracks this). I have a short video on how that project went
All I remember is that they are more limited in Amp draw compared to the cells in the BMW i3. The modules are 48s1p. But every modules internal cells are 2s2p. So that should be 96s2p on the total cell count. Cells go to ~4.15 volt (398v). I believe my modules had about 370Wh of remaining capacity. But it was a long time ago I did that disassembly/ study.
Thanks Allan! I actually got a 6s Mesa BMS from eBay, Germany. They had one with ~45A discharge and about half of that for charging. It was about impossible to find a 6s with Bluetooth so I went with this one without. But the low voltage cut out is TOO low, so I have a Victron BP 100 to protect from that. I think I recorded almost the entire “build” of this battery, so eventually I’ll edit that. www.ebay.com/itm/6S-BMS-250A-60A-PCB-Protection-Board-Li-ion-Battery-E-Bike-E-Bike-24V-3-7V-4-/254643651747?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=707-127634-2357-0
The unknown central module is the Battery Heater Control. See: 1:13:45 The website below also gives a thorough explanation of the Nissan Leaf battery pack. It is offered by an instructor at Weber State University. The total length of the video is slightly under 2 hours.
ruclips.net/video/vYQJatWpBXY/видео.html
Got three Nissan 24kWh packs, bought the individual modules from a company that resells EV batteries. Put them in 14S and use a Batrium WM5 Bms, its now running for nearly 3 years. Next project is a HV EV battery which does not need to be disassembled
Nice, i currently suck 400a from my 24kwh leaf with an upgraded inverter. For a year i have daily belted it do and from work , constant repeated 400a for 5 seconds usually. 0-60 Mph in 6.3 tested on draggy , makes for a fun leaf. We will see when the cells decide to call it a day.
Very cool thank you for this great video, I need to do the same for my car, my only question where you bought these plastic bin to store the batteries in it? would appreciate if you can link me up to these as it will make things easier for me
When disassembled, there were 2 heating plates on top of the rear batteries as well as heating plates on the sides of the central batteries. Are heating plates also used on the front batteries? Thanks in advance for the response.
The one I’m working on is hell trying to open because it’s got black silicon sealer
Am i right to assume since each module is 2s2p what the middle contact of each module is for balancing? If you measure the volage across the middle contact is it half of the modules voltage?
i think the batteries are wired in series, 8:10 you can see how thats done
Can I make 12v from those cells to use it as car battery regular car battery? Do I need 4 cells only ?
i think you can if you get a powerful enough bms
can you do more citycoco videos?
like upgrading it
i also have citycoco pretty good machines
It was a fun scooter but I sold it after making these vids, so unfortunately I don’t have any more plans for that at the moment.
Hi, was there any structural difference between the cells in the back vs in the front?
No they was all the same. Same modules/ cells.
For what its worth, thats not a repair, they come from the factory like that :)
That's pretty cool. Do you have your new battery storage system working now?
Thanks and yes it is working fine. I ended up using 9 of the modules for that. But since I “only” have 250w and limited sun here I’ve so far passed about 130 kWh through them. (I have a Victron MPPT that tracks this).
I have a short video on how that project went
So you know how much current these cells can discharge? Like what's the max? Also, what configuration was the lead pack in?
All I remember is that they are more limited in Amp draw compared to the cells in the BMW i3.
The modules are 48s1p. But every modules internal cells are 2s2p. So that should be 96s2p on the total cell count. Cells go to ~4.15 volt (398v).
I believe my modules had about 370Wh of remaining capacity.
But it was a long time ago I did that disassembly/ study.
@@BasinBjorn ty
What kind of BMS do you want to use ?
Great video Bjorn 👍
Thanks Allan! I actually got a 6s Mesa BMS from eBay, Germany. They had one with ~45A discharge and about half of that for charging. It was about impossible to find a 6s with Bluetooth so I went with this one without.
But the low voltage cut out is TOO low, so I have a Victron BP 100 to protect from that.
I think I recorded almost the entire “build” of this battery, so eventually I’ll edit that.
www.ebay.com/itm/6S-BMS-250A-60A-PCB-Protection-Board-Li-ion-Battery-E-Bike-E-Bike-24V-3-7V-4-/254643651747?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=707-127634-2357-0
As of right now I’ve put about 28 kWh through that bms and it seems to still work good. My battery pack is 3,3 kWh so a few cycles.
@@BasinBjorn I have more questions but I won't prior into your upcoming videos so I will just lean back and enjoy. Thanks Bjorn
How can i bying this batrry any one help me please
Checking voltage won’t get you far. You need to check capacity which is a daunting and lengthy process.
Well this is a disassembly video
Get rid of the music! It interferes with what you are saying.
Crikey, buy some proper tooling before f**king around with high voltage DC.
And for the sake of your eyes, wear some eye protection.