goldbrick
Well-known member
I'd report these posts but I think that cat is out of the bag. Personally, I'd rather see Ed come back than more of this drivel.
dsh said:Im the Phoenix class-action representative from the Nissan Leaf battery degradation class action lawsuit that was filed against Nissan and I still own my 2011 Nissan Leaf w/ 101,800 miles and am down 6 capacity bars on the second battery which was replaced under the capacity warranty. I just spoke to Nissan customer service and they lowered the price of their 24 kilowatt hour battery to approximately $5,495. They're 40 kilowatt battery is now $12,495. They are discontinuing the 30 kilowatt hour battery and replacing those cars batteries with their 40 kilowatt hour battery. They have still yet to announce this which is odd and they will not install a 40 kilowatt hour in a 24 kilowatt hour equipped car. I told them about Fenix Power and that Fenix power will be the best solution because your batteries with a small subscription price every month will be kept at maximum capacity and you'll always be at 12 capacity bars.. Can't Wait!
No BMS?powersurge said:I am into making battery packs for EBikes and know that if you are set up to make battery packs, it does not require years of research to make any size you want. just make them and connect them together... Electric battery packs are nothing more than soldering, and connecting In-Parallel - to increase capacity or In-Series - to increase voltage.
WetEV said:No BMS?powersurge said:I am into making battery packs for EBikes and know that if you are set up to make battery packs, it does not require years of research to make any size you want. just make them and connect them together... Electric battery packs are nothing more than soldering, and connecting In-Parallel - to increase capacity or In-Series - to increase voltage.
LeftieBiker said:WetEV said:No BMS?powersurge said:I am into making battery packs for EBikes and know that if you are set up to make battery packs, it does not require years of research to make any size you want. just make them and connect them together... Electric battery packs are nothing more than soldering, and connecting In-Parallel - to increase capacity or In-Series - to increase voltage.
Not always. A cheap Chinese BMS is about as likely to cause pack failure as to avert it. There is also no BMS now in my Vectrix maxi-scooter.
Lothsahn said:On my RC airplanes, there's a balance connector and a main connector. The charger both charges the pack and monitors individual cell voltages, balancing the cells. In short, the charger is both a charger and BMS in a single unit. Is this what's happening with your Vectrix?
powersurge said:I am into making battery packs for EBikes and know that if you are set up to make battery packs, it does not require years of research to make any size you want. just make them and connect them together... Electric battery packs are nothing more than soldering, and connecting In-Parallel - to increase capacity or In-Series - to increase voltage.
coleafrado said:Lothsahn said:On my RC airplanes, there's a balance connector and a main connector. The charger both charges the pack and monitors individual cell voltages, balancing the cells. In short, the charger is both a charger and BMS in a single unit. Is this what's happening with your Vectrix?
As far as I know from his YT videos, the Vectrix has no BMS whatsoever. LeftieBiker simply balances it manually once a month or something like that.
powersurge said:I am into making battery packs for EBikes and know that if you are set up to make battery packs, it does not require years of research to make any size you want. just make them and connect them together... Electric battery packs are nothing more than soldering, and connecting In-Parallel - to increase capacity or In-Series - to increase voltage.
There is way more to automotive battery engineering than that, and you know it. Mechanical, electrical, and thermal stresses that can be "safely" ignored at the 0.5 kWh e-bike scale are hugely expensive and time-consuming to address at the scale of 25-80 kWh automotive traction batteries. You won't even find a single automotive pack that uses directly soldered cells in 2020 - cells are linked via busbars attached either via ultrasonically-welded wires (Tesla) or copper bolts/nuts (Nissan) or plain old wiring harnesses (LG/GM).
powersurge said:I was stating that someone who has the knowledge of how the Nissan packs are made, AND has the equipment to service those things..... AS are Nissan dealers, which are common, do not have to spend years on research and development of a darn battery pack. There is no magic in those things that a Nissan trained mechanic cannot do.
coleafrado said:As far as I know from his YT videos, the Vectrix has no BMS whatsoever. LeftieBiker simply balances it manually once a month or something like that. Obviously an unacceptable solution for a full-scale EV.
Lothsahn said:....
That would explain it. NiMH batteries don't require a BMS as they get safely balanced via a slow top-off charge. I'm not aware of any rechargeable Lithium battery anywhere that is > 1 cell that can charge without a BMS. It's not a matter of scale, it's a matter of chemistry. Even small RC airplane/helicopter batteries require balancing (if they're > 1 cell).
Lothsahn said:I'm not aware of any rechargeable Lithium battery anywhere that is > 1 cell that can charge without a BMS. It's not a matter of scale, it's a matter of chemistry. Even small RC airplane/helicopter batteries require balancing (if they're > 1 cell).
That would explain it. NiMH batteries don't require a BMS as they get safely balanced via a slow top-off charge. I'm not aware of any rechargeable Lithium battery anywhere that is > 1 cell that can charge without a BMS. It's not a matter of scale, it's a matter of chemistry. Even small RC airplane/helicopter batteries require balancing (if they're > 1 cell).
Sorry, I guess I wasn't particularly clear. As far as I know, LeftieBiker is the only guy with a Leaf-module-powered Vectrix:
I've learned from someone that allegedly Fenix Power has gotten an eviction notice. They pointed me to https://mcsop.permitium.com/sop/searchpage which does currently list an eviction served to FENIX POWER, INC. (DEFENDANT) as of 2/5/2020. I had to look up https://en.wikipedia.org/wiki/Mecklenburg_County,_North_Carolina.dsh said::mrgreen: https://fenix.systems/news/fenix-news/2019/11/14/fenix-power-moving-into-new-facility?mc_cid=62bc08ead7&mc_eid=593d3cb615
Re: their Harrisburg NC location, are you talking about the below as listed on their web site (https://fenix.systems/) and https://fenix.systems/blog?SalisburySam said:joeriv said:Seems to me that if a “Leafer” from the Charlotte NC area could pay them a visit and write up his impressions, that could put some meat on the bones.
I’d love to do that and I’m about 35 miles from their Harrisburg NC (bedroom community on the East side of Charlotte) location. That’s sadly about 5 miles out of range for my 2012 SL without a refueling stop. But I like the idea and I could easily make it in my other EV. I’ll try to set up a meeting there. In case that doesn’t work, even a drive-by might be helpful.
They’ve recently contracted a 7000 sq.ft. facility in another part of Charlotte though currently it’s only an empty building. Baby steps, apparently. Still mildly optimistic but would really like to see a retrofitted LEAF rolling around the area sometime, maybe even mine.
I'm alarmed that he believes they are "building new battery packs" rather than "claiming they will be able to ...".Ryland Erdman: Fenix is building new battery packs inside of used battery cases and installing them in older Leafs.
Makes sense to use the largest case made that fits the older body style.
LeftieBiker said:If this is going as it appears, it's sad. I don't like to see sincere people fail, and it was a good idea that just may have been swept aside as it became possible to install higher capacity Leaf packs instead. If they had a bolt-in 40kwh pack with TMS ready to test it would still be a good idea.
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