SHENZHEN FACTORY TECHNOLOGY battery packs- is it real?

[Riore]

@Riore any news about your pack?

My 68kWh pack is going very well, zero issues so far with it.

 

[MikeinPA]

My daughter's 2018 40kWh also got one bad cell. Still trying to figure out which will be the best way, change one or the entire pack

Should still be under warranty. What was the original use date of the vehicle?

What I did was buy new cells and replaced the bad ones, following all the manufacturers instructions. I balanced all cells at 4.000 +/- 0.003 volts; this way the new cells are slight lower than the the other cells at full charge, and higher at discharge. Finding someone to do this, or doing it yourself, is the biggest challenge.

This way if you need to sell the car, you can do so with worrying about any issues down the road with the next owner blaming you for faulty repairs.

 

[ginetto]

My daughter's 2018 40kWh also got one bad cell. Still trying to figure out which will be the best way, change one or the entire pack

open e new thread asking for opinion. I've mine, but I do not want to add more noise

 

[Steelcity]

Should still be under warranty. What was the original use date of the vehicle?

What I did was buy new cells and replaced the bad ones, following all the manufacturers instructions. I balanced all cells at 4.000 +/- 0.003 volts; this way the new cells are slight lower than the the other cells at full charge, and higher at discharge. Finding someone to do this, or doing it yourself, is the biggest challenge.

This way if you need to sell the car, you can do so with worrying about any issues down the road with the next owner blaming you for faulty repairs.

Mike, is there a thread about u replacing ur cells? If so can u post a link? If not where did u source the cells from? And is ur pack still original ? TIA

 

[MikeinPA]

Mike, is there a thread about u replacing ur cells? If so can u post a link? If not where did u source the cells from? And is ur pack still original ? TIA

No. There is a thread about Nissan not recognizing my warranty claim! https://mynissanleaf.com/threads/weak-cell-44-in-2013-leaf-where-in-pack.30704/

There is plenty on line. Follow the manual completely. Some hints--the pack safety plug latch is tricky--take your time. Bring the pack to a known cell voltage and do so with replacement cells as well before opening the pack. A narrow drywall taping knife with hammer end that has been sharpened can be driven around the seal PDQ without messing the case up. The same tool "floats" nicely to skive up the remaining gasket material by hand. Warm up the new sealant and use a powerful electric caulking gun. Dry fit the case lid and check for clearances--because 2 tubes of very expensive sealant will barely do it.. There is a leak test that must be run, use a cheap manometer, make up a plug from a compatible drain plug, and a Ryobi electric air pump. I always retorque any connection involving copper after 24 hours because the copper eases away from the first torque. Honeywell Salisbury gloves with leather over gloves. Make a lifting frame for the car out of 4X6 treated and use 4 cheap jacks to lift the whole vehicle straight up. And so on.

The trick is finding a good cell.

Overall--way more fun than working on ICE engines. No smells, you hands stay clean, etc. The 2013 Leaf is very well made--Nissan did a great job except for the cells. If you are going to do a cell swap, start a new thread and we can have some fun.

 

[lley]

Yaste's 63kwh entire pack, remove original cells, and install the CATL cells with connections around US$6200 includes all fees.

My daughter's 2018 40kWh also got one bad cell. Still trying to figure out which will be the best way, change one or the entire pack

 

[ginetto]

anyone have feedback about CVC https://cvcbattery.m.en.alibaba.com/ they have kits too.

 

[MikeinPA]

Yaste's 63kwh entire pack, remove original cells, and install the CATL cells with connections around US$6200 includes all fees.

 

[ginetto]

alarmed by this webpage down I asked clarification and:

Karray Yang2024-09-30 16:20
Morning we are developing this website as well
www.yastetech.com

Karray Yang2024-09-30 16:21
The domain will reactive after our National Day holiday
www.yaste.tech

 

[MikeinPA]

My 68kWh pack is going very well, zero issues so far with it.

Do you know if that has the BMS from a 62 kwh pack?

 

[Riore]

Do you know if that has the BMS from a 62 kwh pack?

Yea it seems to be a 62kWh BMS.

 

[MikeinPA]

From what I understand, the 62 kwh BMS should work fine with a standard MITM can bridge and up to about 70 kwh of cells. It is the mismatched packs out there with battery capacity > 120% of the original BMS's application that are going to have issues.

The temperature turtle was unrelated to the battery?

 

[Riore]

The temperature turtle was unrelated to the battery?

I haven't done another fast charge test to confirm but I do believe the battery wasn't overheating, in the service manual it said the turtle can come on from inverter over-temperature or motor over-temperature.

I am trying to find the motor and inverter temperature on leafspy. I can see one one page that I assume is motor temperature.

 

[Ianlighting]

From what I understand, the 62 kwh BMS should work fine with a standard MITM can bridge and up to about 70 kwh of cells. It is the mismatched packs out there with battery capacity > 120% of the original BMS's application that are going to have issues.

The temperature turtle was unrelated to the battery?

MITM? I’m guessing man in the middle, but just haven’t seen that name applied here so thought I should check. If I’m right, that’s fine, I understand the can bridge is placed inline from the installation videos I’ve seen.

 

[JMTUT]

I haven't done another fast charge test to confirm but I do believe the battery wasn't overheating, in the service manual it said the turtle can come on from inverter over-temperature or motor over-temperature.

I am trying to find the motor and inverter temperature on leafspy. I can see one one page that I assume is motor temperature.
View attachment 5327

Just bought a ZEO SV leaf. Only has 27 miles range. I am looking at spending $7600 US for a 62kWh pack. Have you had to do anything to your car other than reset the code using leafspy? I am curious if Vivne will supply the spacers that seem to be required with the battery pack. Thanks for trailblazing. I hope to have essentially a new car with this upgrade.

 

[Riore]

Just bought a ZEO SV leaf. Only has 27 miles range. I am looking at spending $7600 US for a 62kWh pack. Have you had to do anything to your car other than reset the code using leafspy? I am curious if Vivne will supply the spacers that seem to be required with the battery pack. Thanks for trailblazing. I hope to have essentially a new car with this upgrade.

The spacers and longer bolts were supplied by Vivne with the pack. The swap was very easy to do and all I had to do was reset the error codes afterwards and it worked perfectly.

The only issues I ran into was how to remove the plugs properly as they have a little trick to them that stops them from falling off if they came loose, a lack of instructions as there were 2 sizes of bolts supplied but I figured it out, at he rear of the car you need to use the thinner ones to drop the bracket down.

 

[MikeinPA]

Just bought a ZEO SV leaf. Only has 27 miles range. I am looking at spending $7600 US for a 62kWh pack. Have you had to do anything to your car other than reset the code using leafspy? I am curious if Vivne will supply the spacers that seem to be required with the battery pack. Thanks for trailblazing. I hope to have essentially a new car with this upgrade.

Before that, you should read this and other threads on these packs very carefully. Riore has put a large pack into an early model Leaf, and this may turn out OK, because a) the older model Leaf does not pull as much amps as new versions, b) there may be a stock Nissan 62 kWh BMS/LBC in there and c) there are proven CAN bridges that will adapt a 62 kWh BMS/LBC to the early Leafs.

Anyway, be advised that you should not resell the vehicle after modifications, park it inside, etc. You taking a risk with your own vehicle is up to you--selling it on to a new buyer, not so much.

And yes, it is terrible we can't just buy a new or refurbished pack from Nissan at 200$/kWh. Very wrong. But using parts of unknown quality is not a solution when one of the failure modes is a lithium battery fire.

 

[MikeinPA]

Too bad there is not a simple repack kit for the 24 kWh Leafs. Something with about 28 kWh of VDA 355 modules rated for 400 amp discharge, and new harnesses.

 

[JMTUT]

Too bad there is not a simple repack kit for the 24 kWh Leafs. Something with about 28 kWh of VDA 355 modules rated for 400 amp discharge, and new harnesses.

There is a 40kWH version from Vivne. But the cost difference is ~$1000 for potentially 30% more range

 

[noelho]

I'm saving up for the 50kWH version, as that is the largest size that doesn't require spacers. The foreign exchange rate from USD to NZD is painful though. 60% bump up in price!