Amazing work! I’m also impressed with LEAFSpy running on the car’s headset.

Wow... How clever is that; Turn the fan on and draw off the charge rate... Very cool. Thank you Dala (I'm in mountain country - BC Canada)

Excellent analysis!

Very informative video thanks for sharing.

Daniel, thank you for this. I did some in-depth analysis about the LEAF's heat dynamics a couple of years ago - (search "Leaf vs. long journeys - Can it take the heat?"). I think it would be very useful even simply to allow owners to choose a reduced peak charging power (25, 30, 35, 40 kW) for trips that require 2, 3, 4 DC charges. Requesting a slower charge (one that takes ~60 minutes) during a meal stop is the right choice for avoiding unnecessary heating. Final DC charge of the day can of course run a bit hotter since there's no "next charge" to be negatively affected. => Just having the ability to set a more modest power level is already a big help in managing long trips. Can I also recommend an app which very simply communicates "heat gain" during driving, to help owners manage their driving speed (power) in order to loose net temperature while driving between DC charges. I'd recommend a simply colour code on the phone screen (orange for medium gain, red for high gain), or "heat loss" (green for medium loss, blue for high loss). Should ideally be a function of sensor temperature delta over the previous few seconds, and / or net temperature delta per 1% (or 5% or 10%) of SOC use.

Another great video Daniel. Clearly describing thermal problems of LEAF batteries. It would be good if you could dial back charging rate on a 62kWh LEAF. Cheers from Australia

Another good, well researched Leaf battery video. I am a 24/30kWh Leaf owner and fan of the car but only as a City Car going to and from the shops, station, school etc which is 90% of most people's journeys. I sympathise with 40/62kWh hour owners who thought the Leaf could be an Intercity car. For Intercity either go by train or have a Tesla or sadly use your old smelly petrol car. The problem however is not just a Leaf owner problem but society in general because what to do with all those degraded cars/batteries? For me the 4th unseen solution on the list of options is to make an autonomous or hybrid solar systems using either the whole car as a battery bank using V2H technology or just the batteries alone if they have been removed. We have developed our own crude low cost system splicing into the main high voltage cable of the car (safely) but we can do better in the future.....over to you Daniel:)

Can a vent not be made under the rear seat - or just a hole cut in that body/chassis section? Then 10 miles or 15km from the next rapid charger, the rear aircon fans be turned on towards the vent, passively cooling the rear battery modules? Is it the Ioniq that has something similar?

Has anyone tried fitting a Prius Cooling system which would need watertight inlet outlets to access the battery?

3:12, very good visualization. I've looked at what would happen with cooling if the air inside the pack was "moving". Add a fan, 5-10W in the midle, and in theory the passiv cooling will double. Now it is apporx 200W/k dT, with a small airblow inside the pack it will double as you do not have only the convection to rely on. A småll airflow inside will spread the temperature more even, and degradation will drop for the rear pack. As the cooling is also better between charging session, you could charge a bit faster. I've upgradet my 2012 Leaf with a 40 pack, and have fans ready to do a test. But no time ufortunaltely. Looks like you are opening packs now and then, so nest time, add a fan next time for a test.

corect me if i am wrong there is Somme sort of air cooling coming in the bat pac a cheap solution would be to ad some coold air from the ac and also to install extracting fans like on a pc whit a hose syst to the exterior you could even use the hot air flow to heat the cab in winter to reduce power consumption.

I just discovered your channel. I just bought a used Leaf and have started to get experience with Leafspy and was surprised to see Leafspy displayed on the Navigation screen. Do you have a video on how you accomplished that.? And would that be possible on all year models of the Leaf. Mine is 2012.

I'm curious how much heat in 100kw Chademo. At least going from Munich to Berlin there're a few

Hi Dala, I just discovered this helpfull video of yours. Does the fan trick (reducing to 35kW QC power) work effectively with my 2019 e-NV200 EVALIA ? Also to mention, I had the MUXSAN COMBO CCS 2.0 install in January (in place of my yazaki). I recently observed that when COMBO QC charging (e.g. at Tesla stations), the rapidgate effect is bypassed, meaning my battery starts over heating. So scary, I once had to wait an hour before resuming my trip. On that day, I subsequently stuck to CHADEMO when rapidcharging.

Great video. Thank you. Do you know if the 2022 62kwh model suffers from this also?

Would love to know if your fix would work with a 40kWh env200

Wow! Very interesting. You limit charging power on ChaDeMo through software mod and your can bridge?

Thanks Daniel very interesting video. I have a 2018 40kWh Leaf. I’m not sure how I would get the modified software. I didn’t have the updated software from Nissan. Is the updated software to reduce the rapid charge rate going to be available through them or another source. I’m not sure from your video which is the case.

Is is possible to manage individual battery stacks so you utilize the rear stack less and push less power into that stack while charging to keep the temperature closer to that of the other batteries?

Hi Dala, I recently got my dongle and LeafSpy pro to help me monitor the battery temperature among other things. What is the ideal range of temperature to keep, when on long trips ? (odometer is 75k km and SOH is 91.3)

I have a CAN bus from Muxsan installed and have my charging speed via override switch set to 30 kw. I see you have it set to 35. do you recommend I set it to 35 or leave it to 30? I did the math and at 30 I don’t loose much time compared to the standard leaf cycle but I wonder if the slightly longer charge time is worse then then if I set it to 35. i also have a power limiter (turtle mod 50 horsepower) programmed in and regen off. Im still playing around with stuff and any advice would be greatly appreciated because always having a laptop on long road trips to adjust things in the CAN is inconvenient. A standard setting would be preferable.

Another thing, Dala. You mention that the e-NV200 has thermomanagement of the battery. Is this the case for just the 24kWh version or also the 40kWh version like mine ? (7 seater EVALIA).

You didn't mention that in options, but muxsan added second battery pack in boot, which helps also :)

Great feature. I love the idea of having the ability to moderate DC speeds. Have any of your customers tried this in combination of running a ducted fan over the top of the battery? Another idea, build a leafspy like software which is android auto compatible (and sell it on play store) so for those of us with the other headunits can get a Leafspy on video display like what you showed in the video.

Could you make a CANenhancher for the non TEKNA's of the 62kWh's so they also can charge at "100 kW" as the Tekna?

Traducción al español? Me gustaría poder limitar la carga Tengo un leaf 40kw ¿puedo deslimitar la velocidad maxima?

Followed your link. Says out of stock. Got a waiting list or an alternative source?

Where do You bye This CarPlay.? Do You have a video where you instal CarPlay?

Hi Can you please explain how did you installed aftermarket radio?

Am I correct in thinking the leaf is one of the few electric cars that doesn't have active battery cooling via some kind of radiator/fluid?

Maybe I missed it. How can I get this going on my current LEAF?

Hi, so I have become a pattern as I really like what you are doing. But how do I get this reduced DC charging on my 30kw?

Hi, I know, maybe it's a stupid idea, but can't you make a hole in the front of the battery and the other on the back of the output, connect the air conditioning directly and check if it lowers the battery temperature? the battery heats up when charging, maybe it is enough to manually turn on the air conditioning while charging?

I don't get it, would it work on my 2022 40kwh Leaf original battery or it only works with batteries that have some custom firmware... ? Is there a list of other hidden Leafspy features like this?

Hi Daniel, I am curious. I have a 2015 leaf with i believe a 24 kw battery, but can only get around 80 km on a charge. Is this normal? Can this be improved? Any input we be appreciated.

Where Can I Get the software you made ? Max charge 35 kWh - My car Leaf generation 2 Bat. 40 kw. From 2018 ?

Hi, I'm from Brazil, im driving a 2018 Leaf with 40kW battery pack, and have reported to nissan dealer the problems of battery overheating after just one single quick charge at the 10.000 km service. For my astonishment they told me that car is for urban use and quick charge is not recommended. After this service shame, i have requested for a software update to fix this rapidgate issue, however no idea from nissan Brazil about the issue. With outside temperature of 38°C i have seen my batteries reach 60°C while driving...turtle icon (limited power) on the dashboard and almost no power on highway....and when stopped to quick second quick charge, i get frustrated with 0.6 kW/h of charging rate displayed on dash. Is there any solution to update the software or increase the temperature threshold by myself ?

Do the 2022 models have some kind of this updated firmware?

👍

In Australia it’s not uncommon for leaf batteries to fail by 30,000k. I’m afraid in hot climates electric cars just have to have a proper cooling system. Est to just avoid the leaf if you live in hot areas.

So getting the software update from Nissan is not recommended?

I understand your code, but what is with "

Just found these videos. As an early leaf owner, this is super interesting and ‘PROPER’ engineering. Question: any pictures of the ENV200 pack opened up? It’d be good to see the differences

Has anyone tried piping cooled air into the battery box ? To be used only when it gets too hot. Perhaps use the cars air conditioner to produce the cool air. Yes, it will draw down the battery but better that than damage it.

Hello Daniel. I have cell no.36 with 128 mV lower voltage. Car is 40 kwh. 12 months old. Is this a problem? Thank you for informativ videos. René

Zero buyers remorse about supporting you on Patreon. Very cool software work there, navigating around "rapidgate". I would say that I think you may be overestimating the expense and engineering difficulty of adding active cooling to the battery. There are thousands of people with performance computers that build subfreezing cooling pumps to run through coils inside their PCs. Very functional versions of these cooling pumps have been built by DIYers out of dismantled window air conditioning units, a chill box, and a glycol pump. I don't see why you couldn't open the battery, snake a cooling coil through it, and place the chillbox in the trunk. Whole operation should be well under 700-800 Euros.

Fill the whole battery with non-conductive mineral oil like Linus did?

I got a very easy soulution. Dont use Leaf for long distance trips...

Pitty of no idea 🤷🏻‍♂️ about a can bridge or code. I can pull a battery out and fix cell no problem as an electrician.

why cant you just route the AC from lets say passenger feet to the battery? the air is already chilled and dried, thats how i-Miev has battery cooling.

Another way to limit the charging speed is to charge at higher SOCs.

Funny thing. On first ZE0 models the hotter the battery gets, the faster it charges, at least until it hits red mark. Which is a complete nonsense. Looks like BMS firmware has been developed by complete amateurs...

Its absolutely insane that the world is telling us to but electric cars to save the planet. But then when we do, we are forced to deal with this!

or dont buy a nisan or other ev without cooling ever again

leaf charging speed already is slow as f, so this option is crap. sorry. it's annoying how things are engineered.

What sort of idiot buys an electrical car? If an ICE car behaved like this there would be severe trouble for the company that made this sort of rubbish!