How long to do EV batteries last? Lets look at a 6 year old Renault Zoe 22kWh electric car.

In this video, I plug in our diagnostic scanner into this 6 year old Renault Zoe and show what the BMS (battery management system) reports.
For more Renault Zoe videos, see this playlist • Renault Zoe 22kWh 41kW
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[@StephenLyons1984]

I like these videos. It's good to see what the batteries are like

[@JeppeKlingberg]

Thank you so much, Matt, for yet another great video! Just to get some more stats here in the comments field: I own a 2019 ZE40 R110 with 11K miles and it’s at 96% (I always charge it to 100% but never leave it there for days)

[@barriedear5990]

Great video as always.

[@MBStudioz]

Another brilliant informative video. Thank you

[@christopherormiston509]

I was looking for a guide for a older Renault Zoe and your video is very informative, thankyou so now I know what to look for in a 2nd hand Zoe.

[@GoGreenAutos]

Glad it helped. Other Zoe videos you may find useful kzbin.infosearch?query=zoe Also www.gogreenautos.co.uk/buyers-guide/renault-zoe-guide

[@davidbaker3786]

Great video. Thanks Matt. Interested to understand more about this topic for my battery leased 35k miles 64 plate. Like others amazed by the range that your vehicle is showing in the cold, interested in the device you have, and wondering how to check for BMS updates. I tried a Konnwei OBD dongle and just couldn't get CanZE to connect. I'll be very glad when there's a decent second hand EV servicing network to tell us these things. Renault dealers pretty useless on Zoe help. Loving the Zoe after 20 months. A perfect second car (which gets used in preference to the ICE all the time).

[@dennisharvey4499]

Thanks for another informative video

[@rachelcarre9468]

Just about to buy a Zoe so this was really helpful information on something I knew nothing about! :)

[@kimhansen1504]

Loved the video:)

[@andrewcawood1364]

Good to watch. Best regards

[@vladimirputin4822]

Great information, thank you.

[@mrtod13]

Very informative - thanks.

[@theothersimonlancaster]

Great video Matt. I've got a Zoe ZE80 and absolutely love it. I've never had a proper charging point at home. I've got a £130 charger from Amazon and only ever charge it at 6 or 8 amps every other night and keep it generally between 30 and 70%. We take it on long journeys, but generally use it for commuting to work and back. It's a brilliant car.

[@malcolmfowler8972]

I wasn't aware lower mileage EV's often have slightly higher battery degradation than high mileage EV's. But the way you explained it makes sense. Another informative video!

[@JacquesPPage]

I tend to disagree on that one. EV's with very good battery temperature and charge management systems, don't show this trend. General Motors Spark EV and Bolt, do have liquid cooling and heating system for the battery pack and the inboard charger never charges the battery passed a threshold that would accelerate its degradation. I own a 2016 Spark EV and it had only 19 000 kilometres when I bought it in 2020 and its battery is in top shape now in March 2022, with 35 000 kilometres. I keep it plugged whenever I don't use it so the battery management system takes good care of its protégé

[@mondotv4216]

@@JacquesPPage Yes it’s incorrect. Most modern EVs have a buffer at the top of at least 5% and sensible EV owners only charge to 80% unless they’re planning on a long trip the following day. The Zoe might be an exception being a short range EV. It’s cycles and calendar age that degrade batteries. A 22kWh Zoe with 150,000 miles on the clock is going to be a lot more degraded because that’s a minimum of 1250 cycles of such a small battery. The proof is in the video - this battery is close to 100% after 6 years of. light use. 25,000 miles = about 210 cycles - 250 cycles.

[@jdickson242]

If the cells are type Li 18650 cells or similar construction leaving them at 100% literally destroys. Got lots of experience with lithium packs for rc aircraft and drones. Cars should have protection to discharge the cells to 3.7v volts as leaving them at 4.2v is not good

[@jdickson242]

Looks like they dont fully charge the cells anyway

[@richardhaywoodh]

So its not really the mileage that is a factor but the user charging routine of the lower mileage vehicle that is the degredation reason for lower mileage cars. Lower mileage cars that are only normally charged to 80% except when balancing charging or going for a run won't deteriorate any more than a high mileage car?

[@philm2417]

Thanks, great video !

[@pknivett]

Great video Matt thank you. We live in France also have a 2014 22kwh Zoé that I purchased from Renault Poitiers with just 7000km on the clock. It's been faultless over the last year and 11,000 km driving in all weathers, including a regular 110 km long commute. The 2 pedal reset shows a max theoretical range of 203 km / 123 miles - interestingly this has increased slightly since I collected the car, due in my opinion to the pack rebalancing after a long period of inactivity. This is our 2nd Zoé and it's proving to be the perfect frugal hackabout, but we are on the hunt for something bigger and longer range now. Please keep the content coming!

[@kiae-nirodiariesencore4270]

Sounds like we live a bit south of you in the Deux-Sevres. Good to hear the Zoe has performed well. Renault generally have not had a great reputation for reliability of their ICE powered cars, the Zoe seems to be repairing that and the new Megan e-tech looks great and is getting favourable reviews. We’ve had a Kia e-Niro since March 2019, so one of the first batch into France. We got it from the main dealer in Niort (Cachet Giraud) who subsequently dropped Kia but this hasn’t been a problem as Groupe Barbier (La Rochelle) opened a Kia dealership in Niort next door to their Hyundai franchise. The car has been great with only the passenger side wing mirror being replaced under warranty when it failed to fold back on locking the car. I am taking the car in for its 60,000 km service this afternoon. If you are looking for something a bit bigger and longer range then I can recommend the Kia...You are welcome to look at Kia e-Niro Diaries Encore on KZbin where I record the long term ownership experience..on road trips around France, to UK and Germany.

[@victorserban7079]

Hy! Do you want to sell the car?

[@patrickmctiernan5740]

I'm hoping to go electric at some point in the future, and information of this kind is invaluable. The Zoe seems a great car if you can live with the limited range.

[@andrewdavidson7951]

ZE 40 has 150 miles plus or minus 20 miles. If you can get a 3-5 year old one, battery-owned (ZE40i) you will have enjoyable and inexpensive motoring. Just remember that many of them will only charge at maximum of 22kW, so if you go on a long journey, it is 1 hour charging for every 60 miles range you need.

[@taylankammer]

Nice informative video, thanks!

[@petersimms4982]

Good informative vid :)

[@potter2702]

Really informative video, can't wait to join #teamEV #teamMZSEV

[@MikeWestern-ul1rm]

Thank you for such an interesting and informative video so well don and much appreciated. Kind regards Mike Western

[@chrisclark9974]

Excellent information thanks!

[@GoGreenAutos]

Glad it was helpful!

[@terryrigden4860]

Vdry interesting and informative video thanks

[@pauldavis9188]

Very informative.

[@peterlocke5204]

Great info many thanks.

[@Bunyip_Studios]

very informative, thank you

[@SteveNC61]

Very informative thank you

[@columsum]

Good information thanks

[@markbray3038]

Very useful thanks

[@judo-rob5197]

Good information.

[@marclawyer2789]

Thanks for the information and useful videos. We purchased a new 21 plate Zoe 110 Iconic and my wife loves it. She manages 4 miles per kWh with the heating and seat on and it's done 2568 miles with only a tail light getting condensation in it as a fault. We keep it below 80 (and above 20%), unless it's being used, and the information I've read is you get the most cycles between 65-75%, but that would be hard to do in the real world. We're not too concerned that it's lost its NCAP rating... Maybe a van next, to convert to a campervan, so we can travel for free...

[@niklaswejedal463]

This was very interesting information - planing on getting a Zoe sometime in the future!

[@sylviaomahony5590]

Thanks for such a clear and informative video. We have a 2017 Zoé and it is a real workhorse, at the moment it's on 135000k and certainly feeling as good as ever. I hope we can find someone to do a diagnostic like this when we come to change it up. We are in France also, and currently awaiting delivery of a Tesla model 3. So now I'm going to search through your list of video and see what you think of it. Than mes again.

[@jthefishy]

Good info.

[@MrRoger2055]

thanks ...lots of really useful info there. clears up some of the myths around EV batteries.

[@seancusack7940]

good info thanks

[@DaveBarnes1]

Good video, thanks

[@deanm7430]

Good information expelling some of the battery myths. My 30kWh Leaf according to leafspy is at 96.5% after 27000 miles and 5years old. It has a 3.3kw onboard charger and I try to keep within 20-80%SOC. If I have a long trip then I do charge to 100% but drive as soon as the charge has stopped.

[@Brian-om2hh]

Most battery myths come from those with zero EV ownership experience, and can be debunked easily.

[@samusaran7317]

@@Brian-om2hh Like?

[@gilesgreenaway5655]

​@@Brian-om2hhbut so much bs from ev enthusiasts.

[@robhandford7747]

Really useful

[@clivesutton2917]

A eye opener as I'm looking for a electric car soon .

[@GoGreenAutos]

Plenty of other videos on this channel about battery life. See kzbin.infosearch?query=battery

[@derekshields7784]

I bought a 65 plate 22kw i model (non lease battery) and it showed 63% SOH until I got the BMS update. Now it’s showing 98% after 50000 miles. Just passed it’s MOT with no issues. The original SOH of the battery is probably why I got it at a bargain £6k !

[@GoGreenAutos]

Good buy. That's the way to get them.

[@andrewdavidson7951]

Yup, you did well. People have paid that much for the car without the battery, which they then need to lease or buy for a large amount of dosh.

[@SandyRitchie]

Ah the fabled 98%. You know they all do that after the BMS update.... its a lie. You'll soon see the SOH dropping.

[@suatsert3523]

Hi. After the bms update your range went up too?

[@derekshields7784]

@@suatsert3523 It seems to be calculating the range correctly. It's been getting 3.5 miles/KWh and about 80 miles to a charge which is about right for the 22KWh battery.

[@denischown6596]

Very good to know battery packs last longer than first thought

[@briangriffiths114]

As a low mileage user, I am keeping the batteries charged at between 40 and 80% when the car's not used for a few days, although they are occasionally held at 85%. As my Fiat 500e has an active battery management system and 10% between useable and maximum capacity, I hope that my car fares as well as your Renault Zoe. Good video, thank you!

[@rme7635]

Top explanation! A degradation is prevented by one magic rule of the manufacturers BMS: Never discharge or fully charge to 0 or 100%. That is what keeps them alive for a very very long time! The usable range is somehow always set between 5% and 95%. Also 100% SOC Status means ~95% charged. But even without owning a car you can experience this effect: With your personal electronics! I had now 2 Thinpad Computers for the last 15 years: The integrated Battery Management has allowed to set the max. charge percentager; I have always set it to 90%. I had never replaced any battery on both computers during this long period of time. And their battery capacities are still fine. Even on my 2006 Model.

[@petewright4640]

It needs to be user settable for us geeks. So for example i could set my ev charger to only charge to 90% unless I'm going on a long journey. True the manufacturers BMS will not go to actual 100% but its always a compromise between battery life and headline range.

[@redpillnibbler4423]

Can you set it so it switches off at a certain level of capacity? (eg 90%)

[@gigarise]

Good to hear that

[@timsmith5339]

That was a most interesting and informative video. 2% degradation seems to be bucking the trend but is in line with my Zoe experience which was a 2014 car that I recently traded in . That was indistinguishable from when I bought it four years earlier and I would estimate that it had only degraded a similar amount to the one you are looking at. I would never have seen 70odd miles at 63% charge without resetting though, so I assume you had done that. I have heard that you can recover a mistreated battery. If it has been abused like you said and shows some degradation, treating it well can sometimes see it recover to some extent. Thanks, Tim

[@samusaran7317]

Gom isn't a good indicator of much. Don't rely on it

[@mondotv4216]

I like your summation at the end. Basically battery degradation is overblown. However it’s not just the Gen 1 LEAFs that have issues. Even the current LEAF does not have thermal battery management. Itks on my Don’t Buy list for unwary consumers.

[@Mac_Cam]

Very interesting about battery degradation

[@spsmith45]

Thank you. Our car is the same as this one.

[@barrymurton8988]

Brilliant!

[@martinsweltdertechnik1868]

cool video.

[@simonupton-millard]

Just thought I'd comment as I own a 2016 22kw Zoe that has done 53k miles have had her from new battery helth is between 97% and 95% depending on SOC and temperature when you measure the helth according to CanZE

[@nigelweir3852]

Had 2014 Dec 22.4 kw hour , 43 kw ac max charging motor . On sale in sept 2020 had 45 000 miles approx , had no noticeable degradation , despite being 43 ac charged and 22 Kwan charged for most of its life . Actually believe had better range when sold than when new as Renault did bms update which allowed better range when updated in third year at service

[@jerrymcentee329]

Hi Matt, where and which scanner would you recommend have a eniro 64kw. Great content.

[@emil4270]

Good information

[@andrewgardner7104]

Hi thanks for your video, does the newer shape Leaf have battery thermal management. Andy

[@auduntysnes4354]

Open circuit voltage is slightly higher than the voltage you'll get under load. Also, the voltage drops slightly when state of charge drops. I.e. multiplying open circuit voltage with Ah will not yield an accurate number for how much energy the battery can supply.

[@rklauco]

Thanks, same experience here - 2014 Zoe with 100k km, battery is still at 95% (!!!). Can't believe it.

[@johntisbury]

This is now our car featured here. Great to hear and see this, although in fairness to Matt he had already shown us this information before we purchased it. I can also add that with 0 miles showing and flashing many flashing lights and beeps there's still 3% left in the battery pack.

[@GoGreenAutos]

Hi John. Been pushing the Zoe to the limit then!

[@johntisbury]

@@GoGreenAutos just the once. Rolled onto our driveway with 0 miles 🥴

[@guttural8]

This has increased my confidence in buying a secondhand ev like the Zoe 👍

[@GoGreenAutos]

Plenty of similar videos on the channel too.

[@juliandavies7890]

I have a 63 Reg Zoe Expression and it has done 24500, and has a battery state of health of 98%, I checked it today.

[@muneer40]

Tanks:)

[@paulvanherck]

Very informative, a ZE40 60000km 4.5y old car, driver

[@Apafej627]

How do you get the BMS update?

[@au18ert]

I've got a 2015 and I've not seen any real degradation. Range changes all the time depending on the weather.. The BMS update is a nightmare to get Renault to do especially from franchise dealers as it takes days to complete. Fortunately videos like this help.. Check the heating works as mine was faulty and fortunately got it fixed under warranty. The the air con heater unit cost £1500. I couldn't believe it failed on a car that was only 4 years old and had 22k on the clock. Apart from the those first issues it's a brilliant town/second car.. Don't buy it if you intend to use the charging network it's just not good enough..

[@Salty3439]

KZbin won't let me post what I really want to say, Great video though 😊😊😊

[@worldofdaniel4763]

My Zoe is at 98%. Also keep in mind this is air cooled so is holding well,but new ones liquid cooled should last a lot more do to the advantages of keeping battery at optimal temperature during all external temperature variations

[@Soruk42]

Diesel driver here (yeah, i know...) I'm thinking about a second-hand EV as a local runabout (and use the diesel for long journeys). This is certainly useful information about battery life. The cost still scares me, a lot...

[@altoclef6688]

Don't be scared. Have an EV since ten months, basically I switched from paying to the petrol company to paying to the bank but the grand total is definitely less (on 28000 km/year). The running cost is ridiculously low. Longer journeys is more of a hassle than with a petrol car, but in no way unbearable. The worst part is the payment for fast charging (you need one solution per company, generally you can't simply pay with a bank card) and the rate of broken fast chargers. The driving experience - you realize how it must have been on the railways when the steam locomotives were phased out... you won't regret going electric! No way I'm going back.

[@Soruk42]

@@altoclef6688 Thank you for this reasoned reply. I still feel I would keep the dinosaur burner for the longer journeys, and use an EV as a local runabout. Aside: Are you a viola player?

[@altoclef6688]

@@Soruk42 I am a very bad viola player but yes, I play the viola. Main instrument is the piano. But I want to promote the viola, it's an often overlooked instrument with a very pleasant sound.

[@redpillnibbler4423]

Haha you’ll not want to go back to diesel after driving an ev!

[@mondotv4216]

You have to use the nominal voltage of the cells which is 3.6V which makes it a 345V battery. Which makes it roughly 24.36kWh but Zoe is probably keeping 10% - 15% in reserve so roughly 22kWh capacity.

[@samusaran7317]

That isn't a reserve....

[@daveg56]

Thanks Matt, good to know. We have the same year Zoe, is there a simple way to determine which version of the BMS software is running on the car, for example using the OBD?

[@GoGreenAutos]

I'm not not sure. With my scanner I can read the firmware level/ID, but then I've kept no records of others so don't know what code is the updated version. I've always done it by doing a two pedal reset which resets the driving economy and then can judge it from the displayed range and also looking at the battery SoH.

[@mrtommyboy926]

Would be interested to see your mg battery

[@barryw9473]

Thanks. I think ambient temps are a major determinant of pack longevity. UK has a mild climate, but I suspect if you worked in Arizona or Spain you would observe a lot more degradation.

[@GoGreenAutos]

Yes correct. Californian cars are the same too. We're lucky in the UK that we have a EV friendly climate....for now!

[@barryw9473]

@@GoGreenAutos I live in the SF Bay Area and my 2017 e-Golf (~40,000 miles on odometer, purchased new in March 2018) is at about 29 - 30 kWh usable capacity since 20,000 miles. I rarely charge to 100% and in super hot temps limit pack to 80% SoC. But if I lived in Southern California I am sure the degradation would be worse.

[@Alex-tj1zo]

What about having a Webasto heater installed to help with the winter range decrease ? Thank you.

[@backwoodsbungalow9674]

There are a few KZbin videos posted by Mitsubishi iMIEV owners who have fitted a heater with good results. Sounds like a sensible idea for a 22kWh Zoë but not seen it done yet.

[@andrewdavidson7951]

Useful video. take home message...don't charge your car unless you need to use it next day.

[@siulmig]

Great video once again. Many thanks! Do you know how the brake fluid maintenance on these Zoes is done? Is something we can do on our own, any workshop can do it like on any ice car or it really needs to be done by Renault dealership? Many thanks

[@GoGreenAutos]

The Zoe has a unique braking system. A partial fluid change can be done by any workshop but a full change can only be done by a Renault dealer and it expensive.

[@siulmig]

@@GoGreenAutos thank you

[@David_Parr]

Mine was supposed be changed going by Renaults recommened service schedule of every 4 year's ( 72,000 miles) . But i asked my Renault dealer while it was in for a service to check the brake fluid for moisture and the test came back as ok for that test . So this year I may look at having the fluid changed while it's in for service come June this year. They lock out the Traction power pack when doing the brake fluid , It's cheaper to try and get say a service and brake fluid changed done at the same time. DSG Morecambe show the price for Brake fluid change at £269. It pays to look around as most Renault dealers have different prices for service , brake pads fitted , etc

[@mikejf4377]

Can they set the top voltage for charging to help it from degrading? That car is great. How many miles can that car drive when fully charged?

[@lowenruh_est]

Very good video! Exacly what I was looking for! I'm just considering to buy 6 years old 22kWh battery Zoe. I was expecting also a driving range test and how much it could drive, when battery is full, and whats the reality.

[@GoGreenAutos]

The range you can achieve with a full battery at different average driving economies is: 4.8 mpkWh (super efficient city driving) = 105 miles 4.5 mpkWh (efficient summer driving) = 99 miles 4.0 mpkWh (average driving) = 88 miles 3.5 mpkWh (efficient winter driving) = 77 miles 3.0 mpkWh (very cold winter driving) = 66 miles

[@krisvandermeulen253]

So I think it might be better for the lower mileage driver to charge the car to 80% and charge a few times more. Same usage for the driver but less stress for the battery?

[@ncwy]

Nice video. I'm surprised you have so much range in the cold weather. My 2016 Zoe with about the same mileage only gets about 80 miles range in this weather and in summer i can get 107 miles. How do I check I have the latest BMS?

[@AndrewEbling]

If the car is showing that kind of range, you have the latest BMS. But if you want to double check, you can buy an OBD2 dongle and use the CanZE app to check. Plenty of KZbin videos on this.

[@Apafej627]

What is Renault's warranty on owned battery packs?

[@markreed9853]

I do wonder if the updated BMS is just unlocking some extra capacity of the battery to save Renault having to replace under the battery lease agreement?

[@AndrewEbling]

I think that's OK- they were probably being cautious and waiting to see how real world use would affect batteries. Now they have more data, they have the confidence to unlock a bit more capacity, which is helpful for us as owners.

[@sandraoldfield4348]

i am not at all upset keep up the good work .I am thinking of going to an e/v do you take petrol cars in p\x regards chris

[@GoGreenAutos]

Yes can do. But you'll probably get a better price selling on motorway.co.uk

[@paul_wiggin]

average of 20.9kWh/100 miles looks really good. ~160 km on one charge - not bad for a city car of this price.

[@barryjgreenhalgh8450]

Just found your channel,it’s great. I have a Honda e for which there is very little tech info from Honda and as a retired Fleet Transport Engineer I find this a bit frustrating. Battery life is often referred to in total number of cycles. I have never seen the definition of a cycle, ie is it one full cycle from 0% to 100% or can it be any charge and discharge cycle say from 50% to 80%. Any ideas? Honda don’t mention cycle in their warranties, just 8 years. The e is rated at 35Kwh with a useable rate of 28.5Kwh. I charge it when I reach about 20% and charge to 100%. I assume that the 100% will actually be about 95%. Am I correct? As the battery is liquid cooled there can be quite a lot of range used controlling the battery temperature.If I need the full range I normally leave the car plugged in until I use it as I assume that this will keep battery topped up during any battery management activity. Is this correct? Please keep the videos coming 👍🏻🥳

[@GoGreenAutos]

Glad you found the channel. I've been making hundreds of videos over years now and some only get a few hundred views. Its very frustrating how the channel hasn't grown. I've not had a Honda e in yet, but yes when you charge to 100%, the battery will be at something like 95% SoC. The liquid cooling on your pack probably isn't used too much (in the UK), as batteries run hotter than you'd imagine. Its probably only cooled when doing a DC rapid charge or on the occasional hot summer day. Most of the time, its probably warming the pack (if it has a heating function). But yes, if you leave the car plugged in, it will be at 100% SoC when you disconnect. If anything used power, the charge will be called for, if its plugged in. As for what is a battery cycle, its not when known or documented. But I really wouldn't worry about it. Far too many people worry about battery degradation and battery health. The car has a BMS which looks after the battery for you, so you just need to plug in and forget about it. The majority of people will not keep a vehicle long enough to ever experience any battery degradation, yet spend far too much effort trying to look after the battery for little or no gain. But because most fear change or are weary of things that are new, there is too much emphasis given to degrading battery packs when its not really an issue. Engines have a lifespan and on average it is looking like its less than an EV battery pack, yet most people are quite slack with oil changes (if its out of warranty) and don't obsess with its wear and degrading. I'm not saying you're like this...but this is how generally EVs are perceived and how new EV drivers treat their EVs. The worst thing to get is a app to track the battery SoH. I know many Leaf owners who do this and then get completely obsessed with their battery health.

[@barryjgreenhalgh8450]

@@GoGreenAutos Thanks for your reply it. Was very useful. I chose the Honda because of the conservative approach they have always had to their design and their reliability. The car is over engineered in every respect. I know what you mean about Nissan Leaf owners.

[@sneaky_krait7271]

Can any OBD2 scanning device get that battery health % data?

[@Vipauer]

Hello Friend. Greetings from Portugal. Can you confirm which version of BMS you have installed? Usually there are two ECUs LBC and LBC2. Thanks and regards.

[@GoGreenAutos]

We don't do BMS updates. They go to the local Renault dealer for that. But saying that, we've not send one in for a year or so.

[@daveamies5031]

I had nothing to comment, but this is a useful video and that should be encouraged so this comment is simply to lure the YT statistics analytics code and give it something to chew on 👍

[@GoGreenAutos]

Thanks for that!

[@paulcooper9981]

Useful video to debunk myths. I get a lot of very polarised (pun???) EV videos in my feed, arguments between unreconstructed petrolheads and ardent EV-ers. Me, I still drive a Non-ULEZ compliant diesel (occasionally) as it doesn’t make sense to scrap a perfectly good car. I guess this comment may draw some trolling ….

[@patrickroche7026]

Good video, really answwered my question. I am looking for a ev car to do 88 miles return two days a week and this looks like it would be perfect for it

[@GoGreenAutos]

The Zoe 22kWh and Leaf 24kWh will do that just fine in the summer if driven efficiently, but will need a short top up in the winter. A Nissan Leaf 30kWh, Kia Soul 27/30kWh or something else with a slightly larger battery would do it without a charge and not give you range anxiety.

[@johng5474]

Do you think there will after market replacements for the Zoe like those for the Leaf?

[@GoGreenAutos]

Yes one day. But there's no demand yet so no one can make a viable business from offering that service. Some have tried and failed too with the Leaf.

[@kjelllindberg6987]

You can not multiply the battery package voltage with the current capacity and get the total stored energy. This is due to that voltage is not constant during discharge...

[@Toby_the_Glen]

Is the drive unit itself subject to degradation?

[@sebastiencote1565]

Your formula is right. P=UI (Power=Voltage*Current) and E=Pt (Energy=Power*time). So yeah, Voltage*Current*Time = V*A*h = Wh. the you Divide by 1000 to get kWh.

[@michaelbruton3537]

Thank you for posting the indepth on battery charging On your high mileage ioniq 28kw do you know of the range you was getting on average if you charge it to maximum Only I've seen some high ranges that I've never achieved in the past 5 years with my own

[@GoGreenAutos]

My partner drives the Ioniq, so I rarely see the range now. But its about 125 in the winder and about 150 in the summer. As with all vehicles (ICE & EV) the range is due to your driving economy. Look at the mpkWh figure. I expect your driving style has room for improvement. I have been meaning to make an efficient EV driving video one day.

[@michaelbruton3537]

Thank you Matt I've never bothered using ev mode as it wasn't a function I was interested in I do find the placing of the mode and brake hold a bother for me It seems fine if you are just sitting there but on the move with a big coat on I usually end up putting the seat or steering heating on

[@tom53332]

Interesting result, however the SOH as a % is not quite informative without knowing how it's measured by the car, which could be as crude as simply counting the number of charge cycles to make an (gu)estimate. It also matters what the car compares the current values to, is that the values of this particular battery pack when it was new, or to some arbitrary factory setting. Any ideas on how Renault determines the SOH?

[@kyriakoslykoudis9133]

You need to use the nominal voltage (3,6v) and you'll get correct kwh.

[@521wooley]

What make & model diagnosis scanner where you using ? Thanks P

[@GoGreenAutos]

Its a Autel MX808TSC - see www.autel.uk/diagnostics/tpms/mx808tsc/ You can do the same with the CanZE app and a ODB2 dongle or buy an iCarsoft scanner with Renault software loaded. I have two used iCarSoft Renault scanners for sale and they both work very well on the Zoe and the Kangoo ZE. If you're in the UK, email me on [e-mail] and I'll give you the details on Monday.

[@thechonkymermaid]

Our 22kwh zoe is a 14 plate, and when I last checked, it was 97% soh. I was shocked. Honestly didn't think the car would last this long but its still perfect. I will be sad to see it sell this spring. But we need something bigger. Older zoes are absolutely brilliant.

[@GoGreenAutos]

Good to hear.

[@FilipOvikGT5]

What is the minste of that zoe? I am interested to buy an old used Zoe as cheep as possible

[@HazardXXX]

I have Vauxhall Ampera with 10kWh battery 14 plate. Still gives me 40miles EV range in the summer. Not a single issue.

[@itekani]

There is also a BMS update for the earliest ZE50 Zoes. So if you experience poor range, it could be the solution.

[@cingramuk]

Any idea how you can tell if it needs it or not? I'm looking at a 22 plate that was registered July 22.

[@itekani]

@@cingramuk I don't know the versions of the software, but if you find out it might be possible to see which version the car has using the CanZe app. Otherwise you know if you get poor range and/or it takes very long time to charge from 99 to 100%. That said, I don't think a '22 or even a '21 model should be affected by this. It should already have updated firmware from the factory.

[@chrisnicalane5864]

What is the model of diagnostic tool you have, Matt? I have a Zoe and would really like a tool like that. Cheers

[@GoGreenAutos]

Its a £1,000 Autel scanner, so you wont want that! You can do the same with the CanZE app and a ODB2 dongle or buy an iCarsoft scanner with Renault software loaded. I have two of these for sale and they both work very well on the Zoe and the Kangoo ZE. Email me on [e-mail] and I'll give you the details on Monday.

[@chrisnicalane5864]

Thanks for the reply. I have the OBD 2 scanner and use CANZE app but I have some issues, for one it does not give the sort of detail on battery condition that yours does, and, as I have seen others comment, incorrectly calculates the State of Health (it underreads). I would like to better monitor the battery on my Zoe than is possible with the OBD2 set up. I will email you later. Cheers, Chris