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Replacing & Upgrading of Traction Battery 24kW to 40kW in UK

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12K views 35 replies 11 participants last post by  MaxlifeUK  
#1 ·
My trusty Gen 1 24kW Leafy (2014) is just starting to show some signs of struggling this winter. I have done 135700 miles in it and the SoH is 10/12 still, thats 77.4% on the LeafSpy Scale (Range varies from 50 miles Winter to 75 Miles Summer)
Now I appreciate that its a good battery and been well maintained, but the aim of this message is to gather feedback as to upgrading the pack to a 40kW and where in the UK is a decent place to go?
I understand that those lovely chaps at Cleveley EV's have had some issues with Battery Upgrades and the Muxan kit, thus stopping doing the job. So is there anybody else in this field in central(ish) England that is doing these jobs and I could get to have a visit and chat with them? or email

Be interested to hear from anyone thats had an exchange/upgrade to the 24kW battery and their experience.

Cheers everyone
PS: Im just starting my thoughts on this, not actually committing to do it..... Yet! :p
 
#6 ·
I agree with you entirely on this, but would just point out, with regard to the LEAF, it's tech didn't get more modern at all with the Mk2, it just got (a very clumsy) re-style and a more old fashioned/conventional dash put in the car.
 
#5 ·
Have a look at my thread including upgrading to a 40kWh battery later in the thread for reference if you like.


I would agree with the advice already given regarding feasibility though. I had no labour cost at all as I did my own change for the fun of it and the end result was borderline financially viable over just selling and buying a bigger battery LEAF. If you're paying a garage to do it, it has to be for the love of your particular car (or maybe not liking the Mk2 styling, I don't!) as the figures just don't work.
 
#9 ·
Hello could you please let us know in the cars life how many times it has been charged and how often they have been rapid charges and if you have regularly run it to a very low or high percentage of charge.
Would love to know if starting with a new battery whether you would treat it any differently in the hope of extending the battery life.

Sorry I have know knowledge of repairing or changing batteries to answer your question but curious on your opinion of what causes battery degradation from your previous uses of the car.
 
#36 ·
A very late reply, so please forgive.
I still have the Leaf and its covered 148300 miles now with 73.67% SoH as of writing. The car is now over 10 years old and I seriously think the area of degredation is over hyped. My car was bought for a purpose, but it was one of 6 only built; the car was supposed to be a mule for the new Gen 2 that never materialised and thus I don't want to part with it. Such luxuries as Slide/Tilt electric roof, DAB Radio/Android etc were fitted to the car and still all operate perfectly. I suspect the battery was also tweeked as well as its performance has been outstanding for a traditional 24kWh. The software reporting of its charges is bizarre to say the least and completely untrue. Leafy has been mainly charged overnight via the 3.3 portable, occasionaly use the 6.6 during the winter months and only use Rapids if Im doing a long distance journey and time is an issue. If I needed to go the distance these days, I question using the car to start with; the train is more convenient and much less hassle that parking charges at destination. Daily use of the car is 100% return to base anything down to 28%, occasionally less. Recharge and repeat. (I have Battery storage from Solar at home so I can dump the power gradually from that into Leafy and top-up the following day whilst the house is empty)
I am just now starting to consider a new vehicle now over battery upgrade and I'll keep the Leaf indefinitely for those stupid journeys requiring a vehicle.
 
#11 ·
Has anyone had a battery replacement done by Nissan?

I appreciate that given what we are concerned with here is the garage costs, a Nissan dealer is going to be bad on that front but I am just curious.

Also, would they change the battery for a different size, e.g. 24kWh to 40kWh? If you went in with a very tired 24kWh and asked them to replace the battery, I presume they would but at what price and how would they even source a 24kWh at this point... I would like to find out!
 
#17 ·
Well i had a 30 and now a face lift 40 and its significantly more efficient. This is comparing two entire years so not weather and driving style.

I actually still have access to my old leaf app. The new owner never registered for it. I have posted this stuff before its strange people wont accept efficiency figures even with substantiating evidence from the apps !

I am doing direct comparison here based on my experience if you dont have experience of a facelift mk2 40hwh vs a 2016 30kwh you cant make the direct comparison. Both cars were Teknas and had the less efficient wheels as well

It is an old platform but bomb proof build quality really amd its all reflected in the price.

You can pick them up so cheaply now even new / nearly new. The price I paid for a top spec Tekna with 600 miles on clock was not much more than the cheapest new comparatively sized base ICE last year.

Perfect city cars. I am on my second one and have two friends who also bought second leafs last year. There is a reason people buy them.
 
#34 ·
My take on this. I converted my e-nv200 last year from 24 to 40 kwh. The process is largely similar to the leaf with the added complication of aircon gas removal and regas hence i needed a proper garage rather than doing the swap in a car park somewhere. A car lift makes battery swaps much easier as do battery scissor lifts but it can and has been done before using jacks and an inflatable mattress to lift the pack (i dont advise this but if you needed to do it for no money then theres an option for that).

So really its just how cheap you can get your 40kwh/62 pack and what condition is it in. Assuming you are competent mechanically.

The differences to newer model leafs that are worth it.
160/110kw inverter better than 80kw

Propilot which can be used for comma ai
Fuller self driving

Better maps (my 2011 leaf cannot upgrade maps past a certain year which is a really shit commercial pracise which make me want the lowest spec leaf just to enable an aftermarket stereo without breaking remote charging and heater all of which can be added using ovms.

I think the e+ had faster chademo speeds but i bet it still rapid gates due to questionable design choices regarding battery cooling or the lack there of.

The problem with the idea of buying another newer leaf after selling yours is that you still have a rapidgating car which inevitably too will need a battery refurb in 6 to 10 years and i dont see nissan offering a solution in that time.

Anyway rant over. I hope that someone comes up with a better battery for the leaf / env200 and the evsenhanced one is too much money