Reliably functioning third-party battery packs would require the BMS to be programmed exactly as Nissan programs the BMS in its Leafs. That almost certainly involves proprietary software. Not likely to happen; not likely that Nissan will license its software to an aftermarket supplier.
Well, if I'm wrong, I'm wrong. Wouldn't be the first time! I'll be quite interested to see if some company actually offers a newly made battery pack for the Leaf, rather than just refurbishing salvaged battery packs.
Well here is another startup going after that business. The more the merrier I say! https://fenix.systems/product/nissan-leaf-battery-pack-replacement
I see all kinds of red flags from looking at the promo on that website. Red flags such as "Much of the technology we are using will be revealed at a later date as we are still working on the patenting of our solution." I read that as "We haven't figured out how to build these things yet, but we hope we will eventually be able to do it, if we can get enough investment money thrown at us." Another indication that they don't know what the heck they're doing is this claim: "This pack will use a Lithium Ion technology, not unlike the cells used in Tesla’s battery packs." Ummm... don't tell them, but pretty much all BEVs being made today use lithium ion batteries. That includes the Nissan Leaf and all of Tesla's cars. I absolutely would not give this company any money, not even $1 for a reservation, unless and until I saw some reports from actual retail customers talking about how well -- or how poorly -- these packs work. And that's assuming that they really will produce a product; that this isn't yet another investment scam. Frankly, I suspect it's the latter. Like I said: Lots of red flags there at that website.
Here's a fairly advanced hobbyist who has evolved into a business. He has a 2011 Leaf, and has been upgrading its battery continuously for years now. His current range is something like 400km. AFAICT, he's replaced his 24kWh battery with a 40kWh, and added a bunch of modules into the trunk section behind that half-bulkhead thingy, then put a carpeted board on top of the whole affair. Look in his channel and you'll see almost everything about the process, and the bits he's had to build, he also sells. Got nothing but kudos and admiration for this guy. Hoping to do it myself as my current battery starts to get creaky, but my 2011 has a 2015 24kWh with 11 bars after almost five years of use.
It's called MUXSAN, to be found in Delft, the Netherlands. They have all sorts of swaps and upgrades now: https://muxsan.com/
I saw battery swap from 24 to 40 kWh, but the problem was with indication of range. You need new FW for battery controller, but there is not exist (or I don't know about it).
That's precisely what they do at Muxsan, they put an additional CAN module that does the trick. https://muxsan.com/ The module itself is available for sale separately, see here for a similar tool: https://evsenhanced.com/products/battery-translator/
It's not what TS looks. He want remove old battery and install new or used but alive module. For example this used battery with 45k mileage much more cheaper than extenders.
Yes, unfortunately. There have been rumors on Tweeter about the possibility of exporting oversea their technology. Stay tuned.