Battery Upgrades are very possible

[MikeD]

Daklein: Thanks for your pioneering spirit in this area in general and your response to my question in particular! One follow-up question: should this device also work if one were to replace one's original pack with a smaller capacity one? E.g. one buys a new 62 Leaf (for the newer features, etc but doesn't need that amount of range) and decides to exchange it with someone else's Leaf with a 40 (or even a 30) battery pack? (I guess this may make more sense if the device cost drops significantly, which should happen eventually.)

[Daklein]

One follow-up question: should this device also work if one were to replace one's original pack with a smaller capacity one? E.g. one buys a new 62 Leaf (for the newer features, etc but doesn't need that amount of range) and decides to exchange it with someone else's Leaf with a 40 (or even a 30) battery pack? (I guess this may make more sense if the device cost drops significantly, which should happen eventually.)

The CAN bridge method should work in the same way, the GOM related scaling messages would be different, but the battery pairing should be the same.

The mechanical part would be different, but anything can be done. The 62 car has a lower extended frame rail on the sides, and a new 62 car with a shallower 24/30/40 pack would have the pack sitting lower with spacers at the front and back, and that would misalign the big DC at the front. Or cut the side frame extensions off the car. Swap the rear brackets with the battery also. Vs. the way I'm going where the front and rear mounts are the same height, and add 40mm spacers on the sides.

Propilot and other features are available on the 40 kWhr Leaf though, I'd go with that.

[MikeD]

So is the 2019 (and 2020?) Leaf bodies' underneath battery pack support different between the 40 and 62 battery pack models? If so, since the 62 pack is significantly heavier than the 40 such a difference for the 62 body might have been deemed desirable for additional support?

[Daklein]

Just the Plus version is a little different for mounting the 62 kWhr battery, which has 40 mm additional depth, but some of the mounting points are still the same. More discussion back here: https://mynissanleaf.com/viewtopic.php? ... 80#p572415

[Daklein]

Happy New Year! I hear the happy Leaf sound again! The 62kWhr pack is bolted up and powered up. Thanks to mux and the Muxsan can bridge, it just works! The GOM seems reasonable for the current SOC. Only driven on the jackstands so far, but looks good. Forward, Reverse, and charges fine.

I still need to fuss with putting the covers on (not sure how many of the mounting points will line up), and wrap up a couple other mechanical items. There may be some minor items with the bridge to do (some leafspy data seems missing, and I'll want to set up the bridge with Dala's ending SOC charging control.)

https://youtu.be/53Kh1jo9MsU
https://photos.app.goo.gl/tcVLm3SHCtozeLSa6

[MikeD]

Look forward to your future posts in this thread...

[MikeD]

Congratulations!: Do you expect that you will normally charge up to ~80% (for battery pack health) when you expect not to need the maximum range during a given day?

[Oils4AsphaultOnly]

Happy New Year! I hear the happy Leaf sound again! The 62kWhr pack is bolted up and powered up. Thanks to mux and the Muxsan can bridge, it just works! The GOM seems reasonable for the current SOC. Only driven on the jackstands so far, but looks good. Forward, Reverse, and charges fine.

I still need to fuss with putting the covers on (not sure how many of the mounting points will line up), and wrap up a couple other mechanical items. There may be some minor items with the bridge to do (some leafspy data seems missing, and I'll want to set up the bridge with Dala's ending SOC charging control.)

https://youtu.be/53Kh1jo9MsU
https://photos.app.goo.gl/tcVLm3SHCtozeLSa6

Congrats on the new batt! But are those temp bars correct?!

[Daklein]

Congratulations!: Do you expect that you will normally charge up to ~80% (for battery pack health) when you expect not to need the maximum range during a given day?

Yes, I think we'll charge to a lower SOC normally, 50% would do more than our typical use now. If we're going further and depending on where we're going, charge more at home, or stop at a fast charger.

[Daklein]

Congrats on the new batt! But are those temp bars correct?!

Funny, youtube chose the still image that had the most lit up on the dash, during the key-up sweep of the display.