JRP3 said:
I think continued improvements in lithium chemistry will eventually make lithium even better than it is, and it's already better than NiMH in most aspects. Nissan just picked the wrong version of lithium batteries to run without a TMS.
+1
JeremyW said:
On a side note,
check out this PDFof the experiences of the Gen 1 Rav4 EV owners. There's a few historical repeats in there. :roll:
Nice find! Be sure to visit the
RAV4 EV 100k club created by
darelldd. One of my favorite EV sites.
RegGuheert said:
That's not the only possible conclusion here. Another one is that the car is reporting less energy usage for the same amount of consumption. Or some combination of both inaccurate consumption numbers AND less battery capacity. Considering that we calculate battery capacity from the consumption numbers, there is no easy way to differentiate the two except to measure wall energy for a recharge. And, no, I am not saying this is the problem in AZ, but with TickTock's car it appears it was part of it.
I missed your comment, I'm sorry. Yes, you are absolutely correct. One more thing I should note: I drove the car down to turtle quite a few times to perform a range test, record the total usable energy and
measure the kWhs needed to charge it back up to full. This data shows declining total capacity and range.
Starting with 3-5% last winter, up to about 8-10% this summer. This type of loss
would be roughly consistent with the 15% reported from Casa Grande. Obviously, this behavior could be caused by a software bug. For what it's worth, I've been monitoring pack voltage for about 8 months now. I would consider this to be a source of truth, and although it does fluctuate a bit, it was never below 393 Volt. Typically, it's 394 or 394.5 Volt after a full charge.