Rejoining this thread, as it's getting interesting again.
On some of the colder mornings, my Multistars are getting a little saggy. Don't know how much longer they will last, so I am revisiting building a LTO pack. And I'm talking 10*C here, not below freezing.
Cold is just one reason I want to go LTO. The fact that I have to carry around nearly twice the capacity I need, just to keep it under 3C, is another. Just 30Ah, will deliver 300A on LTO - and I only need 150A.
So my motorcycle will probably lose 45-50kg from the weight of my bike - Sure, I'll lose a fair bit of range too, but its range I almost never use, except to extend the life of the battery (By not charging full, or running empty).
My biggest challenge is the BMS. Some people say LTO is robust enough to not need a BMS. I've been running 10S LTO without a BMS at a off grid holiday home without issues (aside from the occasional manual rebalance), so I'm almost ready to believe that. But for a daily rider on 55S, I figure it takes fewer bad cells to cause one cell to really go over max, so I want a crude balancer to stop the most extreme problems.
I have just put in a price enquiry for 28Ah pouch cells. Once I get the details back, I might do an Australian expression of interest here and on a solar forum I'm on, to see if we can do a whole pallet or group buy. No reason why the US should have all the fun.
eBike: Q100H on 16S with Phaserunner FOC Controller
eMotorscooter: Vectrix VX-1 on 36S
eCar: Mitsubishi Outlander PHEV... Waiting for warranty to expire
eHouse: Still on grid, but with LTO batteries and 3kw LF inverter...
After 5 builds, the best advice I can give, is start with high quality products. I prefer http://www.ebikes.ca