OP. Any update on all this?
66160 2.3V 40Ah LTO Cell
Max. Constant discharge/charge rate:10C
Pulse 10 Sec discharge/charge rate:20C
Discharge Cutoff Voltage:1.5V
Charge Cutoff Voltage:2.9V
Cycle Life:25000 times
In fact, the LTO cells have some disadvantages. They are heavy and have low specific energy. The advantages which made them attractive were convenient packaging, long expected life, and price(while Greentec had them).A lithium pack does not have to be LTO, it could be Lifepo4 etc..