At the upcoming WCX 17: SAE World Congress Experience (the re-imagined SAE World Congress) in April, Xiao Yang and Ted Miller from Ford will present a paper on the fast recharge capability of Li-ion batteries and its effect on capacity degradation. Of note in the abstract:
We find out that 5 Ah prismatic Li-ion cells can be fully recharged in 3 minutes under a constant rate of 20C, or in 2 min (25.5C) from 0% to 85% SOC (state of charge) without undue stresses. We cycle the battery at 16C charge rate from 0 to 100% SOC and do not see any unexpected battery capacity loss in 50 cycles, where half of the cycles are 1C-rate charge as a reference capacity check.
Xiao Yang, Ted Miller (2017) “Fast Charging Lithium-Ion Batteries” SAE 2017-01-1204