40 Ah LTO cylindrical cell

NANO LITHIUM TITANATE BATTERY CELL

1 Power at 25°C for 10 sec is calculated using FredomCar discharge formulas.
2 Optimal storage temperature is 25°C.
3 In battery systems, the battery management system must enforce the voltage limits at the individual cell level.
4 Cell terminal heights are not included in the stated cell dimensions.

Technical specifications

 CELLPerformance Characteristics Nominal Values
Nominal Voltage 2.3V
Capacity (Minimum/Typical @ 33amp[1C rate] at 25°C, CCCV charge) 40/42Ah
Typical high rate capacity (198 amp at 25°C, CCCV charge) 37 Ah
Typical energy (40 amp [1C rate] at 25°C, CCCV discharge) 88 Wh
Pulse power (400 amp [10C rate], 10s pulse, 50% SOC at 25°C) TBD
Pulse power (FreedomCAR, 10s pulse,50% SOC at 25°C)(discarge/charge) 1550 W, 3755 W
Energy density 161 Wh/L
Power density (discharge/charge) 2834 W/L, 6865 W/L
Specific energy 72 Wh/kg
Specific power (discharge/charge) 1260 W/kg, 3053 W/kg
Internal charge impedance(10s DC pulse 50% SOC, at 25°C) 0.52mΩ
Internal discharge impedance(10s DC pulse 50% SOC, at 25°C) 0.71mΩ
Max continuous charge 240A
Max continuous discharge 240A
Max 10 sec Pulse discharge or charge current 800A
Internal impedance (1 Hz AC, 10% SOC, 25°C) 0.29 mΩ
Life Characteristics
Cycle life at 2C charge and 2C discharge, 100% DOD, 25°C >25 000 to 80% initial capacity
Cycle life at 1C charge and 1C discharge, 100% DOD, 55°C >3000 to 90% initial capacity
Calendar life at 25°C 25 Years