PS I'm only hoping to pulse at 1000amp as like a quick acceleration boost and not continuous. Continuous should only be 400 max.
With 100 amp-hour combined cell group capacity, 1000 amps (10 kW/kWh, or "10 C" discharge rate) even momentarily would be aggressive for any EV cell, and especially for these cells which are intended for backup power applications. Even 400 amps is 4 C, which is much too high for a battery without any cooling at all.
For an illustration of reasonable rates:
The Nissan Leaf
has cells intended for EV use, but no active cooling. All variants have fundamentally the same motor, but the peak power allowed depends on the battery:
- 24 kWh battery: 80 kW maximum, 3.3 kW/kWh
- 30 kWh battery: 80 kW maximum, 2.7 kW/kWh
- 40 kWh battery: 110 kW maximum, 2.8 kW/kWh
- 62 kWh battery: 160 kW maximum, 2.6 kW/kWh
, the production EV champions of pushing the short-term limits of their hardware, have put at most about 800 kW out of a 100 kWh battery, for a discharge rate of 8 kW/kWh... from an actively liquid-cooled battery.