Molicel P42A Lithium Ion Cell

Highly regarded as the best cell on the market for high power applications (until being taken over by its newer variant the P45B which is currently about triple the price).

Used by companies like NASA, commonly used in performance upgraded batteries for Sur Ron Lite Bee, High Power E-Skate applications.

Extremely low voltage sag due to very low internal resistance.

Specs:
Capacity : 4200mah
Discharge : 45 Amps Continuous (until temp threshold)
Very impressive Cycle Life

These are Grade A cells