The application of a battery pack in a racing environment is challenging, mainly because the discharge and charge rates are so high.
Perhaps one of the most famous all electric racing programs is Formula E.
Formula E
The Formula E series is designed to push the forefront of EV technology. Hence the specifications get more demanding each year and make a jump in design at each generation. There are now two battery packs that we have explored in detail — the Gen 1 pack (2014-18) and the Gen 2 pack (2019-21) — with a third on the horizon.
Formula 1 is another prominent example. Since the hybrid power units arrived in 2014, the Energy Store has had to fit within minimum and maximum weight limits and a fixed usable-energy window that both get tightened at each regulation change — see Formula 1 Battery Rules for how those constraints translate into achievable pack specifications across the 2014, 2018, 2022 and 2026 rule sets.
See also: Establishing Fast Charge Current Limits, Concentration Polarization: The Hidden Limit on How Fast You Can Charge a Lithium-Ion Cell, 2021 McMurtry Speirling