The cells provided an engineering challenge because each has a relatively low capacity, so thousands needed to be bundled together in a battery pack. Electrical and thermal management also proved to be a challenge, requiring liquid cooling and an intumescent fire prevention chemical.
The cells presented significant technical difficulties because of their limited energy storage capacity, requiring large numbers to be bundled together in a battery pack. The management of electrical and thermal issues also posed considerable challenges, necessitating the use of liquid cooling and an intumescent fire prevention chemical.