This type of usage is a shallow type of duty cycle, in that it provides a short burst of a large amount of current, and that's what car batteries are specifically designed to do.
Ụdị ojiji a bụ ụdị ntụgharị ọrụ na-adịghị emighị emi, n'ihi na ọ na-enye obere oge nke nnukwu ego nke ugbu a, nke ahụ bụkwa kpọmkwem ihe batrị ụgbọ ala na-ezubere iji mee.