Intel switched to the highest-end Core Ultra 9 288V for the next series of battery life tests, in which it beat Qualcomm’s X1E-78-100 by 4.5 hours and half an hour in the same two tests.

South Korea's LG Chem said on Wednesday it has filed a patent infringement lawsuit at a Seoul court against a South Korean unit of Chinese battery materials maker Ningbo Ronbay New Energy Technology .