https://wccftech.com/exynos-2100-vs-snapdragon-888-galaxy-s21-ultra-battery-drain-test/

The Exynos 2100 is a major step-up from the Exynos 990, and from what we’ve seen in a previous speed test, it gives a fair amount of competition to the Snapdragon 888 when running in the Galaxy S21 Ultra. However, how does battery life fair when Samsung’s latest and greatest mobile silicon runs in its flagship? Let us find out.

The battery drain test was performed by PBKReviews, and the Galaxy S21 Ultra powered by the Exynos 2100 came out on top with 89 percent battery remaining. The version with the Snapdragon 888; it had 87 percent battery life remaining. While that’s not a massive difference, it shows the improvements Samsung has made with just a single generation.