The Apple Red Sleeves Reading Device was an e-reader that usually required battery power. If the battery is insufficient, it will cause the Apple Red Sleeves to consume power quickly. Some factors may also cause the battery to run out of power, such as reading a lot of text, using high-power applications, and the screen brightness is too high. Therefore, to extend battery life, it is recommended to reduce battery usage and turn off high-power applications and screen brightness.