xiaomi yi smart dash

Hey i just bought the camera model YCS.1015.INT and was wondering how long the camera can stay on using only the battery? For me it stays on for a very short time before it shuts off (fully charged and manually turning on without a power source).

I use Yi Smard Dash Cam v-1.03.034-CN, it have problem daytime When it is very brightness . It can not look at digital numbers normally. If the sun's brightness is low or at night, it can be seen as normal. Who has this problem? And how to fix it? I update firmware update already and it's...