[RiseofAsia]

My old laptop was Sony’s Vaio, very good quality, still can use after a decade.

My new laptop Lenovo is small,slim and light, however battery will run out even after I shut down the laptop. Dunt know how to resolve this issues.

Go and update your Laptop Bios or reset your Bios to default mode. See whether it helps.
Use Lenovo App which is normally pre-installed for Bios firmware update.