The steps to replace the battery of the thermos cup are as follows:
1. Supor temperature display thermos cup uses CR2032 battery.
2. Loosen the screws at the bottom of the thermos cup, and then remove the bottom cover.
3. Find the battery slot on the bottom cover.
4. Use your fingers or tools to gently press the battery and take out the old battery from the battery slot.
5. Take out a new CR2032 battery and make sure the positive and negative poles are in the correct direction
6. Put the new battery into the battery slot, making sure the positive pole is facing up.
7. Reinstall the bottom cover and tighten it with screws. Make sure the screws are tight, but do not use excessive force to avoid damaging the thermos cup.