Remove the large white plug that connects the wires from the battery to the main board using your hands.

Pull the battery out with your hands.

If the battery is swollen, you might not be able to pull it out with your hands, you might just rip the cables+charging board out.

In this case, follow this additional guide for pushing out the battery. Summarized: You can try to remove the other radiator, unscrew the charging port and gently pull it out just a bit so a large screwdriver's end - without its bits - can fit in and push out the battery from this side.

The port might be hot glued and under the tapes there are very small normal and ribbon cables, so be careful not to cut or rip them.