20 13 how to remove the protective case of Peugeot 408 battery?

20 13 Peugeot 408 battery protective case is disassembled as follows.

1. Remove the air filter and the air filter box, remove the pipe connecting the throttle valve with a screwdriver, then remove the air filter upper cover with a plum blossom screwdriver, and shake off the soil on the air filter by the way.

2. Below the air filter is the 6AT gearbox. Pull out the upper cover of the battery obliquely upwards, and then remove the positive terminal with a socket wrench.

3. Next is the small iron sheet on the left side of the battery for fixing. Pay special attention to this thing and don't drop it. It's especially hard to find after dropping it. Remove the positive and negative electrodes. The negative electrode is a tablet. Pull it up and take it off. After the positive and negative electrodes are removed, take out the battery.