LG BUEL011HBC1 Installation Manual page 27

Stacks the remaining battery modules inside the enclosure and fix them with supplied nuts
D
referring to previous step. Nut assembling positions are indicated in the figure.
Total number of battery modules may differ depending on your model.
Remove protective labels and covers on the power connector of the battery modules.
E
Do not touch the terminals after removing the protective label and cover.
Installation
Protective label
27