Placing the battery in the forklift | Treatment Plant Walkthrough Resident Evil Zero HD Guide

Walk carefully through the area where previously you found Billy - a toad can appear there now

Remain in the room where you obtained the battery and select the stairs that will let you reach the room on the upper floor (where previously you obtained items needed for crafting the battery) (M6,21). Now you can select the northern door (the ones next to the blue container). You will reach the area where previously while playing as Rebecca you saved Billy (M6,10). A lurker can appear there, so be careful on your way to the next door.

Use the well known stairs with leeches (M6,9) and walk through the room where you have solved the riddle with chests (M6,8). You will reach the room with a forklift (M6,7). Walk towards it from the right and after positioning yourself in the place shown on the picture open inventory and select the Hi-Power Battery.

Climb as Rebecca on the chest and then activate the forklift

Don't activate the forklift immediately. Separate the characters and climb as Rebecca on the chest that is on the lift of the vehicle. Now switch to Billy and activate the forklift. Rebecca will reach the upper rock ledge where she will find the Keycard.

Watch out for new zombies from the recreation room!

Important - Soon you will participate in few final battles of the game. It would be a good idea to prepare properly for them. Most of all, you should save your game. It can be done in the room where you were powering the facility up. In order to reach the typing machine first use the stairs located in the room with the forklift. Watch out for new zombies in the room with pool table (M6,6). Run through successive rooms and corridors and at the end use the small lift (M6,4).

In addition to saving the game (M6,3), make sure that Billy and Rebecca have enough ammunition in their equipment (especially for Magnum and the grenade launcher) and that each of them has at least one healing item (herbs or spray).