[SPOILERS] How do I get the battery?

[Incia3000]

I finished this game ones without knowing what I was doing (never accessed the bunker), then I replayed the game a second time by opening the bunker and also acquiring the battery that's inside the house. Now on my third playthrough I'm inside the bunker but I have no battery?
What did I do wrong?
Do I really have to replay the game 2 times again because I might encountered a bug?

[Incia3000]

Bump?

[Poppi Cat]

You need to pick it up every playthrough. It’s in the room on the table after Carver breaks the window.

[Incia3000]

Originally posted by blair witch:

You need to pick it up every playthrough. It’s in the room on the table after Carver breaks the window.

I did that.

Well okay then, thanks for absolutely nothing I guess.

[Incia3000]

Bumping this cause i think I will report this as a big bug instead.

So basically when you get to the house and pick up the battery, and I guess if you die at any point inside the house and load up a save or checkpoint, none of the collectables including the battery is saved. Just watched someone else do this secret ending and he has the battery in his second playthrough. But I've never got that.

So yeah, the game screwed up on me, so now starting a new playthrough I don't have the battery in my inventory EVEN when I picked it up in the house TWICE, so please fix the checkpoints and saves to actually SAVE what you pick up in the game. I won't bother replaying the game anymore just for that one stupid achievement. It's enough I've played it through twice only to achieve nothing.