Hey! Sorry you're encountering a bug. I'm having trouble reproducing the issue as you've described it.
When the battery bar(purple progress bar) reaches 0 you should see:
- Knock out animation plays
- Inventory items reset to 0
- Battery bar resets to 100%
- Battery bar continues ticking down
If I'm understanding correctly, the last bullet point isn't occurring for you? Let me know if I'm misunderstanding. Thanks for playing and reporting the bug!