After days of diagnostic work, having tried 3 different 3rd party aftermarket batteries, here's my conclusion: 3rd party batteries such as BTI batteries are "physically compatible" with the HP Omen X 2S 15-dg0020nr, but they are incompatible at the firmware level. They might work with less demanding laptops, but not with high-wattage dual screen HP Omen X laptops. Here's what I think happens:

• SMBus handshake failure: The BTI/aftermarket controller passes basic detection but fails to properly report real-time telemetry (such as cell temperature or instantaneous wattage draw) back to the laptop's EC.
• Hard shutdowns: When the system switches from AC adapter power to battery power, the EC detects an unsupported or out-of-spec power reading from the aftermarket BTI gas-gauge chip and triggers a hard shutdown within seconds to protect the dual-screen motherboard.

To make matters worse, even if I try to use the laptop with the AC adapter while 3rd party battery is installed, the EC trips the system's BD PROCHOT safety signal because it doesn't recognize the battery as a genuine HP battery, which throttles the CPU clock speed down to 0.8 GHz and locks it there, rendering the laptop so sluggish it becomes practically useless.

If you know a workaround other than buying a genuine HP from eBay (no inventory elsewhere), or having to re-cell the battery (micro-soldering 6 new pouch cells into the old battery pack, a difficult and potentially dangerous task), I would love to hear your thoughts.

⟐ Commented August 14, 2026 at 9:40 MST

⟐ Answered October 03, 2023 at 6:50 MST

⟐ Answered October 02, 2023 at 22:02 MST