Handheld · Power

Battery Life Calculator

Estimate playtime at each TDP level, based on the device's real battery capacity.

Formula: runtime = (battery Wh × efficiency) ÷ (TDP + system overhead). Battery capacities come from manufacturer specs or verified teardown data; devices marked "≈" use community-sourced figures and may differ from your actual unit. Results are estimates only — real runtime also depends on screen brightness, network use, and overall system load.