BenchReady — USB-C charging: cable, power and workload MacBook Air (M1, 2020), Apple M1 chip · 2.0.0 Build a one-change-at-a-time charging comparison before replacing an accessory or battery. MODEL FIT Choose Apple menu → About This Mac. Confirm MacBook Air (M1, 2020) and Chip: Apple M1. An Intel processor or another chip does not match. macOS Big Sur or later; Ventura and later call the preferences app System Settings. Diagnostic screens vary by macOS. Excluded: MacBook Air Intel 2020; MacBook Air M2; MacBook Pro M1 PREPARATION [ ] M1 Air confirmed; ports and equipment dry and intact [ ] Work can be saved before a restart [ ] Known compatible USB-C charging cable and adapter [ ] Known working outlet [ ] Keep any existing backup accessible to you. [ ] Keep credentials and personal files outside this record. GUIDE 1. Inspect the adapter, cable and accessible port without inserting a tool. Set damaged equipment aside. Use the model’s USB-C connection; a USB-C shape alone does not establish that a cable can charge. Sources: https://support.apple.com/en-gb/guide/mac-help/-mh29198/mac | https://support.apple.com/en-us/111883; Check the hardware → inspect / different cable; Charging and Expansion 2. Connect directly to a working outlet and Mac, leaving the dock out. Record whether external power is recognized and whether the battery says charging or paused. Sources: https://support.apple.com/en-gb/guide/mac-help/-mh29198/mac; Check the hardware → outlet / power adapter 3. If a compatible spare exists, change the cable while keeping adapter, outlet and workload constant; then restore the baseline before comparing another adapter. Label missing spares Not tested. Sources: https://support.apple.com/en-gb/guide/mac-help/-mh29198/mac; Check the hardware → use a different cable / power adapter; original comparison worksheet 4. Compare the same direct setup during light use. Review the displayed battery-health/charging state; workload and charging optimization can explain a pause without identifying a failed battery. Sources: https://support.apple.com/en-gb/guide/mac-help/-mh29198/mac; Check the software → high performance / battery health 5. Save work before a normal restart if needed. For Apple silicon, Apple’s power-management advice is a restart; do not follow an Intel SMC key sequence. Record whether the symptom returned. Sources: https://support.apple.com/en-gb/guide/mac-help/-mh29198/mac; Check the software → SMC, Apple silicon EVIDENCE TO RECORD Power path: Not recorded External power status: Not recorded Displayed battery state: Not recorded Workload during comparison: Not recorded Direct baseline — Original compatible adapter and charging cable; light use: Not checked One alternative cable — Same outlet and adapter; compatible cable only: Not checked One alternative adapter — Same cable and outlet; compatible adapter only: Not checked STOP CONDITIONS Stop using and charging equipment with swelling, casing separation, smoke, a burning smell or suspected battery damage. Do not open or press on it. Set damaged accessories aside. Do not open mains adapters or force connectors. Do not erase, reset, flash firmware or bypass a lock as a default diagnostic step. OUTCOMES Charging condition recorded: Keep the working setup and displayed charging state as the baseline. - Record direct connection and light-use behavior. - Escalate repeated unexplained drain with this comparison. Keep the accessory comparison: A repeatable difference narrows the next support question; it does not establish which internal part failed. - Set aside the suspect cable/adapter. - Bring both combination results and compatible accessory details to Apple. Request a charging review: Unrecognized power or continued unexplained charging failure needs inspection. - Bring the Mac and affected adapter/cable. - Report power recognition separately from percentage and workload. Establish the charging baseline: Confirm the supplied or compatible charging equipment and a working outlet before a second trial. - Identify adapter compatibility from its documentation. - Leave cable/adapter comparisons not performed clearly marked. Keep the unanswered checks visible: Power recognition, accessory compatibility or charge state is still unknown. Avoid buying a battery from an untested setup. - Share which direct charging combination was tested. - Provide recognized-power, workload and displayed charge-state observations. - Keep unperformed conditions marked Not tested. Ask the provider to confirm these before further changes. Stop the powered checks: Stop using or charging damaged equipment. Keep away from hot or smoking equipment; obtain emergency help for an immediate fire risk. Arrange manufacturer guidance before handling or transport. - Tell Apple about the visible damage before arranging a MacBook Air service. - Share which direct charging combination was tested. - Do not open the case, remove the battery, press a lifted surface, or continue a test to complete this record. SOURCES If your Mac battery will not charge: https://support.apple.com/en-gb/guide/mac-help/-mh29198/mac (Check the software / Check the hardware; checked 2026-10-13) MacBook Air (M1, 2020) technical specifications: https://support.apple.com/en-us/111883 (Charging and Expansion / Display Support; checked 2026-10-13) Important safety information for your Mac: https://support.apple.com/guide/macbook-air/important-safety-information-apd9b8f7aa11/mac (Handling / Built-in battery / Charging; checked 2026-10-13) Identify MacBook Air model: https://support.apple.com/en-ie/102869 (Find model / MacBook Air M1 2020; checked 2026-10-04) Use Apple Diagnostics to test your Mac: https://support.apple.com/en-gb/102550 (Prepare / Apple silicon / Run Apple Diagnostics / Results; checked 2026-10-13) External display dark or low resolution: https://support.apple.com/en-gb/102501 (Connections / Support limits / Detection / Accessory permission; checked 2026-10-13) This is a blank guide. Use the website to save observations and export an importable record. No physical repair has been verified.