FIELD GUIDESource-led reference

P172 / Charging and power / Guide

Build a reviewable device-power worksheet

Start with the exact device, identify the goal, then compare source and cable evidence.

The useful distinction

Identify the exact model and evidence category before comparing numbers.

Claim inspection dates: 2026-10-03 · Independent review pending

Guide note · not an individual product specification

The useful distinction

Understand the requirement.

Create a source-scoped investigation without manufacturing a compatibility verdict. [C172A]

Apple’s Mac fast-charge documentation distinguishes adapters, cable paths and model scope rather than defining one universal setup for every Mac. [C172B]

Bounded facts, visible unknowns

Specifications and limits

Build a reviewable device-power worksheet facts and limitations
ScopePublic-reference investigation, not live hardware or independent approval. [C172A] [C172B]
Verified device listNot included. Check exact device and accessory documentation.
A boundary, not an omission to guess around.

The worksheet report is a public-reference snapshot, not a private inventory or editable backup. A changed input, source, dataset or assessment day requires a fresh preview. No settings are changed and no hardware is operated.

Before you connect

What to check

  1. Confirm the exact model and source scope.
  2. Distinguish recommendation, example and included supply from actual demand.
  3. Leave missing input or cable evidence unknown.
Trace a supported connection class →

Know what is still missing

No live power negotiation, PPS curve, temperature, battery state or charge-time prediction is modeled. Cable voltage drop and physical condition are not measured. Independently review technical facts before public launch.

Your next step

Move from the form to the requirement.

The source trail

Evidence for this page

AI-assisted inspection is not independent engineering review. Source scope and access limitations are disclosed below. Procedural checklists are editorial requirements, not hardware measurements.

C172ASource checked · pending review

Raspberry Pi’s power guidance makes supply-current and peripheral allowances explicit rather than treating a headline wattage as sufficient context.

Raspberry Pi · Computer hardware — recommended power supplies ↗

Locator: Power supply; Recommended power supplies; Raspberry Pi 5
Access: public page. Power sections only. These are supply recommendations, not measured consumption or a complete operating envelope. No voltage tolerance, PPS requirement, wiring or firmware change is inferred.

S170: full source recordApple · Fast charge your MacBook Air or MacBook Pro ↗

Locator: MacBook Air; 14-inch MacBook Pro; USB-C charge cable paths
Access: public page. Applied only to the exact 2022-or-later Air and 14-inch Pro models in this sidecar. Named examples are not universal minimum wattages; other adapter, display and MagSafe paths are not assessed. Charge-time test conditions are not predictions.

S171: full source recordInspect review dependencies → (private workspace)

Claim scope: Exact manufacturer/model wording as scoped by the linked source; not a compatibility approval.. Next review due 2027-01-01.

C172BSource checked · pending review

Apple’s Mac fast-charge documentation distinguishes adapters, cable paths and model scope rather than defining one universal setup for every Mac.

Raspberry Pi · Computer hardware — recommended power supplies ↗

Locator: Power supply; Recommended power supplies; Raspberry Pi 5
Access: public page. Power sections only. These are supply recommendations, not measured consumption or a complete operating envelope. No voltage tolerance, PPS requirement, wiring or firmware change is inferred.

S170: full source recordApple · Fast charge your MacBook Air or MacBook Pro ↗

Locator: MacBook Air; 14-inch MacBook Pro; USB-C charge cable paths
Access: public page. Applied only to the exact 2022-or-later Air and 14-inch Pro models in this sidecar. Named examples are not universal minimum wattages; other adapter, display and MagSafe paths are not assessed. Charge-time test conditions are not predictions.

S171: full source recordInspect review dependencies → (private workspace)

Claim scope: Exact manufacturer/model wording as scoped by the linked source; not a compatibility approval.. Next review due 2027-01-01.

Suggest a correction to this field note →

Evidence behind this page

Scope first. Source second. Approval separate.

2 linked sources · 2 scoped claims · 0 sources with inspection/access flags.

Page scope: consumer_reference_expansion

Assessment 2026-10-22 · earliest scheduled source review 2027-01-01. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 2 source scopes, access limits and dates

S170 · Computer hardware — recommended power supplies

Raspberry Pi · Manufacturer / product-owner domain · inspected 2026-10-03 · due 2027-01-01

Within inspection window

Scoped support: The power section specifies 5.1 V supplies, recommends 3 A for Pi 4 Model B and 5 A for Pi 5, and distinguishes the Pi 5 peripheral allowance under 3 A and 5 A supplies.

Not established / limitations: Power sections only. These are supply recommendations, not measured consumption or a complete operating envelope. No voltage tolerance, PPS requirement, wiring or firmware change is inferred.

Locator: Power supply; Recommended power supplies; Raspberry Pi 5

S171 · Fast charge your MacBook Air or MacBook Pro

Apple · Manufacturer / product-owner domain · inspected 2026-10-03 · due 2027-01-01

Within inspection window

Scoped support: For supported MacBook Air generations Apple lists particular Apple adapters including 70 W and 140 W. The 14-inch Pro list includes 96 W and 140 W adapters. USB-C charge cable paths are listed separately from MagSafe paths.

Not established / limitations: Applied only to the exact 2022-or-later Air and 14-inch Pro models in this sidecar. Named examples are not universal minimum wattages; other adapter, display and MagSafe paths are not assessed. Charge-time test conditions are not predictions.

Locator: MacBook Air; 14-inch MacBook Pro; USB-C charge cable paths

Trace 2 claims to their source records

C172A · P172

Raspberry Pi’s power guidance makes supply-current and peripheral allowances explicit rather than treating a headline wattage as sufficient context.

Claim scope: Exact manufacturer/model wording as scoped by the linked source; not a compatibility approval.

Source links: S170 · S171 · Evidence trail → (private workspace)

C172B · P172

Apple’s Mac fast-charge documentation distinguishes adapters, cable paths and model scope rather than defining one universal setup for every Mac.

Claim scope: Exact manufacturer/model wording as scoped by the linked source; not a compatibility approval.

Source links: S170 · S171 · Evidence trail → (private workspace)

Prepare this page for review → (private workspace)Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.