FIELD GUIDESource-led reference

P166 / Charging and power / Guide

Make a reviewable charging checklist

Source output, occupied ports, requested power and cable evidence are separate.

The useful distinction

Read the exact adapter model, port labels and cable markings.

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

Guide note · not an individual product specification

The useful distinction

Understand the requirement.

Export the assumptions and missing evidence, not a compatibility verdict. [C166A]

The public-reference preview includes model references, anonymous targets, observations, calculations and selected source locators. It excludes private workspace collections, serial numbers and personal notes. [C166B]

Bounded facts, visible unknowns

Specifications and limits

Make a reviewable charging checklist facts and limitations
Workflow boundaryOne documented source, direct outputs, anonymous target assumptions. [C166A] [C166B]
Verified device listNot included. Check exact device and accessory documentation.
A boundary, not an omission to guess around.

A within-ceiling result is conditional on the selected documentation. Unverified occupancy, an unknown cable or missing fixed-profile evidence remains unresolved even when the numbers fit.

Before you connect

What to check

  1. Identify the source model and each connected port.
  2. Keep wattage and fixed-voltage requests separate.
  3. Keep unknown cable and occupancy evidence visible.
Trace a supported connection class →

Prepare deliberately

The public-reference preview includes model references, anonymous targets, observations, calculations and selected source locators. It excludes private workspace collections, serial numbers and personal notes.

Preserve your real workspace separately

A charging reference is not an editable workspace backup. Report validation rechecks its date, inputs and relevant evidence before export or printing; it never restores or overwrites saved connections.

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.

C166ASource checked · pending review

Export the assumptions and missing evidence, not a compatibility verdict.

Raspberry Pi · 27W USB-C Power Supply — product specification ↗

Locator: Introduction; Specification
Access: public page. Factory cable assembly only. No extension, modified lead, negotiated runtime or universal device-support inference.

S162: full source recordInspect review dependencies → (private workspace)

Claim scope: Source-scoped charging reference and worksheet boundary; no electrical approval, forced mode or battery-speed prediction.. Next review due 2027-01-01.

C166BSource checked · pending review

The public-reference preview includes model references, anonymous targets, observations, calculations and selected source locators. It excludes private workspace collections, serial numbers and personal notes.

Raspberry Pi · 27W USB-C Power Supply — product specification ↗

Locator: Introduction; Specification
Access: public page. Factory cable assembly only. No extension, modified lead, negotiated runtime or universal device-support inference.

S162: full source recordApple · Fast charge your MacBook Air or MacBook Pro — model and cable conditions ↗

Locator: 16-inch MacBook Pro; testing limitations
Access: public page. Preserve the narrower support scope against broad store wording. No automatic fast-charge decision, charge-time forecast or battery-state model is implemented.

S168: full source recordInspect review dependencies → (private workspace)

Claim scope: Source-scoped charging reference and worksheet boundary; no electrical approval, forced mode or battery-speed prediction.. Next review due 2027-01-01.

Suggest a correction to this field note →

Charging and power

Keep the power path separate.

Source ceilings, occupied ports, voltage-specific requirements and cable observations need distinct evidence.

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

S162 · 27W USB-C Power Supply — product specification

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

Within inspection window

Scoped support: The 5.1V, 5A output is 25.5W. Other listed modes are 9V/3A, 12V/2.25A and 15V/1.8A. The 27W product name is not a claim of 27W at 5.1V.

Not established / limitations: Factory cable assembly only. No extension, modified lead, negotiated runtime or universal device-support inference.

Locator: Introduction; Specification

S168 · Fast charge your MacBook Air or MacBook Pro — model and cable conditions

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

Within inspection window

Scoped support: The support article distinguishes the MagSafe path from a USB-C charging-cable path restricted to November 2023 or later 16-inch models.

Not established / limitations: Preserve the narrower support scope against broad store wording. No automatic fast-charge decision, charge-time forecast or battery-state model is implemented.

Locator: 16-inch MacBook Pro; testing limitations

Trace 2 claims to their source records

C166A · P166

Export the assumptions and missing evidence, not a compatibility verdict.

Claim scope: Source-scoped charging reference and worksheet boundary; no electrical approval, forced mode or battery-speed prediction.

Source links: S162 · Evidence trail → (private workspace)

C166B · P166

The public-reference preview includes model references, anonymous targets, observations, calculations and selected source locators. It excludes private workspace collections, serial numbers and personal notes.

Claim scope: Source-scoped charging reference and worksheet boundary; no electrical approval, forced mode or battery-speed prediction.

Source links: S162 · S168 · 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.