Electrical Engineering Report - Public Summary (Redacted)

Air Vision Systems | Public Summary (Redacted)

Contents:

1. 1. Scope of review
2. 2. Products reviewed (public)
3. 3. Fuse rating assessment (public)
4. 4. Electrical architecture (public)
5. 5. Cable-length guidance (public)
6. 6. Continuous-use suitability
7. 7. Engineering statement

1. Scope of review

This assessment reviews two OEM cigarette-lighter DC adapter products intended to power the Starlink Mini from nominal 12 V / 24 V sources. The review considers fuse selection, continuous-use suitability of typical vehicle sockets, and high-level cable-length capability under conservative assumptions. Detailed calculations and factory correspondence are withheld.

2. Products reviewed (public)

Two adapter classes were reviewed: a lower-power ~60 W class and a higher-power ~105 W class. Both use an inline / external DC-DC step-up converter producing a higher-voltage output for reduced current in the output cable. Specific supplier identifiers, part numbers, and internal build details are withheld.

3. Fuse rating assessment (public)

A change from a 20 A fuse to a 15 A inline fuse is generally appropriate for cigarette-lighter applications, subject to the vehicle socket rating and the adapter's tested input current.

• Most automotive cigarette-lighter sockets are rated approximately 10-15 A continuous; a 20 A fuse can exceed the safe thermal envelope of many sockets.
• A 15 A fuse better protects the vehicle socket, input wiring, and converter during faults or sustained high load.
• Fuse placement should be close to the vehicle socket / battery feed point and sized to protect the cable/harness.

4. Electrical architecture (public)

Both products locate the DC-DC conversion close to the 12 V / 24 V source. This is best practice because it minimises high-current losses on the low-voltage side, reduces heating at the cigarette-lighter plug, and allows higher-voltage transmission over longer output cable runs.

5. Cable-length guidance (public)

Public guidance is presented using conservative assumptions (full rated power, allowance for connector resistance, thermal rise, and tolerances). Exact voltage-drop tables and calculation steps are withheld.

Cable-length capability depends on output voltage, cable gauge, connector quality, and ambient temperature. Validate performance for each installation, especially for continuous operation.

• 60 W class adapter: suitable for standard vehicle-use cable lengths, including longer runs when operated at or below rated output (exact voltage-drop limits withheld).
• 105 W class adapter: suitable for standard lengths; for longer runs at high output, the output cable gauge becomes the limiting factor unless upgraded.
• At typical Starlink Mini operating power (often well below maximum adapter rating), longer cable runs may be feasible; verify performance for your specific installation.

6. Continuous-use suitability

For continuous operation, ensure the vehicle socket and plug remain within safe temperature limits. Avoid worn or loose sockets, and prefer direct battery wiring with a robust connector for long-duration use where practical.

7. Engineering statement

This review represents a good-faith engineering assessment based on supplied specifications, product images, and established electrical design principles. Final compliance remains subject to production consistency and installation practices. This public summary is general guidance and is not a substitute for project-specific sign-off by a qualified electrician.