TL;DR: Good in PD 3.1 spec; some PD 2.0 issues.
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How to Get More ADC Bits
TL;DR:
By oversampling. Using the same ADC, some USB testers can detect 0.0001V while others cannot.
Read More »USB-C 240W EPR USB4 Cable Review Part 1
TL;DR: Good in PD 3 spec; found and reported some PD 2.0 issues.
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Apple 140W USB-C PD 3.1 EPR Power Adapter, Part 1 – How It Charges a 16-Inch MacBook Pro 2021
TL;DR:
The USB-C to MagSafe 3 cable acted as a special PD EPR trigger.
- USB-C plug attached to power adapter
- Cable requested 5V @ 0.1A
- MagSafe 3 connected to MacBook
- MacBook requested 20V @ 4.7A
- Entered EPR Mode
- MacBook requested 28V @ 4.71A
- MacBook requested 28V @ 5A
- MagSafe 3 disconnected from MacBook
- Hard Reset
- Cable requested 5V @ 0.1A
Kovol Sprint 120W PD 4-Port GaN Desktop Charger KV-PC001 Review
TL;DR:
Pros:
- Very compact size
- Good performance on Type-C ports
- Not bad heat dissipation
Cons:
- Violation of PD specification.
- High protection current at 20V 5A power level
- High output voltage ripple on QC (Type-A) ports
USB Charging 