The alphanumeric code refers to a specific hardware revision code printed on internal printed circuit boards (PCBs), most notably associated with multi-functional portable electronics like power banks and vehicle jump starters.
The "QC18W" designation suggests this unit is designed to output 5V/3A, 9V/2A, or 12V/1.5A. In testing similar v1.3 revisions of this hardware class: Cjs02-qc18w-v1.3
: Continually monitor internal heat buildup to prevent the adapter from damaging your vehicle dashboard or melting its premium plastic shell. The alphanumeric code refers to a specific hardware
User reviews for the SUAOKI CJS02 (and similar products) show a mix of experiences: Cjs02-qc18w-v1.3