25W Super Fast Charging Wall Charger vs Waterproof Rugged Laptop Power Bank: which is safer?

Where these two actually differ

• We flag Electrical/thermal safety (design integrity) and Manufacturing contamination or counterfeit units on the Samsung and not on the Techsmarter.
• We flag Plastic body leaching (BPA/BPS from polycarbonate or phthalates from lower-grade polymers), Microplastic shedding from surface wear, Heavy metals in internal circuit board components (lead in solder, cadmium in battery elec and Seal degradation over time exposing internal components on the Techsmarter and not on the Samsung.
• The Samsung is plastic housing, internal circuits, ceramic capacitors where the Techsmarter is Plastic body, which is most of the difference in these two grades.
• These two are level, close enough that price and fit should decide it rather than our grade.
• We are less certain about the Techsmarter grade, at 45% confidence against 78%, because it discloses less.