Solar Charger Power Bank vs Techsmarter 20000mAh Portable Phone Charger Power Bank: which is safer?

Where these two actually differ

• We flag Lithium-ion battery thermal runaway / fire risk, Adhesive and epoxy leaching / offgassing, Plastic housing degradation and microplastic release and Waterproof sealant PFAS leaching into water contact on the Samsung and not on the Samsung.
• We flag Lithium-ion thermal runaway and fire risk and Battery leakage or electrolyte exposure if damaged on the Samsung and not on the Samsung.
• The Samsung is Plastic housing, Li-ion battery, solar panel with adhesive/epoxy, likely waterproof sealant where the Samsung is Lithium-ion battery, plastic housing, circuit board components, which is most of the difference in these two grades.
• The gap is 45 points, wide enough that this is not a close call, and the Samsung is the one to buy.
• We are less certain about the Samsung grade, at 42% confidence against 72%, because it discloses less.