Techsmarter 20000mAh Portable Phone Charger Power Bank vs Techsmarter Waterproof Rugged Laptop Power Bank: which is safer?
Techsmarter 20000mAh Portable Phone Charger Power Bank is the clear pick. Techsmarter Waterproof Rugged Laptop Power Bank carries a failing PFAS grade, and we never recommend buying a failing product.
Our pick
Samsung
Techsmarter 20000mAh Portable Phone Charger Power Bank
PFAS grade
Excellent 85/100
Overall grade
Excellent 77/100
Verdict
Buy
Hazard flags
⚑ 2
Material
Lithium-ion battery, plastic housing, circuit board components
Confidence
72%
PossibleLithium-ion thermal runaway and fire risk
PossibleBattery leakage or electrolyte exposure if damaged
Samsung
Techsmarter Waterproof Rugged Laptop Power Bank
PFAS grade
Poor 40/100
Overall grade
analysis pending
Verdict
pending
Hazard flags
none flagged
Material
Plastic body with unspecified waterproof coating
Confidence
45%
Where these two actually differ
- 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 Lithium-ion battery, plastic housing, circuit board components where the Samsung is Plastic body with unspecified waterproof coating, 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 45% confidence against 72%, because it discloses less.
Both products run through the same public rubric: materials, coatings, brand disclosure, lab findings, and recalls, plus a beyond-PFAS hazard analysis. Grades are model-based estimates, not lab tests. How grades work →
More waterproof phone chargers & cables: see the full ranking