UltraCharge Pro 10K Power Bank vs Techsmarter 20000mAh Portable Phone Charger Power Bank: which is safer?
Belkin UltraCharge Pro 10K Power Bank is our pick: better on PFAS and on the overall hazard picture.
Our pick
Belkin
UltraCharge Pro 10K Power Bank
PFAS grade
Excellent 85/100
Overall grade
Excellent 81/100
Verdict
Buy
Hazard flags
⚑ 1
Material
lithium-ion battery, plastic housing, circuit board
Confidence
72%
PossibleLithium-ion thermal runaway (overcharge/short circuit)
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
Where these two actually differ
- We flag Lithium-ion thermal runaway (overcharge/short circuit) on the Belkin 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 Belkin.
- The Belkin is lithium-ion battery, plastic housing, circuit board where the Samsung is Lithium-ion battery, plastic housing, circuit board components, 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.
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