30000mAh Waterproof Solar Charger & Solar Power Bank- 18 W Wireless Phone Charger - 6 Outputs & Type-C Input & Output - vs Techsmarter 20000mAh Portable Phone Charger Power Bank: which is safer?

Techsmarter 20000mAh Portable Phone Charger Power Bank is the clear pick. 30000mAh Waterproof Solar Charger & Solar Power Bank- 18 W Wireless Phone Charger - 6 Outputs & Type-C Input & Output - carries a failing PFAS grade, and we never recommend buying a failing product.

Samsung

30000mAh Waterproof Solar Charger & Solar Power Bank- 18 W Wireless Phone Charger - 6 Outputs & Type-C Input & Output -

PFAS grade

F 45/100

Overall grade

F 23/100

Verdict

Skip

Hazard flags

⚑ 4

Material

Plastic housing with unspecified waterproof coating

Confidence

35%

PossibleWaterproof coating composition (PFAS or alternative)

PossiblePlastic housing additives (flame retardants, plasticizers, UV stabilizers)

ReportedVolatile organic compound (VOC) off-gassing from internal electronics and adhesives

Why this grade

Our pick

Samsung

Techsmarter 20000mAh Portable Phone Charger Power Bank

PFAS grade

B 85/100

Overall grade

C 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

Why this gradeBuy

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