Juice Pack Battery Case for iPhone 15 vs Waterproof Phone Case: which is safer?

Mophie Juice Pack Battery Case for iPhone 15 is the clear pick. Waterproof Phone Case carries a failing PFAS grade, and we never recommend buying a failing product.

Our pick

Mophie

Juice Pack Battery Case for iPhone 15

PFAS grade

B 85/100

Overall grade

C 73/100

Verdict

Buy

Hazard flags

⚑ 3

Material

Lithium-ion battery, plastic housing, metal contacts

Confidence

65%

PossibleLithium-ion battery thermal runaway risk

PossibleElectromagnetic field exposure

PossibleCounterfeit or degraded battery cell defects

Why this gradeBuy

Waterproof Case Co.

Waterproof Phone Case

PFAS grade

F 40/100

Overall grade

F 24/100

Verdict

Skip

Hazard flags

⚑ 4

Material

Unspecified waterproof coating/polymer

Confidence

35%

PossiblePhthalates or other plasticizers in substrate/adhesives

PossibleVolatile organic compounds (VOCs) from coating or substrate degradation

PossibleContact dermatitis from unidentified coating or adhesives

Why this 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 smartphone cases: see the full ranking