Nautical Slim Waterproof Case for Apple iPhone 15 vs Juice Pack Battery Case for iPhone 15 Pro: which is safer?

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

Ghostek

Nautical Slim Waterproof Case for Apple iPhone 15

PFAS grade

F 40/100

Overall grade

F 24/100

Verdict

Skip

Hazard flags

⚑ 4

Material

Polycarbonate/thermoplastic with waterproof coating (unspecified)

Confidence

35%

PossibleBPA leaching from polycarbonate

PossibleUnidentified waterproof coating composition

PossibleMicroplastics from coating degradation

Why this grade

Our pick

Mophie

Juice Pack Battery Case for iPhone 15 Pro

PFAS grade

B 85/100

Overall grade

C 77/100

Verdict

Buy

Hazard flags

⚑ 2

Material

Lithium-ion battery, plastic housing, rubber grips

Confidence

72%

PossibleLithium-ion battery thermal runaway

PossibleMicroplastic shedding from wear

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 smartphone cases: see the full ranking