Juice Pack Battery Case for iPhone 15 vs Outdoor Products Smartphone Watertight Case: which is safer?

Mophie Juice Pack Battery Case for iPhone 15 is the clear pick. Outdoor Products Smartphone Watertight 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

Mpowerd

Outdoor Products Smartphone Watertight Case

PFAS grade

F 40/100

Overall grade

F 0/100

Verdict

Skip

Hazard flags

⚑ 5

Material

Plastic case with waterproof/sealed construction

Confidence

45%

LikelyGasket degradation and microplastic leaching

ReportedPlastic brittleness and cracking over time

PossibleOff-gassing of plasticizers from sealed interior

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