Mpowerd · Waterproof Smartphone Cases
Outdoor Products Smartphone Watertight Case
Unknown waterproof treatment method raises concern, skip without clarification.
Mpowerd's watertight phone case uses unspecified waterproofing technology. Brand provides no PFAS disclosure or testing data on materials or coatings used.
The safe swap
Mophie
Mophie Juice Pack Battery Case for iPhone 15
85/100 safety
Same rubric that flunked this product. The swap earned its B.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
Plastic case with waterproof/sealed construction
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
Why this grade
Waterproof / stain-resistant treatment
water-repellent coating treatments have historically used PFAS.
Category baseline
other is a category where PFAS exposure is more common.
No PFAS disclosure
No public statement about PFAS in this product.
The full breakdown
What it's made of and why it matters
Mpowerd's watertight case is injection-molded plastic, likely polycarbonate or ABS, with a sealed gasket system (typically silicone or rubber). The waterproof construction relies on mechanical sealing rather than material permeability, which means chemical durability depends entirely on gasket integrity and plastic brittleness over UV and temperature cycles. No public disclosure exists on whether the sealing treatment or internal coatings contain PFAS-based water repellents, a common but undisclosed practice in outdoor gear.
The brand's record and disclosure
Mpowerd specializes in portable solar and outdoor products but does not publish material safety data sheets, chemical disclosures, or third-party certifications for this case. The company has no established public record of PFAS commitments or transparency initiatives. This silence on waterproofing chemistry is typical of smaller outdoor-gear brands but leaves end-users unable to verify whether legacy aqueous film-forming foams (AFFF) or modern PFAS alternatives were used in manufacturing.
How it compares in its category
Smartphone watertight cases are a crowded market dominated by brands like OtterBox and LifeProof, which also rarely disclose waterproofing methods publicly. Mpowerd's case sits in the mid-tier for price and durability; it does not stand out for transparency. Many competitors use mechanical seals identical in principle, meaning PFAS risk is industry-wide unless manufacturers adopt PFAS-free methods (e.g., wax-based hydrophobic coatings), which remain niche.
If you buy it
Inspect the gasket and seams annually for cracks, wear, or discoloration; replace the case if sealing integrity is compromised, as a failed seal risks both water ingress and potential leaching of degraded plastic into the phone. Avoid prolonged storage in direct sunlight or extreme heat (>50C / 122F), which accelerates plastic embrittlement and gasket hardening. Rinse with fresh water after saltwater or chlorinated exposure to reduce mineral buildup that can degrade seals. Do not assume the case is permanent; plan for replacement every 2-3 years depending on use.
Beyond PFAS: other things we checked
Established hazard classes for this product type, assessed from public information. These never change the PFAS grade; a Likely flag caps the Verdict at “Buy with care.”
Gasket degradation and microplastic leaching
Silicone or rubber gaskets degrade under UV, heat, and flexing, shedding particles into the sealed chamber where they contact skin or food if the case is repurposed. No data on Mpowerd's gasket formulation (whether silicone oil additives or accelerators are used) is publicly available.
Plastic brittleness and cracking over time
User forums document cases developing stress cracks after 1-3 years of outdoor use, particularly in UV-intensive environments. Cracked plastic can shed fragments and compromise waterproofing, exposing the phone to moisture and potential mold growth inside.
Off-gassing of plasticizers from sealed interior
In a sealed, heated case (especially in vehicles or direct sun), plastic may off-gas volatile organic compounds (VOCs) including residual monomers or plasticizers. Mpowerd does not disclose whether the plastic is BPA-free or phthalate-free, so risk cannot be ruled out.
Undisclosed waterproofing chemical composition
The waterproof treatment method is not disclosed by Mpowerd. Industry practice often involves water-repellent surface treatments; if fluorinated (PFAS-based), risk is elevated if the case degrades or is eventually discarded. PFAS-free alternatives exist but require explicit certification.
Mold or bacterial growth in sealed chamber
If the seal is compromised or moisture enters, the warm, dark, sealed environment can harbor mold or bacteria, particularly if the case is not opened and dried regularly. This is not a manufacturing defect but a use-dependent risk that increases with age.
What we don’t know
This grade is a model-based estimate from public materials, coatings, and brand disclosure at 45% confidence. It is not a lab result.
No independent PFAS lab test is on record for this exact product. A lab test could move the score in either direction.
The brand has not made a specific, verifiable PFAS-free statement, so part of this score reflects that missing disclosure rather than a confirmed material.
Formulations and coatings change between production runs. Always check the current label before buying.
Safer alternatives in Waterproof Smartphone Cases
Mophie
Juice Pack Battery Case for iPhone 15
Lithium-ion battery, plastic housing, metal contacts
No known PFAS use; battery cases rarely require fluorinated coatings.
⚠Brand says nothing about PFAS
Mophie
Juice Pack Battery Case for iPhone 15 Pro
Lithium-ion battery, plastic housing, rubber grips
Lower concern. Battery cases lack typical PFAS-prone coatings; no public disclosure available.
⚠Brand says nothing about PFAS
Pelican
Shield Phone Case for Samsung Galaxy S24 Plus
Polycarbonate shell, rubber grip
Lower concern; typical phone case with no known PFAS applications.
⚠Brand says nothing about PFAS
More waterproof smartphone cases grades
How we score: every product runs through the same public 0–100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.