Non-Toxic Phone Battery Cases, ranked by PFAS grade
You may also be interested in
Top-graded picks in the categories readers replace first, every one scored on the same rubric.
- polypropylene filter housing, carbon/sediment cartridge
- We found no PFAS statement from the brand
- Bacterial growth in spent cartridges
3 hazards checked on this product, all on its full breakdown.
Aquasure
Premier Series 75 GPD Under Sink Reverse Osmosis Water Filtration System
- RO membrane, carbon filters, stainless steel housing
- We found no PFAS statement from the brand
- Bacterial and microbial growth in housing and filters
4 hazards checked on this product, all on its full breakdown.
Avocado
Vegan Mattress
- organic cotton, natural latex, coconut coir, recycled steel coils
- The brand calls it PFAS-free, which we have not verified
- Heavy metals
2 hazards checked on this product, all on its full breakdown.
71 of the 75 phone battery cases PFAS Authority has graded reach its 70 point pass mark for PFAS and other toxins, 94.7% of the category, as of October 2026, and 4 score below it. The highest graded is Swatch Omega X Swatch Mission To Moon Quartz at 85 out of 100.
The full ranking is below, best-graded first, with every score linking to the evidence behind it.
Are phone battery cases safe?
71 of the 75 phone battery cases we graded come back low-concern on our screen and 4 do not. Our grades are model-based assessments built from published materials, ingredient lists, certifications and brand disclosures, not laboratory tests, so they say what we can evidence rather than that anything is safe.
Best graded phone battery cases here
- 1Swatch Omega X Swatch Mission To Moon Quartz 85 out of 100
- 2Mophie Juice Pack Battery Case for iPhone 15 Pro 85 out of 100
- 3Motorola Moto Silicone Sport Watch Band 85 out of 100
Start here
The best non-toxic waterproof smartphone cases, ranked by grade
Waterproof Smartphone Cases, ranked.
The quickest read, what to skip and the top-graded picks worth buying instead.
Motorola
Moto Nylon Canvas Sport Waterproof Watch Band Bracelet Strap Green / 22mm
Waterproof nylon band; coating type undisclosed, skip if PFAS-sensitive.
Swatch
Omega X Swatch Mission To Moon Quartz
Lower concern; standard materials without typical PFAS treatments.
Why Swatch Omega X Swatch Mission To Moon Quartz wins, and what it beats
Every grade on this page is one sum. A category starts from a baseline, each disclosed material or coating adds risk points, and each thing the brand or a third party has published takes them away. Below is that sum for the winner, then for 1 product it beats, so you can see exactly where the 45 points between the top and the bottom of this waterproof smartphone cases ranking come from.
The winner
Made of Quartz crystal, stainless steel case, resin band.
- +15No PFAS disclosure. No public statement from the brand about PFAS in this product.
- +10Category baseline. The starting point for this type of product, before anything specific to this product is counted.
- -10Base material not linked to PFAS. The main material recorded for this product is not one associated with PFAS.
15risk points in total, which is a grade of 85
What the grade does not fix. It still carries one risk factor, No PFAS disclosure, and our graders recorded 3 other hazards on it. See the full breakdown.
What it beats, and why
What puts it behind. Waterproof / stain-resistant treatment, +35 points. Water-repellent coating treatments have historically used PFAS. The winner carries no such factor.
Made of nylon canvas with waterproof coating (unspecified).
- +35Waterproof / stain-resistant treatment
- +15No PFAS disclosure
- +10Category baseline
60risk points, a grade of 40
No product on this page was physically tested by us. Every number above comes from published materials, ingredient and coating disclosures, certifications and brand statements, scored on one public rubric. Formulations change without notice, so check the current product listing before buying.
Which waterproof smartphone cases are PFAS-free? Good or Excellent, best-graded first
- Quartz crystal, stainless steel case, resin band
- We found no PFAS statement from the brand
- Resin band VOC off-gassing
3 hazards checked on this product, all on its full breakdown.
- Lithium-ion battery, plastic housing, rubber grips
- We found no PFAS statement from the brand
- Lithium-ion battery thermal runaway
2 hazards checked on this product, all on its full breakdown.
- silicone elastomer
- We found no PFAS statement from the brand
- Bacterial or fungal growth from moisture retention
Motorola
Moto Silicone Watch Band Sports Strap Replacement Bracelet Black 1 / 20MM
- Silicone elastomer (no coating disclosed)
- We found no PFAS statement from the brand
- Microplastic shedding or coating degradation over time
2 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Polypropylene and thermoplastic elastomer (phone case)
- Phthalates
2 hazards checked on this product, all on its full breakdown.
- Polycarbonate shell, rubber grip
- Polycarbonate thermal degradation and leaching
4 hazards checked on this product, all on its full breakdown.
- Stainless steel case, mineral/plastic crystal, standard watch components
- We found no PFAS statement from the brand
- Mineral crystal breakage and laceration
2 hazards checked on this product, all on its full breakdown.
- Stainless steel case, plastic/resin components, mineral glass
- We found no PFAS statement from the brand
- Plastic/resin component degradation
3 hazards checked on this product, all on its full breakdown.
- Stainless steel case, plastic/resin band, mineral or acrylic crystal
- We found no PFAS statement from the brand
- Plastic band degradation and fragmentation
2 hazards checked on this product, all on its full breakdown.
- Plastic watch case and resin strap
- We found no PFAS statement from the brand
- Volatile Organic Compound (VOC) off-gassing from new plastic
- Plastic/resin watch case and strap
- We found no PFAS statement from the brand
- Polymer degradation and microparticle shedding
2 hazards checked on this product, all on its full breakdown.
- Lithium-ion battery, plastic housing, metal contacts
- We found no PFAS statement from the brand
- Lithium-ion battery thermal runaway risk
3 hazards checked on this product, all on its full breakdown.
- Rubber/silicone strap, elastomer band
- We found no PFAS statement from the brand
- Silicone degradation and particulate shedding
4 hazards checked on this product, all on its full breakdown.
- Plastic band, metal buckle
- Nickel allergen (metal buckle)
3 hazards checked on this product, all on its full breakdown.
- Plastic band, elastomer strap
- Elastomer degradation and skin irritation
2 hazards checked on this product, all on its full breakdown.
- Aluminum case, resin band
- Aluminum leaching
3 hazards checked on this product, all on its full breakdown.
- Plastic housing
- We found no PFAS statement from the brand
- Microplastics
- Silicone band, plastic/polymer components
- We found no PFAS statement from the brand
- Silicone band skin irritation or allergic contact dermatitis
4 hazards checked on this product, all on its full breakdown.
- Stainless steel case
- We found no PFAS statement from the brand
- Nickel leaching from stainless steel
- Stainless steel case, silicone band, glass display
- We found no PFAS statement from the brand
- Silicone band degradation and microbial growth
3 hazards checked on this product, all on its full breakdown.
- Stainless steel case, sapphire crystal, elastomer band
- Elastomer band bacterial growth and odor
3 hazards checked on this product, all on its full breakdown.
- Aluminum case, stainless steel back, sapphire crystal, polymer/ on band
- Polymer band degradation
3 hazards checked on this product, all on its full breakdown.
- Stainless steel case, glass display, polymer straps, waterproof sealing compounds
- Polymer strap degradation and allergen release
4 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Waterproof case
- We found no PFAS statement from the brand
- Volatile organic compounds (VOCs) and off-gassing
3 hazards checked on this product, all on its full breakdown.
- 85Sea to Summit TPU Guide Waterproof Case
- 85Swatch Scubaqua Aurelia Aurita Skeleton Quartz Watch
- 85Swatch Scubaqua Sea Nettle Quartz Watch
- 85TomTom Hot tomtom spark music and cardio gps Top Sale TomTom Spark Music Cardio Small Watch Purple Haze Sportique
- 85TomTom Golfer 2 GPS Watch
- 85TomTom Multi-Sport Cardio GPS Watch
- 85TomTom Multi-Sport GPS Watch
- 85TomTom Runner GPS Watch
- 85Withings Smartwatch Withings Steel HR Sport
- 85Withings Pulse O2 Activity Tracker
- 85Withings Scanwatch HWA09 Hybrid Smartwatch
- 85Withings Smartwatch Withings Scanwatch Wristband Withings ScanWatch 38mm Black
- 85Xiaomi Redmi Watch 5 Lite Smartwatch - 1.96 inch Amoled, 18-Day Battery, 5atm Waterproof, Alexa, Bluetooth Calling, Black, Adul
- 85Xiaomi Smart Band 9
- 85Xiaomi Smart Band 9 Pro Smartwatch
- 85Pelican Protector MagSafe Case iPhone 17
- 85Amazfit Balance 2 XT Smartwatch
- 85Amazfit Bip 6 Smartwatch
- 85Fitbit Charge 6 Fitness Tracker
- 85Fitbit Sense Smartwatch
- 85Fitbit Versa 4 Smart Sports Watch
- 85Fitbit Google Fitbit Air Screenless Health & Fitness Tracker
- 85Mophie Juice Pack Access Hardshell Battery Case for Apple iPhone 11
- 85Mophie Juice Pack Battery Case for iPhone 15 Pro Max
- 85Mophie Juice Pack Case for Apple iPhone 17 Pro
- 85Mophie Juice Pack for iPhone 16
- 85Mophie Juice Pack for iPhone 16 Pro
- 85Pelican Voyager MagSafe Case for Apple iPhone 16e / iPhone 15 / iPhone 14 /
- 85Realme Gps Realme Watch Pro Kaufen Oraimo Watch 5R Pro AMOLED Wireless Calling IP68
- 85Realme 6 Men's Smart Watch with Voice Command
- 85Realme Techlife Watch R100 Smartwatch
- 85Realme Watch 5 Smartwatch
- 85Realme Watch 5 Titanium Smartwatch
- 85Samsung Galaxy Watch Ultra (2025) Titanium LTE 64 GB Display
- 85TomTom Runner Cardio GPS Watch
- 85TomTom Spark GPS Fitness Watch
- 85TomTom Spark Music GPS Fitness Watch
- 85Withings ScanWatch 2 Hybrid Smartwatch
- 85Withings ScanWatch Light Hybrid Smart Watch
- 85Withings ScanWatch Vitals
- 85Withings Smartwatch 0850630 Smartwatch Withings INW510 Scanwatch + Body White
- 85Xiaomi Redmi Watch 5 Active Midnight Silver - 18-Day Battery Life, 2-Inch Display, 140+ Workout Modes, 5atm Waterproof, Bluetoo
- 85Xiaomi Redmi Watch 6 Smartwatch
- 85Xiaomi Smart Band 9 Active Smartwatch
- 85Xiaomi Smartwatch Ip68 Waterproof Bluetooth Call Electrocardiogram Bp
- 85Xiaomi Watch S5 Smartwatch
- 85Pelican Shield MagSafe Case for iPhone 17 Pro Max
Which waterproof smartphone cases contain PFAS? Poor and Bad, we’d swap these
- nylon canvas with waterproof coating (unspecified)
- We found no PFAS statement from the brand
- Waterproof coating leaching (undisclosed chemistry)
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- Nylon with waterproof coating, quick-release hardware
- We found no PFAS statement from the brand
- Coating degradation and microplastic shedding
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon
- nylon canvas with waterproof coating (unspecified)
- We found no PFAS statement from the brand
- PFAS
3 hazards checked on this product, all on its full breakdown.
Find an alternative on Amazon- nylon canvas with waterproof coating (unspecified)
- We found no PFAS statement from the brand
- Waterproof coating composition (unknown chemistry)
2 hazards checked on this product, all on its full breakdown.
Find an alternative on AmazonGet the graded list, free.
The products we score each week, and the best-graded alternative in every category.
No spam. Unsubscribe anytime.