Tech21 · Waterproof Phone Chargers & Cables
700 Series Waterproof Wireless Phone Charger
Skip until brand discloses waterproofing chemistry.
Wireless charger with waterproof treatment but no material transparency. Tech21 does not disclose coating composition or PFAS status. Insufficient data for safe assessment.
The safe swap
Casetify
CASETiFY PowerThru 2-in-1 Charging Stand
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 base with unspecified waterproof coating
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
The 700 Series uses a plastic base with an unspecified waterproof coating. Waterproofing on consumer electronics typically involves polymeric sealants or thin-film coatings, many of which historically relied on fluorinated compounds (PFAS) to achieve water repellency. Without Tech21 disclosing the specific coating chemistry, the actual hazard profile remains unknown. The plastic substrate itself poses minimal direct risk if it is standard ABS or polycarbonate, but degradation of the coating over time could expose the plastic base to moisture ingress and potential leaching.
The brand's record and disclosure
Tech21 is known primarily for protective phone cases and has built a reputation on durability, but the company has not published material safety data sheets, third-party certifications (such as OEKO-TEX or NSF), or statements on PFAS avoidance for this charger product. No major recalls or safety incidents specific to the 700 Series charger appear on public record. The lack of transparency on waterproofing chemistry is a significant gap, especially given that fluorinated coatings are common in the category and PFAS persistence in the environment is well documented.
How it compares in its category
Most waterproof wireless chargers in the mid-range market use similar plastic-plus-coating designs. Some competitors (such as OtterBox wireless charging pads) have begun disclosing non-PFAS waterproofing or submitting to third-party sustainability audits. Tech21's 700 Series offers no such assurance, placing it in the less-transparent segment of the market. If waterproofing longevity is the primary driver, this product is functionally comparable to peers, but it lags in chemical accountability.
If you buy it
Use the charger indoors or in controlled moisture environments; waterproof ratings are not a license for submersion or splash abuse, which accelerates coating wear. Inspect the seams and surface regularly for visible cracks, discoloration, or swelling, which signal coating failure. Avoid placing the charger in high-humidity bathrooms or near standing water. If the coating visibly degrades within 1-2 years, consider replacement, as a damaged seal increases the risk of internal corrosion and potential electrical hazard.
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.”
Waterproof coating leaching (unidentified chemistry)
The coating composition is not disclosed. If it contains fluorinated polymers or other reactive sealants, microscopic leaching into hands or the charging pocket is theoretically possible, particularly if the coating degrades. Risk is low during normal use but increases with physical damage.
Plastic substrate degradation under moisture
Prolonged moisture exposure, especially if the coating fails, can soften or discolor the plastic base. This does not pose direct toxicity but may accelerate micro-crack formation that compromises waterproofing integrity and electrical isolation.
Electrical safety if seal is breached
Wireless chargers generate electromagnetic fields and internal circuitry. Water ingress due to coating failure could theoretically create short-circuit or shock hazards. Risk is mitigated by modern inductive design and isolating materials, but the lack of stated safety certifications (FCC, UL) for the waterproof version makes verification difficult.
Manufacturing residues in plastic
Tech21's cases have not been flagged for formaldehyde resins or antimony migration. Standard ABS/polycarbonate molding typically leaves minimal residual monomers, but without material declarations for this charger, confirmation is not available.
Off-gassing from coating or adhesives
Waterproof coatings and adhesives can emit volatile organic compounds (VOCs) during the first weeks of use. No reports specific to Tech21's 700 Series exist, and the risk is generally low for passive electronics stored away from air intake, but ventilation during initial use is prudent.
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 Phone Chargers & Cables
Casetify
PowerThru 2-in-1 Charging Stand
Plastic/aluminum charging stand, typical electronics materials
No PFAS risk signals identified.
⚠Brand says nothing about PFAS
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Chiikawa D2 x CASETiFY PowerThru Magnetic Wireless Charger
Wireless charger, metal and plastic components
Electronics charger with no known PFAS risk signals identified.
⚠Brand says nothing about PFAS
Casetify
Miffy PowerThru 2-in-1 Charging Stand
Plastic, metal, likely silicone or TPE
Likely lower concern; no disclosed PFAS use in typical charging stands.
⚠Brand says nothing about PFAS
More waterproof phone chargers & cables 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.