Major online marketplaces, including Amazon, eBay, and B&Q, are facing renewed scrutiny after a watchdog investigation found that nine out of 15 tested USB phone chargers posed severe risks of electrocution, fire, or explosion. According to Which?, these products—sold by third-party sellers—frequently lacked essential safety documentation and, in some cases, contained modelling clay to artificially mimic the weight of genuine components.
Why are these chargers failing safety tests?
The primary safety failures stem from poor manufacturing and the intentional use of counterfeit materials to deceive consumers. According to Which?, eight of the tested chargers posed fire and explosion hazards, while nine were identified as electrocution risks. In one instance, a charger sold as an “Apple” product on eBay contained a lump of modelling clay inside the casing to create a false sense of quality. Electrical Safety First CEO Lesley Rudd noted that criminals often use metal weights or clay to mimic the feel of genuine electronics, a practice that deliberately prioritizes profit over consumer safety.
Researchers found that one counterfeit Apple charger, sold for £11.99, produced arcing sounds—a sign of electrical discharge—after just 10 seconds of testing.
Which retailers are involved?
The investigation covered a range of platforms, including Amazon, Amazon Haul, AliExpress, B&Q Marketplace, Debenhams Marketplace, and eBay. Which? researchers reported that chargers purchased from these sites failed to meet basic UK safety standards. For example, a USB-C charger from Amazon Haul priced at £6.99 failed electrical safety tests, while a dual-port charger from Debenhams Marketplace was found to be weighted with clay. Retailers involved in the report stated they have removed the specific listings, citing customer safety as a priority.

How does this impact future product regulation?
The findings have intensified calls for the UK government to utilize powers under the Product Regulation and Metrology Act to hold online marketplaces legally accountable. Sue Davies, head of consumer protection policy at Which?, argues that marketplaces have been aware of the dangers of knock-off electronics for nearly a decade. She advocates for a clear legal duty of care, which would force platforms to ensure the safety of goods sold by third-party vendors, rather than relying on reactive removals after a safety incident has already occurred.
Comparison of marketplace safety outcomes
| Platform | Key Finding |
|---|---|
| Amazon/eBay/B&Q | Dangerous, failed safety tests, posed shock/fire risks. |
| Temu/Shein | Passed safety tests but lacked mandatory UK import markings. |
Frequently Asked Questions
Are all cheap phone chargers dangerous?
Not all, but the investigation found a high failure rate among low-cost third-party listings. Which? found that chargers from some platforms passed safety tests, though they often lacked required documentation.
What should I look for in a safe charger?
Check for the UKCA or CE mark on the product and packaging. Ensure the packaging includes the manufacturer’s details and the UK importer’s address.
What should I do if I suspect my charger is fake?
Stop using the device immediately. If you believe it is a counterfeit, report it to the retailer and Citizens Advice to protect other consumers.
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