PortaPowUSB-C Data Blocker (Twin Pack)

Does exactly what it says - it allows electricity to pass through but not data. You can use this to safely recharge a phone at work or at a public terminal and there's no chance of getting spied on or picking up malicious software. The build quality is similar to that of the USB cable that came with my phone and it feels perfectly sturdy.

If you use a public charging point at any time these are an essential. Also useful with any charging from a PC or laptop, and especially if it is not your own. Easy to use and easy to carry.

These are great to block data in any sort of public environment when I just need power. I have found that on a few devices like docks they stop the dock supplying power and only work if I plugin a hub first.Nicely coloured to identify them as a data blocker too.

Out of the packet both of these do not work. Complete waste of time, look at the number of similar reviews. Great idea but these guys cannot make it work.

Per the product description, and the need for additional connections to negotiate high wattage power delivery, I find these max out at ~1.5A 5V (so <10W). They didn't work with any of my USB-C chargers but worked fine with A to C cables.

Have two USB-A data blockers from PortaPow, so was not expecting any issues. Doesn't work. Returned for refund.