These cheap and compact adapters do work for occasional use (travel), but after a few weeks of usage, I wish I had spent more money on better quality products :- They don't have a ground pin. Obviously you cannot (safely) use them with devices that require grounding. But what I did not anticipate it that they are very stable. The weight of a fast USB charger is enough to pull them out of the wall socket. I would also not trust these when children are around.- The internal contacts are incredibly thin. Don't even think about using these for anything that draws more than a few Amps.- When plug a device in the adapter, the pin of the devices are not properly guided. If you are not perfectly aligned this will bend the internal contacts. I have already damaged two adapters this way.
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