This is the second time that it has happened with the stock HTC One (M7) Phone charger. When I plug my phone into a wall outlet, it acts as if it is plugged into a computer and then proceeds to "slow charge". I do not know what the issue is, but I have replaced the charger with another HTC stock charger within the past 4-6 months. My phone is about 1 year and 1 month old.