Quote:
Originally Posted by uboot
It is safe! As stated in many other threads here...
Background: Charge current regulation is done by the device, not by the charger. The charger is nothing but a power supply.
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Not entirely true. At minimum, the power supply needs to be able to deliver enough current to properly charge the device. Some USB adapters can only output 500mA, which is about how much current a computer USB port should be able to deliver, but some device, like certain iPods, need far more current than that when using a charger rather than a computer port. Most likely, if the power supply can't provide enough current, the device will simply not charge, but it's also possible that the power supply could over-heat, or, I suspect in theory, the out-of-spec current could possibly damage a device by causing some circuit to operate in an unexpected way.
There's also situations like Motorola cell phones, which are annoyingly hobbled so they will only work with specially-wired chargers.