Quote:
Originally Posted by DNSB
I would avoid no-name chargers. I've checked the output voltages on several that were either too low ~4V or too high >6V.
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That is sound advice, many of these little knock-off chargers are so poorly designed, cheaply put together or both that they are a significant shock hazard to the user and the device. They can short out sending line voltage into you or your device, melt down or ignite and of course basic safety features such as fuses and proper isolation are also skipped for the sake of making the device cheap as possible. More often the output voltage as you have pointed out is out of spec or crawling with electrical noise.