FlyerTalk Forums - View Single Post - Micro-USB chargers: interchangeable?
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Old Jul 17, 2014 | 10:57 pm
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Loren Pechtel
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A charger with a higher power rating than the device should be ok. A charger with a lower rating is another matter--it should not be done.

The only time an over-powered charger would matter is if it doesn't have good voltage regulation and responds to a lower draw by producing more voltage.
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