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difference is 2.7 amperes in numbers will be 12 volts 3 amps and the other will be 12 volts .3 amps

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14y ago
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11y ago

The difference is in the output voltage. One is 9 volts and the other is 12 volts. The capacity capacity of running a 300 mA device is the same.

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Q: What is the difference between a 9v 300mA Adapter and a 12v 300mA Adapter?
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