Is that a guess or is it based on knowledge/experience?
Switched mode power supplies are pretty sensitive, and I don't know enough about them or the charging circuitry in the reader to know if the reader would try and pull more current than the PSU could handle, or what the consequences would be if it did.
I do know that a charger that was capable of supplying more than 2A would be safe because the reader would only draw what it needed, but I'm not sure what happens if the charger is underpowered.
Anyone able to shed any light on this?
Or has anyone used an aftermarket adapter that supplies less than 2A without incident?
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