Chargers & a phone's ability to utilize it

TDV1

Estimable
Apr 19, 2015
1
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4,510
I have a HTC One M7. I just found out that this phone will not be able to utilize the power of rapid chargers (like the one HTC has). However, I have been told that the max that I can utilize is a charger with 2.1 amps. Is this true? I don't know much about chargers/charging. Thanks in advance.