Charging an 18650 @ 2amps will warm your battery up and likely take some cycles off your battery.
Use a 1amp charger or if you can find one a .5amp charger.
^^^ That. The device is in control of the charging - or it better be. Under powering it with a low current power supply causes problems. But it will only draw as much current as the charging circuit is designed to draw. You can't "make" it draw 2A by using a 2A power supply.
Charging an 18650 @ 2amps will warm your battery up and likely take some cycles off your battery.
Use a 1amp charger or if you can find one a .5amp charger.
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