A:Answer It is a standard charger 2.5” x 3.75”. The Gram supports USB Power Delivery (PD) 3.0 on Type C port, so it can be charged when source device like portable power bank or Type-c power adapter supports USB PD. Power profile to be charged is like below: 5V @2A(10W), 9V @3A(27W), 15V @3A(45W), 20V @5A(100W). ^CP