ZMI POWERPACK 20000: A SPEEDY CHARGER FOR YOUR USB-C MACBOOK OR MACBOOK PRO
by GLENN FLEISHMAN
Mar 15, 2018
2 minutes
efore the USB Power Delivery 2.0 spec became reality, battery packs maxed out at a charge of about 15 watts (5 volts at 3 amps). PD 2.0 increased the max to 100W, but most of the batteries implementing PD 2.0 strike a balance of performance, heat, cost, and compactness by outputting about 30W. Some recharge at the same rate while others are much slower.
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