Originally Posted by thegasguru

4. I also carry at least one of these Kopi cables (in my photo, it's the cable with the yellow tips). These cables are scientifically designed to provide maximum energy throughput for charging - and you can measure the fact that that's true. You can read about it here. If you have a high capacity battery device and you need to charge at maximum speed, you cannot get more electricity throughput than by combining the Anker 40W recharger with a Kopi cable.