Published: 31 March 2016
The $56 RAVPower 20100mAh External Battery Pack ( ravpower.com ) just charged my MacBook up to 90% before it runs out of power. But should you have a need for speed and diversity of interfaces, and you’ve got the proper cellular telephone gear to really go with it, you might really favor the RAVPower to other versions. It could be recharged through two interfaces (Micro-USB and USB C), and also the USB C interface may also charge other devices. And it has two Type A interfaces with distinct features.