It is an excellent battery designed by Jackery. Compared to other external batteries on the market, this one has a Lightning cable to charge its iPhone and another micro USB cable to charge Android or Windows Phone smartphones.
If this does not suit you, the battery has a USB port to charge another device. Its design is very classy and discreet.
This battery contains Super Li-ion cells of class A polymer, the same type of battery that Tesla uses for its cars. This explains why it is so small for the 6000mAh it contains.
Its compact size makes it easy to store in your pocket. The charge is a bit long, like all external batteries, but if you charge it overnight it will not cause you any inconvenience.
Overall the Jackery Bolt is powerful and we recommend it to everyone!
Available on Amazon.