I rate this iPhone portable charger three out of five stars, and here is why.
I like that the charger is compact with a built-in lightning cable, so I don't have to carry extra cables. It also has an LCD screen to see the available charge. This little device worked great, charging my iPhone. However, the built-in cable had a few issues.
It doesn't like staying in the slot compartment, and after a few times using it began tearing at the seem.
It continues to work, but the durability is questionable. Therefore I rate this product three out of five stars.
Find it on Amazon here: https://www.amazon.com/gp/product/B0BHT5LF9Y