I have the earlier model of the Kmashi 20,000mAh portable USB charger. It’s the one I take with me on trips lasting more than a couple of days. It can keep my iPhone fully charged for days without having to plug into an AC outlet. It’s $(removed) but if you use code GEBLIOJ7 on Amazon you can get it for $(removed)
20,000mAh portable charger for $(removed)
![](https://i0.wp.com/staging.boingboing.net/wp-content/uploads/2016/11/kmashi.jpg?fit=800%2C611&ssl=1)