Here is the Anker 26800mah portable charger. This thing will charge an iPhone 8 Plus from 0 - 100 about 20 times before it dies. Really amazing portable charger. As you can expect it's a little heavy and about the size of two wallets next to each other, but really worth having when you need some portable charging going on. I take this thing with me on almost every trip I take. Highly recommend this charger.
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From @evoman1