external battery charger for samsung S4

Do you always confused samsung S4 without power? Have you already own one battery charger?

---

› See More: external battery charger for samsung S4

I don't know what that means, but you can get an the official Samsung S4 battery and charger for $37 here: Amazon.com: Samsung Galaxy S4 Spare Battery Charger (2600mAh Battery Included): Cell Phones & Accessories

Or you can get an aftermarket one with two batteries for $27 here: Amazon.com: [NFC/Google Wallet Capable] Anker® 2 x 2600mAh Samsung Galaxy S4, GT-I9500 Li-ion Replacement Batteries with Anker® Travel Charger [18-Month Warranty]: Cell Phones & Accessories

I have one of the RAVPower 14000mAh and it works great.
Two USB ports: 1A & 2A, one for my phone and one for my tab.
Got it from Amazon for $43.