Kmashi 5,000mAh External Battery, $6 with code OIJ89P7C | Kmashi 10,000mAh External Battery, $8 with code 5EX29OBF

Kmashi’s insanely affordable USB battery packs are back, and they’re cheaper than ever. $8 for 10,000mAh is basically unheard of, and $6 for 5,000mAh is also great if you need a pocket-friendly pack.