Compact 5000mAh USB charger for $8
by Mark Frauenfelder from on (#PWSD)
This smallish portable USB charger from Kmashi is rated at 5000mAh and is on sale now for $8.38 when you use promo code: PIRVWBWG on Amazon. I have a few different Kmashi chargers, and have used them for over a year with good results.