Newegg offers the Anker Astro E7 25,600mAh 3-Port External Battery Charger, model no. A1210011, for $79.99. Coupon code "EMCAPNV62" cuts that to $69.99. With free shipping, that's the lowest total price we could find by $10. It features an LED flashlight and the power to charge a phone up to 10 times, or a tablet twice.