Newegg offers the 2nd-generation Anker Astro E4 13,000mAh External Dual USB Battery Pack in White, model no. A1207H21, or Black, model no. A1207H1D, for $29.99. Coupon code "MRHAG1519" cuts it to $14.99. With free shipping, that's $5 under our mention from last month and the lowest total price we've seen. (It's a current best by $25.) It features an LED flashlight, fail-safe protection, and device detection for up to 3-amp charging. Deal ends March 19.