Newegg offers the Fremo P100 10,400mAh USB Power Bank, model no. P100, bundled with a Dual-Port USB Car Charger for $24.99. Coupon code "EMCASNK57" cuts it to $14.99. With free shipping, that's $4 below our March mention and the lowest total price we've seen. (It's also $5 under the best price we could find for the power bank alone.) It's compatible with most 5-volt input USB-charged devices. Deal ends March 30.