As one of its daily deals, Tech Woot offers the Powerbag Rolling Office Case with Rechargeable 6,000mAh Battery in Black, model no. RFAP-0018P, for $39.99 plus $5 for shipping. That's tied with our mention from three weeks ago and the lowest total price we could find by $34. It features a 15" laptop compartment, battery level indication, and water-resistant AC adapter. It also includes microUSB, miniUSB, Apple 30-pin, and USB connectors. Deal ends today.