BuyDig.com has the Tenergy 300Wh LiFePO4 Portable Power Station + 11W Desk Lamp for $159 with free shipping.

• Battery: Lithium-Iron Phosphate(LiFePO4), LCD
• Capacity: 300Wh (12.8V, 23.4Ah)
• Operation Temperature: 14F to 104F
• Certification: FCC, CEC, PSE, RoHS