Best.seller.cn through eBay offers the Aukey 12,000mAh Portable Jump Starter and Dual USB Power Bank, model no. PB-C2, for $29.99 with Free Shipping for a limited time.

This Aukey portable jump starter delivers up to 20 jump starts per charge at 400 peek amps and features two jumper clamps, two USB ports, and a LED flashlight.