This past Winter in Rhode Island, the 2009 Jeep Rubicon with V-6 engine I was lent had its battery commit suicide. A call to the owner told me to find the Li-Ion battery pack somewhere in the garage and use that to jump start the Jeep across the battery terminals. About the size of a large, thick, mobile phone, I was skeptical. The cold engine started right up. The specifications on the label read 8,000 milliamps. I have shopped battery packs in similar sizes (eBay and Amazon) to 10, 12, 16,000 milliamp ratings. They usually come with attachments to charge mobile phones, laptops, ipads et al.
