Basically it is the Swiss Army knife of the battery world providing you with a torch, flashing emergency lights, seat belt cutter, hammer, twin USB power outlets, 12v, 15v, 19v laptop outlets and, most intriguingly, a 12v 600A car emergency start. It uses a 16,800maH Li-Po battery (smaller capacities are available) that will give you 20 flat battery starts or act as a power bank for your Smartphone if you are without power. Despite the cost it is beautifully made, comes complete with mains/car charger, all the gadget connectors you will ever need and housed in a very nice zip up storage case. It is self perpetuating because once you get the car started you can re-charge the power bank from the cigar lighter socket.
Emergency start is easy - clip leads onto battery, plug into the Floureon, start car, remove within 30 seconds. Blue LED's show you the level of charge remaining. It will deal with any engine up to a high compression diesel V8 so even a S3 V12 will not be a problem.
It is so small (6.8" x 3.2" x 1.4") you could carry it in a back pack or brief case as a back up charger for your phone/laptop. Only a simple on/off slide switch and a function select button to operate.
Floureon are a major US company: http://www.floureon.com/ There are several different versions out there differentiated by battery capacity but the 'Ghero F01' is the latest. After doing winter service in the RRS it will go in the boot of the E-Type - an essential touring spare I think!
I bought mine from eBay: http://tinyurl.com/nv4huyc with a UK charger, EU chargers are also being offered so check the listing.
