Just spotted another clearance bargain, now you can be real profesional when your car refuses to start cause the battery is flat, wheel out the starter/charger and crank it up with the supplied jump leads. These normally sell for in eccess of £100.
Yes I did buy one ;-)
Portable unit with charging output 12/24V. Charging current 20A. Cranking current 120A. 2 charging steps, polarity inversion, fast charge facility and ammeter. Includes jump leads.