Picked up the Targus in-car laptop charger from Clive Anthony. You can get it without the USB charger for $55 which is what I did. Now to see if it works.......
It is actually 19.5V and not 19V as on the flier.
Plugged it into my 5 year old Halfords 20AHr jumpstart pack and it is charging away merrily. No sign of any heating on the charger. Its a very small device about the size of a car mobile phone charger.
I should get 2-3 hours of use from the powerpack plus with a fully charged battery to start with hopefully I can run for 6-8 hours
