On 20/04/15 08:06, charles wrote:
In article , harryagain
wrote:

BTW, power available from a car battery is neglable. Don't expect too
much from cig lighter socket.

Keep the engine running


With respect, not necessary. When we did caravanning, we'd happily run
several tube lights off the car for long autumn evenings.

Now you can get 290lm for 4W LED caravan lights, so 3 of those would run
all day and all night without risking a car battery.

Though given the price of some of those fittings, it might be cheaper to
just get some small BC open battens and stick some LED replacement car
bulbs in them.