How long would a 12v coolbox take to drain a battery?

[okie592]

i have a 12v coolbox with inbuilt fan that i want to leave in the car running via the 12v socket when the cars off. It has my lunch for work in it, so would be in a turned off car for about 4 hours. i would turn it off after ive taken my lunch out.

the car is a 2011 golf tdi bluemotion and i assume the battery is good.

the cool box is 12v rated as 50w when plugged into a 12v dc source. not sure what sort of amps its pulling though?

car is left for a max of 8 hours from parking up in the morning to going home.

[okie592]

Superhoop said:

Can you not get one with a cigar lighter adapter and a mains lead and then when you get to work just plug it in there?

im a mobile engineer so dont have a office to keep it plugged in at, thats the whole reason i have the coolbox, it tends to go a bit sweaty in the heat.

will try it at a weeknend and see

[okie592]

cuprabob said:

As above, on the later.VWs the.12V socket in the car and the.boor.only work with the ignition on.

linked out to provide a permanent live