12v Power Supply?

[GreigR]

Just a quick question, I have borrowed one of these 12 volt coolboxes for a camping trip next weekend. How long would it take for the car battery to go flat while using it?

Thanks

[V8mate]

Leave the car engine running?

[GreigR]

V8mate said:

Leave the car engine running?

Hi, should have mentioned trip is Sat-Monday. Probably best not to leave the car running.

[pugwash4x4]

really depends on the cooler

i have an Engel compressor fridge that holds down to a temperature. Vehicle is ok for 5 days with the fridge on but the engine off.

normally i would guess that you would be ok for 24-36 hours for peltier coolers.

[john_p]

Does it have a current marking or wattage on the side of the fridge?

[Ganglandboss]

You can work it out by looking at the current rating of the cooler and the Ampere Hour (Ah) rating of the battery. What are the ratings?

ETA: Assuming your battery is in good nick.

Edited by Ganglandboss on Sunday 17th August 20:24

[AndrewTait]

I flattened the car battery leaving one plugged in overnight, after a 4 hour motorway seed journey.

[Alfa_75_Steve]

pugwash4x4 said:

really depends on the cooler

i have an Engel compressor fridge that holds down to a temperature. Vehicle is ok for 5 days with the fridge on but the engine off.

normally i would guess that you would be ok for 24-36 hours for peltier coolers.

Not even close - overnight is enough to flatten the rather large battery in my Passat.

I know, as I've done it several times and found it a complete PITA to fire up a modern diesel from a booster pack, to the extent that the AA have been called out twice to get me moving.

[Fishtigua]

One of them £12.99 Solar panels will keep it active during the day.

[odyssey2200]

How many Amps does it draw?

How many Amp/Hours is your battery?

[spikeyhead]

If you're going to do it then take a spare battery and use that to run the cooler. It'll be flat in teh morning though.

Alternatively take a coolbox, freeze some stuff at home so that the box is full and tape the lid on. Should keep things fresh for longer than a minifridge and a soon flattened battery.

[Chainguy]

Fishtigua said:

One of them £12.99 Solar panels will keep it active during the day.

You might want to put a beside that incase someone takes you seriously.

I run one from two Optima Red Top batteries wired in Series. It lasts a good 14 hours before needing them charged from the vehicle.

[odyssey2200]

Chainguy said:

Fishtigua said:

One of them £12.99 Solar panels will keep it active during the day.

You might want to put a beside that incase someone takes you seriously.

I run one from two Optima Red Top batteries wired in Series. It lasts a good 14 hours before needing them charged from the vehicle.

In series?

24Volts?

[Chainguy]

odyssey2200 said:

Chainguy said:

Fishtigua said:

One of them £12.99 Solar panels will keep it active during the day.

You might want to put a beside that incase someone takes you seriously.

I run one from two Optima Red Top batteries wired in Series. It lasts a good 14 hours before needing them charged from the vehicle.

In series?

24Volts?

Your right, I'm being a fud; long day. In parallel, pos to pos.

If I can work out how to post pics, I'll put a picture up.

[odyssey2200]

Chainguy said:

odyssey2200 said:

Chainguy said:

Fishtigua said:

One of them £12.99 Solar panels will keep it active during the day.

You might want to put a beside that incase someone takes you seriously.

I run one from two Optima Red Top batteries wired in Series. It lasts a good 14 hours before needing them charged from the vehicle.

In series?

24Volts?

Your right, I'm being a fud; long day. In parallel, pos to pos.

If I can work out how to post pics, I'll put a picture up.

You could have blagged it and told me they were 6Volt bateries

[wizzbilly]

lesuire battry would be the answer 120amps but to be honest for the time you will use it bit of a waste imo

if you tell me the watts and ampage of the coolbox will work it out for you also depends if goes in to fag lighter they waste a lot of power that route and also the lengh of the cable

funny stuff 12v but one you figured basics simple realy

[Chainguy]

odyssey2200 said:

Chainguy said:

odyssey2200 said:

Chainguy said:

Fishtigua said:

One of them £12.99 Solar panels will keep it active during the day.

You might want to put a beside that incase someone takes you seriously.

I run one from two Optima Red Top batteries wired in Series. It lasts a good 14 hours before needing them charged from the vehicle.

In series?

24Volts?

Your right, I'm being a fud; long day. In parallel, pos to pos.

If I can work out how to post pics, I'll put a picture up.

You could have blagged it and told me they were 6Volt bateries

Trust me, after the day I've had, I'm not that quick in the head right now




Anyways, there is a shot of it. Hope you like the custard as well!

[jeff m]

I have a "cool box" it takes 7amps, I found out the hard way

To run it you will need a "proper" power supply, not one of these little black things that plug in the wall. Mine was $75 from Radio Shack (Tandy Corp)

[Private Pile]

I got a "thing" from maplins which plugs into my cigarette lighter, and my cool box plugs into the thing. It cuts power to the cool box when it senses the battery getting low.Think it works ok, but i've never used it for any length of time.

May be wise to park on a hill.

Pile

[Fetchez la vache]

Chainguy said:

Anyways, there is a shot of it. Hope you like the custard as well!

Seems a whole lot of bother just for some cool custard