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how long do you think it will take this cooler to drain my battery?

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Old 05-29-2014, 12:30 AM
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Default how long do you think it will take this cooler to drain my battery?

hey guys. i bought this thing at a yard sale a few years ago for $5.00. works awesome on long trips to alabama and back. never left it on with the car off for more than about 45 mins though. the a few friends and us are planning a trip to see a double feature at the drive in this weekend and i was thinking about taking it. (no alcohol at the concession stand for obvious reasons)


got me to thinking though. will it kill my battery in the 2-3 hours it will be running with the car off.... no amperage ratings on it, nor can i find any. and i dont have an ammeter. im running an optima deep cycle yellow top. 890CCA if i remember correctly. thanks alot guys!

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Old 05-29-2014, 01:01 AM
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Jason have you ever load tested your battery?
In reality those coolers etc generally dont pull more than 6amp per hour, however if your battery wont pass a load test...it probably would leave you needing a jumper.
Does anyone have a jumper box you could run it off separately, that would be the best safest solution.
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Old 05-29-2014, 07:48 AM
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link doesnt work but we have a cooler we used when we didnt have a camper like 30 something quart and i tried one time to leave it plugged in the jeep and it was so dead it wouldnt start in about an hour

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Old 05-29-2014, 11:49 AM
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art- i do have a jump box that i keep on me at all times. and the battery is great. ive left the key in/radio on for 20 hours before (accidentally) and came out and the car started right up. i love my optima. my jump box dont have the acc socket on it though, so ill have to either buy a socket from advance or hack my wires.

was looking for a free fix, afterall a bag of ice is about $2.00 lol
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Old 05-30-2014, 01:19 AM
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A bag of ice is cheaper than being stranded!
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Old 05-30-2014, 08:19 AM
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Crunching numbers alone says you should be fine by a wide margin, but of course, there are plenty of factors that can leave you out of luck. A valid point is brought up about the ice. If you insist on using this cooler, you can put ice in gallon ziploc baggies.
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Old 05-30-2014, 08:31 AM
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you can always add a second battery, isolated from the first most times with a continuous duty solenoid.
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Old 05-31-2014, 02:15 AM
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well, it ran on the rigged up jump box for roughly 2 hours. just enough to polish off the 12 pack i had in there between the 4 of us. then it started beeping and saying low battery. lol
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