Reply With QuoteSounds a little low, as that equates to around 3 hours input. What was the cost of the setup?
Went solar
Finally put some solar panels on the disco to run the fridge. Seems to work pretty good and overall pretty dam happy.
Set up - 2 80watt bp panels
- 180ah fullriver AGM battery
- PL20 controller
Sunny day seems to put in around 38ah's and the fridge draws 11ah (through work hours) and overcast day seems to equal out.
Run the fridge at zero for 24 hours/day and the battery seems to hold around 12.9 volts.
TopicToaster
Sounds a little low, as that equates to around 3 hours input. What was the cost of the setup?
Numpty
Thomas - 1955 Series 1 107" Truck Cab
Leon - 1957 Series 1 88" Soft Top
Lewis - 1963 Series 11A ex Mil Gunbuggy
Teddy5 - 2001 Ex Telstra Big Cab Td5
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REMLR No 143
Master
SupporterLove to see a pic or 2 of where/how you installed such a big battery !Originally Posted by garciaj
Cheers
Simon
2003 D2a TD5, ACE, SLS, Vienna Green.
LordRover
SupporterEven the worst ebay compressor fridges only pull about 5-6 amps if running constantly - what fridge do you have that is pulling nearly double that?
Garry
REMLR 243
2007 Range Rover Sport TDV6
1977 FC 101
1976 Jaguar XJ12C
1973 Haflinger AP700
1971 Jaguar V12 E-Type Series 3 Roadster
1957 Series 1 88"
1957 Series 1 88" Station Wagon
ChatterBox
Yes...I think we have the common confusion between amps and ampere hours here.
Amps is how much current a device draws, ( like the flow rate of water through a pipe ) whereas ampere hours is a measure of how much capacity a battery has. ( like how much water is in the tank )
Say the fridge draws about 2.5 amps when the compressor is running.
To calculate how much of the battery capacity it uses you need to work out the ampere hours.
So say the compressor runs 80 times over a day for 3 minutes each time. That is 240 minutes running time or 4 hours.
Multiply that by the amps drawn (2.5) and you have 10 ah ( or ampereXhours ) per day.
To measure this properly you need an amp hour meter. This has a memory that logs amps drawn and for how long.
Sorry for the confusion but very new to solar and dont do very little with 12volt. But the total useage for the 40 litre engel fridge was a total of 11 ahs (running @2.9amps) for the 24 hours dont know if this helps? I'm just reading what the controller says. As for the fitment I basically fitted the battery behind the rear seat but had the modifly the draw system to suit which is this weekends job. The total cost was $1900 less fridge.
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