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Subject Topic: Powering a fridge
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Personfleck2
via mobile 24/7/2020 at 2:58pm
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Look for Aldi "Ultimate Speed 4 amp smart charger"... or it might be Lidl


PersonFrancais
24/7/2020 at 3:29pm
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Compressor fridge at +4Deg C will run for 5 days from a cheap 120Ah LA battery.

To get a 120Ah LA battery from 50% capacity back to 100% takes 23 hours with one of the chargers that fleck2 describes.

To ensure you don't run your LA battery to below 50% capacity, keep an eye on the voltage, plenty of charts on google, you just need a pocket multimeter to check the voltage.

Better still, get a battery monitor, I use the Aili Capacity tester TR16, got one from China recently just £28 but will help keep my battery in tip top condition, and prevents me from running it to below 50% capacity.


PersonSona
via mobile 24/7/2020 at 3:37pm
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Brilliant thank you everyone!
Actually, if I got a lithium battery and a deccompressor fridge...... wouldn't need a solar panel.....is that correct...I know these batteries are pricey.....but it seems easier in the longer term?


PersonSona
via mobile 24/7/2020 at 3:57pm
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Is this what I need?
And I guess a charger?

https://www.batterymegastore.co.uk/product/tn-power-tn12-lithium-leisure-battery-lifepo4/


PersonSona
via mobile 24/7/2020 at 3:58pm
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Actually...there is a charger down at the bottom of that page? If any of you knowledge folks could take a gander I'd appreciate it....😊


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PersonSona
via mobile 24/7/2020 at 4:03pm
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And this? Or similar?

https://www.amazon.co.uk/dp/B07SFTTCWY/ref=cm_sw_r_cp_apa_i_hFVgFbEFXHWD5


Personbigmac
24/7/2020 at 4:42pm
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That battery is 12ah. It won't keep a fridge running for more than a day, and maybe not that long.




Post last edited on 24/07/2020 16:49:44


PersonSona
via mobile 24/7/2020 at 5:03pm
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Rightio, what ah do I need do you reckon?
Is that amps per hour ? Or am I being silly again?


PersonFrancais
24/7/2020 at 7:18pm
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To keep things sensible price wise, you are better of getting a cheap 120Ah LA battery, for around £90 that will keep a compressor fridge going for 5 days without damaging the battery, as it will be down to about 50% capacity, then a cheap Aldi charger will get it back to 100% in around 23 hours.
In fact if you add in a 100 watt solar panel and MPPT controller, so say another £120 that would keep the battery going almost indefinitely. so there's £210 add another £290 for the compressor fridge, and that your budget £500.
You can alway get a LiFePo4 100Ah battery when they come cheaper in a few years time, by then your 120Ah LA battery will be about ready for replacement in any case.



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