Running two Fridges

ps...the cranker IS only for the criuser....the other for the fridges and lights and inverter and etc etc etc

Phillip,

You must have an amazing Deep Cycle Battery!!! My rough calculations:

1 x 60l fridge (as fridge) minimum 25AH/Day in moderate climate
1 x 50l fridge (as freezer) minimum 40AH/Day in moderate climate

Above totals a minimum of 65AH/Day without running anything else and that is a very conservative estimate. Two days would see 130AH used. Dunno about the lights, inverter and etc etc etc......

I have the biggest AGM I can fit in the 105 series (had to modify the tray) and it is 120AH. I do run it down to 80% occasionally which is about 85AH or so. and I can get a max of 4 days with the Autofridge running eutectic mode in moderate climate.

Can you tell us how you do it? Do you run them till the battery is dead flat or have you a low voltage cutout? I would love to get more power out of my battery setup without damaging the batteries.

Cheers,

Mark

i run two 39 litre engle fridges plus other accessorries i get 2 days out of my battery. battery has 90 amp written on it. it is a super cheap lead acid deep cycle battery we've had it for 3 years still working. we travel a good part of the year in northern part of oz. working and enjoying so used constantly. i'm not it to amp hour usage not that interested.
when it breaks down i'll get another. why are u concerned about amp useage the battery will tell when it is flat or the fridge stops working.so far hasn't happened.
have a nice day
al

Al,

Not really that fussed, but over the years I have spent more than my fair share on replacing batteries and over the past few years have been looking into ways of not stuffing them, as most battery failures are through operator error and poor maintenance as were all of mine.

Clearly with your setup, your battery will be close to flattened at the end of two days and imagine won't last that long (though 3 years with this treatment is great...so keep doing it and buying those Supercheap batteries as they must be good!)

I also agree, when it breaks down I'll get another too, but preferably when not a week away from civilisation with a months meat in the fridge!!!

Cheers,

Mark

As I said being doing it now for a while....I listen to you guys and it amazes me how you calculate this and that etc etc....I just do it and it works for me.... soooooooooooo....if it ain't broke why fix it...it works for me. The second battery has the normal posts and two studs as well so that you can attach a few leads...it cost a few bob too....I used to have two big crankers but this set up is a lot better.

Yep my vote is with crackles. The most efficient fridge/freezer set up as one fridge and the other freezer will use around 65+ amphrs without sucking it too low.

Mark