Starting your car requires a burst of 100 to 200 amps. by macka17 » Tue Feb 01, 2011 3:45 pm, Post Battery capacity is measured in Ah (amps x hours). A fridge drawing 30 amps on a 50% duty cycle will use 120 Ah in an 8 hour period. (30 x .5 x 8). by chrisandliso » Mon Jan 31, 2011 6:29 pm, Post The generator has to be able to deliver 150 watts or more to run the Powertop, at 230 volts Ac at 50 hertz. If you are after a simple plug and play solution to power your fridge – the Baintech PowerTop will keep your essentials running, without the fuss and cost of installing a dual battery set up. Your cranking battery is designed to deliver it for a short period of time. When going on a camping trip, people often wonder how much power their portable fridge will be using. And our battery is 120AH. January 20, 2015 | Comments You can run 8 B&S (approx 10mm2 ) and split the cores at the plug to not only use pins 9&10 but the two other spare pins as well . 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The PowerTop has a built-in solar regulator that will prevent the PowerTop 135ah Battery from overcharging. The advantage of using a good quality deep cycle Lithium Battery is your depth of discharge can go down to 75%. Our fridge uses about 5amps per hour. Under this circumstance, the RV refrigerator could run for about 4 to 5 hours using a single 12 Volts battery that can supply 100 amp-hours. Hi Ross, if you give the team a call on 1300 224 683 they will be able to trouble shoot any issues with you. With it set to low my fridge is working fine and the battery is still sat at 12.4v, 12.3 when the compressor is running. Of the cuff, untill the battery volts gets to 11.5 volts.. then the auto voltage cut out comes in to play, comes back on near 12.3 ? If your fridge is drawing 1amp then the PowerTop’s 135AH battery will be able to run for 67 hours. There is no freezer compartment though like the 80lt. eg 500Ah battery will give you (500*.8)/50 hours total run time. Our fridge uses about 5amps per hour. Let’s assume this is tested in a laboratory where the outer temperature is 90°F or 32°C. Hi, I'm going to buy a Waeco 80 litre (Caravaners Forum-80AC VERB) portable fridge and plan to run it off battery when we are places with no power. The biggest thing to remember is your PowerTop battery, like any other battery – should only be used to 50% depth of discharge (D.O.D). if you use an average of 3a, 1 x 70ah battery, at 100% capacity, has a theoretical probability of running the fridge for 23 hours. I once thought that I had made a mistake....But I was wrong, NP Pajero towing 2010 Goldstream Mini Caravan "Liddle Pup", ↳   Announcements & Admin Contact Details, ↳   Old Announcements and User Guide topics. and also internally. by Peter_n_Margaret » Mon Jan 31, 2011 5:38 pm, Post by Smokeydk » Tue Feb 01, 2011 2:12 pm, Post So if a refrigerator consumes on average 1 amp per hour, and is the only appliance running from a 100 amp-hour battery, you should be able to have the refrigerator run for around 80 hours before recharging becomes necessary. by 2EZY » Tue Feb 01, 2011 4:23 pm, Post Batteries are a form of DC or direct current. Would one of these 120W folding panels off ebay do the trick. As a retired technical bod with 43+ years of service with PMG, Telecom, Telstra, can I throw in my two bob's worth regarding discharging lead acid batteries. i have an 80 litre waeco in my camper trailer and 120amp deep cycle battery & 2.5amp solar panel . As you said the Waeco will live in the back of the Paj, when full not something you can lug around easily.So, secondly, get a space blanket from a camping store and a few spring loaded clamps from the likes of Bunnings. A fridge drawing only 55 DC amps can be run for about 60 minutes of continuous duty off a 105 ampere-hour battery. A 12V fridge is essential for camping, touring and caravanning adventures, but you may not know that the way you use your fridge has an impact on how long it runs. By adding a solar source to charge the PowerTop you can charge on the move – by either by fixed solar panels on your roof, via alternator charging or while set up at camp by using the Baintuff 180w solar blanket. if it was left in freeze mode and drew the 3.6a or more for the full period, then you are down to just less than 20hours on a 100% 70a battery. It is essential that the correct size cable is used minimum of 6mm or 10mm if the cable run from battery to fridge is 6mtrs or more, to reduce voltage drop to a minimum. Basic calculation method 135AH battery / 2 = 67.5AH of available capacity (67.5AH / 1amp draw = 67.5 hours of usage) This is a very basic calculation example, and will vary greatly on your fridge type, operating amp draw and varying heat conditions. by Peter_n_Margaret » Wed Feb 02, 2011 9:02 pm, Return to “TECHNICAL Forum - Caravans, Motorhomes, Vehicles and Towing.”, Powered by phpBB® Forum Software © phpBB Limited. I have a Waeco 60 litre that came with a Waeco Raps 36 battery pack, 36ah deep cycle. Assuming a small 12 volt fridge of the type found in caravans, about 50 watts, and an average car battery, with a capacity of 40 amp hours. This is a portable heavy duty 12 V battery that is the ideal choice for running a portable compressor fridge or freezer for long periods of time. • Camps Australia Wide, Australia’s leading RV camping guide. Your email address will not be published. A slightly different example is a 60 watt fridge running on a 12 volt power source uses 60 /12 = 5 amps, but only while the motor runs. ( using two pins for + and two pins for - ) But the Anderson will give least trouble long term IMO . Or 400/50=8 hours run time dropping 80% of the battery charge. Be aware that the Waeco has a setting that allows it to take the battery down to either 10.1, 11.4 or 11.8v. TECHNICAL Forum - Caravans, Motorhomes, Vehicles and Towing. More importantly, it lets you run your appliances off of stand… Similarly, how long will a waeco fridge run on a battery? That 12 volt port must be able to supply around 20 amps or more. If you "thrash" your battery, a couple of days, or a bit more. if it was left in freeze mode and drew the 3.6a or more for the full period, then you are down to … That’s alternating current, not air conditioning. Home electric systems and most appliances run off of AC. Required fields are marked *. The current consumption of the fridge is calculated from I = w/v = 50/ 12 = 4 amps A 40 amp hour battery, can supply a current of 4 amps for 10 hours. Also ran and used regularly for 3 - 4 days on a single 110ah battery with a 3 to 6 mile trip either end of the day and an 80 mile trip either end of the week and off at weekends without having to do any other battery charging. Crack the lid slowly. 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