These can vary from powering a blender or TV for an afternoon of tailgating or keeping food refrigerated during a month-long camping odyssey. The 12 volt deep cycle RV battery is more common than 6 volt RV batteries. Well, it depends on lots of factors and battery may not be the ideal way to power refrigerator or any other bigger appliances. I know this is frustrating, but this is why you’re reading this now so you don’t run into these issues mid install of your new fridge. If you were to swap the batteries over, you would probably find that they would still work. For example, if your pump is drawing 120 mA and you want it to run for 24 hours. So, get your priorities right and put on the devices on DC power accordingly. Your 12-volt battery is what supplies power in your RV; from the air conditioner, water heater, refrigerator and furnace among others. In short, it turns battery power into useable household-type power. Solar panels have also become popular with increasing efficiency and the cost not so very high. It would be wise to only run it for 5-hourly cycles of 20-minutes each to still have a prayer at starting your car. Normal deep cycle batteries have a cycle life of about 1500 times, when you only use 30% of their capacity. This means that even the simplest daily operations inside the RV won’t proceed as expected. Batteries are a form of DC or direct current. Home electric systems and most appliances run off of AC. Residential refrigerators too have made into RV’s and are becoming good for RV usage. Check out our tips and support section. While the batteries provide for power in condition that have no other sources, it is necessary that you take sufficient care of them. Deep-cycle batteries are a type of lead-acid battery, and is similar to the one you can find in boats and golf carts. Isn’t it? I have a 24vdc input 5000watt/20000watt psw inverter. Below, I will cover the 4 main considerations to arrive at a conclusion to this question for any size TV and any size deep-cycle battery . To check how much is the consumption, one activity you can do is to put off all the devices that run on battery and keep only fridge ON. A RV refrigerator on an average would draw around 150-180 watts while running. To make a battery compatible with an AC device, you need to convert one form of power to another, which is precisely what your inverter does. **Guidelines may be exceeded or not reached. A starter battery is designed to use a lot of power for a short period of time (starting a car). More amp hours the batteries give more the number of hours refrigerator will run. While you are camping deep inside without any hookup, you need to take help from these other sources to keep the appliances running. Look for Group 24, 27, or 31 deep cycle batteries. Your refrigerator will run for 8 – 10 hours with the batteries on. A very small user of power is a 1.2 watt LED light running on a 12 volt power source will use 1.2W / 12V = 0.1 amps. To be able to supply 500 Watt equipment from 12 Volt deep cycle battery, you will need a battery bank with total capacity of 833.40AH (or 8 x … Even with automatic chargers, that turn off on themselves there is a slight chance of overcharging. If you compare this with other appliances then air conditioner is other appliances that consumes similar or more watts. Typically, refrigerators operate about 1/3 of the time (1/3 "duty cycle"), or 8 hours a day. Lets assume my motor is the Endura 30 mentioned above, and I troll at speed 2, which is 10 amps draw. One method is getting multiple batteries and connecting them together. If you are boondocking, one can also use solar panels to charge the battery during day times. We frequently come across questions from consumers who want to purchase a battery to power their accessories, but don't know how much run time they will get in their application. Let’s assume this is tested in a laboratory where the outer temperature is 90°F or 32°C. A smaller boondocking fridge consuming less than 70 watts can last longer than 30 hours. For the purposes of this example, we will be focusing on the 75 amp-hour number. Click to see full answer Well, there are multiple things that can be done, here is a post that i had published on keeping refrigerator cool while traveling. And under these conditions a RV refrigerator alone can run for around 4-5 hours using the 12 V battery supplying around 100 amp hours. Owing to the high demand of power, you need to get yourself the deep cycle batteries as they are meant to store large amounts of power. Our YELLOWTOP batteries are the best fit for the job. Here’s what to know and what to do… There’s no need for a “Super Max Turbocharged Fuel Injected 500-Horsepower Big Block” generator to get the job done! That makes a quality battery maintenance device an excellent investment for any vehicle or application that doesn't see regular use or may deeply-discharge batteries. A RV refrigerator or a residential refrigerator for Rv consuming around 150 watts while it is running would be drawing around 12 amps hour from a single 12 V battery. Having most of your appliances on DC power in parallel will lead to draining of the battery. Whereas a deep cycle battery is designed to deliver low amounts of power continuously for a longer period. At 8.3 amps, we can run … 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. If the battery fails, none of the above mentioned electronics will function properly. An inverter is an electrical device that converts 12-volt power into 120-volt power. If you have the luxury of charging batteries once in a day, then it shouldn’t be a problem for you. You need to calculate the usage of all your appliances and then configure the batteries. Lets understand series and parallel connection in battery. To be able to supply 500 Watt equipment from 12 Volt deep cycle battery, you will need a battery bank with total capacity of 833.40AH (or 8 … Pack the refrigerator properly. This time is less for a long road trip. It takes a whole lot more than a refrigerator does. Average run cycle is 10 hours. What Can we Learn from This? Size of Generator To Run A Chest Freezer or Refrigerator. But, for boondocking you would need fridges that consume less. Dometic CoolPower RAPS44 - 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. Batteries are a form of DC or direct current. Will deeply-discharging a battery in an application like this ruin the battery? It isn’t good to run a battery all the way down to zero during each charge cycle. 5 amps by 15% = 0.75ah/h. This consumer managed to find out that his refrigerator consumes anywhere from 290mA (.29 Amp-hours) to 610mA (.69 Amp-hours), depending on the outside air temperature and other similar factors. This means, if you have a 100 amp-hour deep cycle battery, you can assume 50 amp-hours of usable power. Why Pairing An ArkPak With Your ARB Fridge/Freezer Is A Good Idea That’s alternating current, not air conditioning. It makes sense to have such a smaller fridge if you are more into boondocking. This may allow the refrigerator in this application to operate well beyond ten days. Also, if you use the refrigerator more often then the drawn amps will be more. Amps drawn are basically the per hour wise and with a normal RV battery of around 100 amps you can easily count on the hours. But that too will not last long. They’re two different batteries designed to do different things. The largest batteries we manufacture are our Group 31 batteries (pictured), which are 75 amp-hour batteries with a reserve capacity of 155 minutes. It keeps the food cool and fresh. So the battery will drain out quickly. then run an inverter off the deep cycle to power fridge and a few misc. It isn’t good to run a battery all the way down to zero during each charge cycle. And, you will need to use generator more often and even the battery would drain faster. If your fridge is drawing 1amp then the PowerTop’s 135AH battery will be able to run for 67 hours. So, keeping a closer look and charging them once in while during winter is recommended. If there are other accessories connected to the same battery, the runtime may decrease significantly, depending on the demand of those other accessories. To make a battery compatible with an AC device, you need to convert one form of power to another, which is precisely what your inverter does. That’s alternating current, not air conditioning. So in theory the battery when full should sustain the fridge 102/2=51 then 50/2.5=20 hours ? Now that we have some numbers about the battery and the motor we can start putting it all together. Battery Cycle life considerations. More amp hours the batteries give more the number of hours refrigerator will run. 4 modules in series and a Victron Orion DC-DC that takes 18-35V input to convert to 12V which in turn will run my Waeco portable fridge. While boondocking you will mostly be using the lights, refrigerator and other appliances like microwave or water pump occasionally. C (amp hours) = 0.12 Amps * 24 hours = 2.88 amp hours (keep going, not done calculating yet) Step 2. For example, if you connect two 6 Volt batteries in series then that will give you 12 V but the amps wont increase. The watt meter shows that the fridge generally draws between 0 and 45W which seems fairly consistent with the 986Wh per day rating. Use the battery only when its absolutely needed and switch to propane or shore power as-and -when you get the chance. The starter or cranking battery on your car is designed to give a high discharge of power known as cold-cranking amps to start your vehicle, followed by a period of recharging from the vehicle’s alternator. Among other appliances a TV would take less than 100 watts. So in order to run the fridge off a 12V AGM battery bank, I’m guessing I would need a minimum 1000W inverter to cope with this surge. A refrigerator too can be powered using a 12 V dc battery. Defrosting again will take more watts. No matter whether you have a travel trailer or a class c RV make sure the batteries are given enough care and proper charging. The batteries will need to deliver 20 Amps to run the refrigerator (240 Watts/12 Volts = 20 Amps). 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