By multiplying 2 Amps x 120 Volts, you find out the refrigerator uses 240 Watts. Maybe get the biggest you can and supplement it with one of those folding solar panels from the super centre. And it also includes an inverter that converts your 12v into 250v. When it comes to driving in the rain,... Hi, I’m Jimmy Mitchell and I love exploring the off beaten tracks with my wife and two boys. How long will a deep cycle battery run a fridge? And some of the best ADM or Lead Acid batteries can be run down to 75% of their maximum charge without damage. How Long Will a 12V Deep Cycle Battery Last With an Inverter. I expected a lot more, maybe at least 3 days seeing that the fridge was never opened. We recommend the AGM style (Absorbed Glass Mat) as the best for any Recreational Vehicle, but you can research this more if you want. Most inverters are about 90% efficient. eval(ez_write_tag([[300,250],'offroadaussie_com-large-mobile-banner-1','ezslot_11',132,'0','0']));Pretty much all cars have a “starter” or “cranking” battery. If you run a fridge, lights and a few other bits of gear and mostly use it on weekends – get the Adventure Kings AGM Deep Cycle Battery 115AH. A typical deep-cycle RV battery will be rated around 80 amp-hours, which in theory would supply one amp for 80 hours. 1 decade ago. This is not only expensive but if you’re in the middle of the bush and can’t start your car it can be inconvenient at best and life-threatening at worst. If you have the contents already cold and the battery is a fully charged 130 ah then you should expect 2-3 days without recharging unless you are on Groote at Christmas time - hot. No tire does everything perfectly. Troubleshooting deep cycle battery issues is fairly easy to do yourself with the aid of a multimeter, volt meter, or watt meter. then run an inverter off the deep cycle to power fridge and a few misc. As you might expect from a quality batter box, it does more than just run your ARB car fridge. Most can be discharged to 50% of their capacity before their life is compromised. However, there are several factors that determine how long your refrigerator would run before shutting off. Many people install a second battery under their bonnet right next to the main cranking battery. And some of the best ADM or Lead Acid batteries can be run down to 75% of their maximum charge without damage. On this blog, I share all the things I learn about Off-Roading Mountain biking and Camping as I go. ... My battery usually quickly broken, probably because they haven’t run out of battery yet but I still charge or charge too many times. The best option is a deep-cycle battery, which is designed (as the name suggests) to cycle from full to half empty and back again, anywhere from 1200 – 1700 times. depending on the battery you should only use between 30 to 50% Maximum of your batteries if you want longevity in your batterys, more then a year usage. This charge may be from the vehicle's alternator, a portable generator, or an appropriately sized solar panel. The best way to ensure your fridge will stay cold overnight and your car will start in the morning is with a Dual Battery System.. As the name suggest’s when you have a dual battery system installed you will have two batteries in your vehicle. 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. 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. When it comes to running your fridge from your car battery, there’s a right way and a wrong way of doing such a … Can I run an RV fridge on batteries? So if you have 2 x 12V batteries, a 100Ah battery and a 50Ah battery, the 100Ah battery will deliver 12V of power for longer (can you guess how long?). A decent refrigerator of this size at less than 30 degrees of room temperature should not use more than 30 to 40 hours of amps per day. Normal deep cycle batteries have a cycle life of about 1500 times, when you only use 30% of their capacity. Determine how many hours each day they will run. Ever since I got my Mitsubishi PB Challenger and started getting out and about in…. Favourite answer. For a better experience, please enable JavaScript in your browser before proceeding. Cheers. However, there are several factors that determine how long your refrigerator would run before shutting off. This is where my problem begins. Most golf cart sized deep cycle batteries eg Trojan t-105 can hold around 200-230 amps capacity at 6 volts. Deep-cycle batteries are generally rated at a 20-hour rate, or how many amps per hour can be given for 20 hours until the battery is dead. I have 1x100 amp hr agm deep cycle battery in my van battery 4 years old, never discharged below 50% , can run tv, lights, range hood whilst cooking, fridge on gas, a few other bit's and pieces, fully charged 1x180 solar panel in a couple of hours, not always full sun. eval(ez_write_tag([[300,250],'offroadaussie_com-banner-1','ezslot_16',128,'0','0'])); The best solution is to get a deep cycle battery, drop it into a good quality battery box (like one of the ArkPack ones) and power your fridge from that. Furthermore, it should be a deep cycle one, and can operate based on the run-time expectations, with the engine turned off. It includes a top-notch battery charger/conditioner to keep your battery in good shape. Cool. However, the shallower a discharge cycle, the longer a battery is likely to last. A battery to power the devices you want to run (generally a deep cycle battery). A decent fridge around that size under 30 degrees ambient temperature shouldn't use more than around 30 - 40 amp hours a day. Which means you can power your car fridge for longer between charges. Cranking batteries can’t be discharged more than about 25% before their lifespan is depleted. If you drain it completely you will shorten its life a lot. A 100ah battery should provide 1 amp for 100 hours, 2 amps for 50 hours, 3 amps for 33 hours etc. This site is owned and operated by Jamline Enterprises is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com. To give you and idea I can run my 50l Waeco CFX off my 120ah second battery for about 2 days in the middle of summer and about 4 in winter on average but this is very dependant on what is in the fridge how many times its opened I also run lights ect and am not too conscious about power consumption so I could probably get it up some without too much issue. Reply • May 18, 2016 at 12:40 pm BatteryStuff Tech Mark you typically want to charge at 10% or you risk overworking the charger. So comparing a 100Ah deep cycle battery and a 35Ah starting battery doesn’t make any sense. It sounds like your only going to be putting a 60ah battery in the small space. Which is why running your car fridge off your cranking battery isn’t the best idea. Photo Credit Hopefully, it makes sense! If the battery was designed for deep-cycle use, it should be able to handle such use. eval(ez_write_tag([[300,250],'offroadaussie_com-large-mobile-banner-2','ezslot_17',133,'0','0']));NOTE: These are theoretical maximums. volts × amps = watts. While you are camping deep inside without any hookup, you need to take help from these other sources to keep the appliances running. Our 2-way fridge uses around 400 watts on AC power, and we have 2 12-volt deep cycle batteries which rate around 90Ah each. Normal deep cycle batteries have a cycle life of about 1500 times, when you only use 30% of their capacity. How long will a deep cycle battery run a fridge? I’m a long way off knowing everything there is to know about 12V systems, but I do know people run their 12V batteries too flat, and damage them in the process. It would be fine if it ran out at some point on the 3rd day as long as it made it to somewhere around 11AM anyway. ... you need to get yourself the deep cycle batteries as they are meant to store large amounts of power. A battery bank designed to power an average American household for three days would need to supply 90 kilowatt-hours of energy. Your cranking battery is the one that was delivered under the bonnet of your car when you purchased it from the dealer. In this article, I’ll lay out the information that was given to me by Ark. Jamline Enterprises also participates in affiliate programs with commissionfactory.com. The same applies for anything that you use for a long time while your car isn’t running (camp lights for example). 4x4earth is Australia’s largest free and independent 4 wheel drive website, and we display almost 500,000 pages a month and produce Australia’s number 1 automotive podcast. 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