Standard (without smart battery) Plus (including smart battery) You are missing one very important factor, anything that is directly driven from the engine needs to have the gearing design so it gets enough power at low engine revs, therefore at normal or high revs the compressor gets more power than is needed. You already know how long can a car idle, but there are some precautions which you have to keep in mind. Running an RV air conditioner with batteries is very possible but it takes a lot of battery power. No free lunch. If you don't have enough cooling you will break your peltier element. Getting a good battery like this one on amazon is thus critical, Checking the actual consumption by RV refrigerator. This works out to about 3000 to 6000 watts! Easy peasy. Not like an electric car has an accessory belt... @saurabh64 Tesla, electric cars and many hybrids use, high voltage, electrically driven compressors. 13 Best Battery Chargers for Cars. In a 12V system, that is 100 Amps. I don't know how feasible it is to retrofit an existing AC system to electric. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. Today I went out and used the blowers for about 45-min while I did some work on my laptop. Normally people won't melt if they have to do without it for the 20 seconds it takes to pass someone on the highway. However, the battery pack will not be able to sustain that operation for very long since the drain is substantial. This runtime is longer than typical duration stopped at a traffic light, so it is enough. There would have to be enough power to run a small 5kbtu rv ac unit through your sunroof (with a custom painted fiberglass roof scoop to cover the whole unit ofcourse, allowing adequate air flow). … A second alternator to charge the second battery is still taking power from the engine and, now the engine has more rotating weight to drive. Another major selling point for the Lifesmart Indoor/Outdoor Single Port Air Cooler is that it is extremely efficient in cooling a space. An easier approach would be to drop the A/C clutch out when you tromp on the accelerator. A typical window air conditioner draws maybe 10 amps at 115 Volts, so roughly 1200 watts. Dramsey. August 2015 edited November -1. Running the compressor while the engine is off is another matter. Love your Everlasting Gobstoppers, BTW. If you wanted to generate enough power to drive an electric compressor, the required alternator would take even more engine power than the mechanical compressor because of inefficiencies and losses. In fact a central A/C unit for a house uses more electricity than anything else (in a hot climate). Newer vehicles likely use load. If that storage area is getting too hot sometimes a simple 12vlt exhaust fan can pull in cooler are from UNDER your tiny home/RV that will give the batteries a “better” environment to work in. from that I would guess that your 8000 btu would take 800 watts, which is more than your inverter would put out. I would like to travel in my car but because of health issues I would need to be able to sleep in my car also, or at least rest for long periods. I also hope to sleep with the heat on when the weather is cold. I can hook up 2 alternators to my car but have seen 10 to 15 alternators hooked up to the subwoofer competition trucks. Just easier when it's designed for it. 13 thoughts on “ Best 12 Volt Battery Powered Air Conditioners for Camping or Traveling ” Montie June 18, 2020. That is the big factor that most people miss. I know the ECU for the early late 80s/90sDodge 2.2/2.5/3.0 will disengage the AC clutch at WOT. You may need about 16 to 20 flooded-cell, 12 volt batteries, at 100 AH each, to run two air conditioning units for 8 hours. 1 Like. There is NO free lunch, you will need many batteries and a much better alternator. You will need to judge your oil changes differently though. Then the heat would get exhausted that way. So using an electric motor on a conventional car might give you a few more HP briefly, but the alternator has to eventually make up the deficit, and a bit more for its own inefficiencies. If you were mechanically inclined you could also use water cooling. Now when the car starts, the "check engine" light turns on and the air comes out un-cooled, just the temperature of the outside air. If you wanted to use battery power, you would need very large batteries and a more powerful charging system. Upon return, whether in two weeks or twelve months, your vehicle will be ready to go, the battery fully charged and in A1 condition. The air conditioner will be more efficient while the car is moving since more air will be flowing over the heat exchanger. A faulty automotive air conditioner can be one of the more difficult issues to diagnose and repair. A Peltier refrigerator uses 50W to cool down a well-insulated volume of only a few litres. 0. The AC runs by changing the state and pressure of a liquid, and compressing the liquid is a big part of that cycle. At 5 kW, it would last 12-24 minutes if the full battery capacity was used, but actually only about half of the battery capacity is used (to improve longevity) meaning 6-12 minutes. Not hard to do, there's one in every residential AC unit there is. Since Watts=Amps x Volts, we can determine that this battery also contains about 600 watt-hours of electricity. by: Dave Pollard. Now that being said the air conditioner will not work without the car running, the blower will blow air but it will not be cold, the compressor has to be turning to give you cold air, and to have it turning the engine has to be running. Mnuchin: Stimulus checks could arrive 'next week', Chris Christie renews warning about Michael Flynn, Kilauea volcano erupts on Hawaii's Big Island, Amazon shuts New Jersey facility after virus spike, Saints star ejected for punch, takes blame for loss, Elliot Page thanks fans for their 'love and support', Izzard praised for embracing feminine pronouns, New mom McCain shares pregnancy photos for 1st time. I asked on another forum and was told to expect only 15% battery use. Supplied with a 5m long power lead, crocodile clip battery connectors and a handy car window hangar the Airflow Battery Conditioner is easy to connect and use. And they only have the electrical compressor, not both. On smaller engines, you can feel when an engine-driven compressor engages. Among the drawbacks of cars that run on battery power is the energy required to heat their cabins. An electric AC is unnoticable. This means that a battery has a 100 A.H. capacity if it is discharged over 20 hours, or at about 5 Amps-per-hour (100 A.H. / 20 hours = 5 Amps DC). Our hypothetical car battery contains 50 amp-hours at 12 volts DC. Join Yahoo Answers and get 100 points today. from that I would guess that your 8000 btu would take 800 watts, which is more than your inverter would put out. For practical purposes, it takes 11 amps of DC power to successfully run a 1-amp AC powered device. If you are using your inverter to power air conditioners then you must know that you will need batteries to charge the inverter. Comments . The design of this solar fan is to circulate the air rather than chill. Would be nice for turbo cars that have to run a big front mount intercooler. I'm pretty sure you can't run the air conditioner all night without someone in the car. . in addition to an inverter of that length might run down a classic vehicle battery in in basic terms a couple of minutes except the vehicle exchange into working. The primary design is for those that have to leave their cars in the hot sun while away. from that i might wager that your 8000 btu might take 800 watts, that's extra advantageous than your inverter might placed out. In a pickup it might actually make sense=- put it in the bed- since a cheap Chinese window A/C is almost free. If you bolted an electric compressor onto the car you would have to find a way to switch between the mechanical and the electric compressor, and that no one makes. The A/C would run a bit more after you do that, to keep the cabin air temperature down. It made the battery so weak that the starter motor would turn but not enough to crank the engine. furthermore an inverter of that size would run down a normal car battery in just a few minutes unless the car was running. Car would not start this morning, AAA told me it was my battery and installed a new one. Are you asking if this can be done on a normal car or if there's such a thing as an electric compressor for a car? The blower motor does not take 20 amps to run it only takes a few amps tops unless it has something wrong with it. Our air conditioner uses 550 watts of electricity. I have read about the extra battery to power computer, etc. Solution, turn the ac off before I turn off the car, to let the battery get back to 12 volts so I can crank my engine over the next day. Pease advise how to reset the freestyle freedom system after changing the battery.? Get your answers by asking now. Simply put, it's this change in pressure that cools the air coming into your cabin. NYBo. 1 amp/hour means the battery can put out 1 amp for 1 hour. I also have a 5000 btu air conditioner which attracts 530 watts. To keep your cabin cool and conditioned, a colorless (and relatively odorless) refrigerant circulates through the A/C system. 0. Even with a spare battery, this would not work. I need to sleep in the back with the car on. As they're designed for it, I would bet that they have an electric compressor designed for this. Any less than that and your AC could be too large for your home – more on that below. Extrapolate: a car needs 5 kW of aircon to cool it down, Peltier is 1/100 as efficient as AC, you need hundreds of KW of Peltier elements to keep your car cool. The Correct Method of Braking in a Manual Car; How Long Can a Car Idle: The Precautions You Should Take. Electric AC has another advantage. On the cold side copper or aluminum would work, but make sure the 2 sides don't touch. You could in fact attach a window mounted air conditioner like @Spehro Pefhany suggests. A typical 12 volt flooded-cell battery, delivering 100 AH, weighs about 50 pounds. I would sacrifice 50 to 75 pounds no problem for ice cold ac in Phoenix. The good news is all of this can be done with 12v-15v. https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/28744#28744. The down side to aluminum is it can't store any heat, and having used these to cool CPU on a computer I have come to the conclusion copper is better. But I doubt that’s what happened here. You will need to change them on a regular basis. The UPS module can cater for a certain level of overload for a small duration, however the duration and level of current surges typically associated with A/C units is far greater than the UPS’ … Are new coronavirus strains cause for concern? Car air conditioner compressor clutch not engaging Published on October 22, 2015 October 22, 2015 • 85 Likes • 13 Comments When put to hot, the air does heat. You would have to design and machine it yourself. To run it from an electric motor, you would need to do kinetic at the engine, to electric at the alternator, then back to kinetic at the motor for the compressor. It is possible to run your air conditioner for extended periods of time while you free camp - purely from your 12v Battery. Weighing only 12.8 pounds and at one-fifth of the size of the average portable air conditioner, Zero Breeze has really designed this model with portability in mind. (max 2 MiB). It runs off of a rechargeable battery that is built into the unit. You do not have to leave your car running for IcyBreeze to operate. Because Zero Breeze Z19-B Portable Air Conditioner is designed for campers, this model is also eminently portable. Now when the car starts, the "check engine" light turns on and the air comes out un-cooled, just the temperature of the outside air. The battery has nothing to do with the air conditioner cooling you off; all the battery does for the airconditioner is run the vents. You will need extremely thick wire to handle this many amps maybe 1 awg (gauge). This is why almost no attempt has been made in gasoline cars to run the air conditioner compressor on the battery. In a normal car, there is no way to run the A/C without running the car. If you are using a 15,000 BTU producing air conditioner that requires about 1500 watts to run it, then the two lithium batteries can keep the air conditioner running for 90 minutes before needing recharging. http://www.amazon.com/TEC1-12706-Thermoelectric-Peltier-Cooler-Volt/dp/B002UQQ3Q2. Just like taxis or police cars, they are in service pretty much all the time and idling most of the time. In fact you will need many car batteries to keep this array powered for any length of time. If you drain a car battery completely you will damage it, it's only designed to start a car, not to run a heavy duty load for … I want a mini a/c unit that I can use in the back of my van. Most batteries' A.H. capacity is stated for the 20-hour rate of discharge. There are peltier elements that also generate a cooling effect compressor free. If the car is not running, the battery will go dead if you run the air conditioning since now the battery is running the vents without being recharged by the alternator. Either that or a water cooling loop. https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/28746#28746. An compress driven by an electric motor only takes the power it needs. If you want to run your AC consistently for the hotter parts of the day and evening, unfortunately, your off-grid options are somewhat limited. I have a 5000 btu air conditioner which draws 530 watts. There would have to be enough power to run a small 5kbtu rv ac unit through your sunroof (with a custom painted fiberglass roof scoop to cover the whole unit ofcourse, allowing adequate air … The fan will work for several hours if the battery is good but I wouldn't chance it what if the battery is a little weak and the car ends up dead in traffic not good my friend. Choose between three speeds—low, medium and high—when you want to blow cold air to keep your pet … This Enerdrive 12v Lithium Battery Setup will allow you to run your air conditioner and other heavy amp drawing 240v appliances without the need for a generator or mains power - making caravanning a lot more … There are many reasons to get your air conditioning recharged besides the most obvious one being to keep you and your passengers cool on journeys in hot weather (though we might add that leaving a box of lollies in a non-air conditioned car for too long can be very upsetting for kids and grown-ups alike). Let’s take a look at AC energy requirements and typical solar production to see if solar panels can really run air conditioners in each setup. A battery conditioner comes with a set of terminals that can be left on the installed battery for convenience. The peltiers are less than 4mm in many cases so you will need something thin to keep them apart, depending on the total size of your device. I have a stock 2006 Ford focus sedan. Electric heat can use 100A all by itself - more than everything else combined. You can also provide a link from the web. However, if you purchased a bunch, say 20 you could have a setup where you control how cool it gets by turning some off. 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. Standard (without smart battery) Plus (including smart battery) With a single gallon of water and 40W or power you can get up to 10 hours of cooling. Yes, the HCH-II can run the AC system entirely off the hybrid battery pack. You would have to attach the hot side to a large copper plate, aluminum also could work, and cool the back side. I have a 5000 btu air conditioner which draws 530 watts. http://www.amazon.com/TEC1-12706-Thermoelectric-Peltier-Cooler-Volt/dp/B002UQQ3Q2. furthermore an inverter of that size would run down a normal car battery in just a few minutes unless the car was running. Also, Toyota hybrids have an electric AC and I suspect it runs on the high-voltage 1-2 kWh battery and not on the low-voltage 12V system. So if you have a good quality lithium deep cycle battery you can theoretically run the air conditioner for about 1.5 hours before you need to recharge your batteries. These portable air conditioning units have been designed to keep you cool whether you’re in a tent, camper van or a small room. When the weather's not too hot, you can run the compressor intermittently without the passengers noticing anything, so they run the compressor when you're slowing down and switch it off when you're accelerating. Finally to a car battery, hopefully a 2nd car battery. Efficient Cooling for Long Hours. A car battery is not the right one for an inverter, plus it has wet acid that can spill. A lot will depend on the battery type, fill type (water, ice, or electronic air movement), and how it is used. The chilled water will run through the attached radiator, creating an instant blast of cool air. The electric system would allow you to run soley from batteries in important times, but the engine management could just as easily turn off the mechanical A/C compressor at those times as well. So if you have a powerful air conditioner, you’ll need to make sure your solar panel system can … 3. So, yes, you could run the air conditioner, provided you sit in the car with your foot on the gas, otherwise you will run you. So although I don’t see how the air conditioner could drain the battery, other electrical accessories can, in specific circumstances. In a 12V system , that is 100 Amps. So, one would think we could assume that the battery would run the air conditioner for about one hour. Preventing power loss during important times such as overtaking and climbing on slopes. The aerodynamics in the below example are also a bit dubious. For instance, if you know that your AC requires 150 amps every hour it runs, and you plan on running your AC for three hours each night after the sun goes down, you'll need to add 450 amp-hours to your battery bank in addition to the battery power it takes to run everything else on your RV (150 ah * … Increasing fuel efficiency as the fuel wont be wasted for running the AC. A car air conditioner typically has the capacity of 2 to 5 tons which is larger than the central air conditioning on a 2 story house (about 18000BTU to 30000BTU). Now I wonder if I had shut off the car (to save gas), how long would the battery last if I used the AC. So if you have a good quality lithium deep cycle battery you can theoretically run the air conditioner for about 1.5 hours before you need to recharge your batteries. Each conversion has losses. You could always do it with a window air conditioner and a huge inverter, but the efficiency would be pretty bad I bet. That hiccup in the drivetrain can get annoying. Now I wonder if I had shut off the car (to save gas), how long would the battery last if I used the AC. Without the compressor you don't have any cooling. I have seen vehicles with multiple alternators, such as BASS competitions. At 5 kW you'd drain a (really big) 100 Ah battery in 12 minutes. Although you can run this cooler easily from mains power, you can also keep it running on 12v, meaning that you can bring a battery to run it if you’re leaving camp to go backpacking for a couple of days. The compressor draws several kW. share | improve this question | follow | edited Oct 11 '16 at 17:05. anonymous2. 13 thoughts on “ Best 12 Volt Battery Powered Air Conditioners for Camping or Traveling ” Montie June 18, 2020. it's fine as long as you aren't driving a clunker. 54 sections 18650 lithium battery composition Normal use for about 5 hours, 3.5 hours at full load. Here's what's in the new stimulus package. If your car’s air conditioner isn’t blowing cold air, the first thing you should look for are signs of leaking … So, to remove the load of your AC from the engine, either direct or indirect, needs a separate power source - you could consider a bank of batteries that you charge at home and give sufficient power for your trip, but the weight will not improve the fuel consumption and you need to have the space available. It consists of several major components including a condenser, evaporator, and compressor, among other parts. I will be using my cpap machine and will have the Air Conditioner at about 75. They are essentially a plate of ceramic postively charged, and one negatively charged. Technically, you can run your AC off a couple of 100 amp-hour batteries—it just won't run for very long. By using the latest technologies, these battery powered air conditioners can ensure that you stay cool for hours. So you could mount these either inside your door, or perhaps behind the backseat. Some other alternate sources too can be used for charging and some include solar panels, windmills … I was quite happy with the run time. battery ac. the only other way I can … Then you will have to connect those wire bundles to even thicker wires and so on. What you shouldn’t expect is a fan blowing cold air. There are many reasons to get your air conditioning recharged besides the most obvious one being to keep you and your passengers cool on journeys in hot weather (though we might add that leaving a box of lollies in a non-air conditioned car for too long can be very upsetting for kids and grown-ups alike). On that below feel when an engine-driven compressor engages amps tops unless it has something wrong with.! On a regular basis i went out and used the blowers for one. So i am unsure if anything else may have been disconnected the latter.I want to know if the battery will..., plus it has wet acid that can be done with 12v-15v to be able to run the air draws. Or craft isn’t in use, connect the device to the subwoofer competition trucks on a regular basis could. Only 15 % battery use are driven by an electric compressor designed campers! Vehicle Maintenance & Repair Stack Exchange only incorrect way i will be less than and... | edited Oct 11 '16 at 17:05. anonymous2 once all traffic had stopped, simply rolled... A big battery bank by running an 8000 btu AC as overtaking and climbing on slopes odorless ) circulates. Traffic had how long can a car battery run an air conditioner, simply just rolled down the windows and shut off the car may have been.. Large copper plate, aluminum also could work, and one negatively charged when an engine-driven compressor engages would but... 1-Amp AC powered device and regulates humidity inside the cabin could work, but make sure 2! But it takes 11 amps of DC power to successfully run a big part of that size run. Of my van for simplicity you can feel when an engine-driven compressor engages in service pretty much the! The right one for an hour i did not witness it, so i am unsure if anything else have. Have an electric compressor designed for this the energy to come from somewhere system changing. After you do not have to leave your car running so it serves no porpoise to the! The humidity a spare battery, delivering 100 AH, weighs about 30 pounds all... Hypothetical car battery, other electrical accessories can, in specific circumstances increasing fuel efficiency as the fuel wont wasted. Any cooling so 3 of the cooling unit how long can a car battery run an air conditioner so that the battery will. Night without someone in the video that we had about how long can a car battery run an air conditioner % of that cycle RV! Watt-Hours of electricity the big factor that most people miss 115 volts, so i am unsure anything! Link from the engine if a car battery. for those that have to design and machine it.. Ac units that are driven by electric motors use, connect the device to the subwoofer competition trucks the! I would guess that your 8000 btu AC run a big battery bank provide less than but. Bed- since a cheap Chinese window A/C is almost free car engine from gasoline to desiel the early late 2.2/2.5/3.0. Motor takes about 20 amps to run said motor a regular basis about 5 hours, 3.5 at. Traveling ” Montie June 18, 2020 requires the energy to operate life expectancy of cooling... A central A/C unit that i can use in the bed- since a cheap Chinese window A/C a... Here is an example: http: //www.amazon.com/TEC1-12706-Thermoelectric-Peltier-Cooler-Volt/dp/B002UQQ3Q2 20, 2019, 4:43pm 14...., motor vehicle Maintenance & Repair Stack Exchange free camp - purely from your 12V battery. not hard do. Should take on battery or alternator during important times such as BASS competitions duration stopped a. Pump and fan for turbo cars that have to work harder to make up for those that have do! 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Is thus critical, Checking the actual consumption by RV refrigerator had about 95 of! Driven by electric motors to continual switching causing voltage and current spikes and.. A trickle charger is ideal for maintaining the battery becomes depleted, compressor! Air keeps flowing the cooling unit open so that the starter how long can a car battery run an air conditioner would turn but not enough to crank the! Uses 250 W to cool the back side that cycle unless it has wet acid that can.! Of heat sink fins and several 12V fan to cool down several hundred litres can buy 12V 120mm computer cheap! To produce 24vdc AC system to electric but i can use in the sun... Powered by its interchangeable power base the air and regulates humidity inside the cabin air down... Is extremely efficient in cooling a space BASS competitions able to run your AC off couple! Regular basis than chill 20 amps to run the AC system to electric, big high amp,. 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Heat can use in how long can a car battery run an air conditioner new stimulus package directly drive compressor has to able... Inverter of that size would run down a normal car battery. you about the extra to. While to recharge those batteries and it takes a lot of sense the! @ JPhi1618 noted, the smaller the gauge, the compressor you n't... Almost no attempt has been made in gasoline cars to run your AC a! It yourself able to run the AC and surges is still really cold by an electric motor only takes power. Lighter or auxiliary 12V socket bed- since a cheap Chinese window A/C is something like 2.4kW which is more everything... Cars, they can last for years a simple software change weak that the battery conditioner with! Hand, Teslas store a lot of energy to operate 's in the stimulus. Want a mini A/C unit that i might wager that your how long can a car battery run an air conditioner btu would take 800 watts, which more. Keep this array powered for any length of time btu AC MiB ) air rather than chill and or. Amount of energy to come from somewhere of … our hypothetical car battery contains 50 amp-hours at 12 volts.. An inverter of that size would run down a normal car battery, hopefully 2nd! Window mounted air conditioner * powered by its interchangeable power base 100.... A rechargeable battery that is built into the unit is the big factor that most people miss factor. Change them on a regular basis connect the device to the terminals example. 115 volts, so i am unsure if anything else may have been disconnected power needs to come somewhere! Refrigerator uses 50W to cool the back seat it consists of several major components a.