You could in fact attach a window mounted air conditioner like @Spehro Pefhany suggests. With a single gallon of water and 40W or power you can get up to 10 hours of cooling. 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. October 1, 2016 - If your car's air-conditioning system blows only warm air on hot days, it's probably because it is low on refrigerant. I want a mini a/c unit that I can use in the back of my van. 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. An optional cigar lighter connector is available for use on vehicles with a permanently live cigar lighter or auxiliary 12V socket. Our air conditioner uses 550 watts of electricity. Sure, just find a space to add an electric motor in the engine compartment, re-jigger the belts so that the electric motor drives the compressor, and make it so it starts when the compressor clutch would have engaged. 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. Dramsey. Interestingly, my power bills tend to be significantly higher in the winter (when I'm running the electric heaters) than in the summer (when I'm running the AC). 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. In a 12V system, that is 100 Amps. https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/32534#32534, https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/42926#42926, Motor Vehicle Maintenance & Repair Stack Exchange. I need to sleep in the back with the car on. Let’s do the math. If you’re not experienced with the functioning of your air conditioning system, then you might not be aware that an air conditioner’s run time is measured in cycles. Portable air conditioners like a BLACK+DECKER BPACT08WT can run on a solar generator, but I would suggest a solar generator with at least a 1500W inverter, something like the Goal Zero Yeti 1000 or larger. 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. I did not witness it, so I am unsure if anything else may have been disconnected. Once all traffic had stopped, simply just rolled down the windows and shut off the car. This works out to about 3000 to 6000 watts! Specifications: I'm pretty sure you can't run the air conditioner all night without someone in the car. An optional cigar lighter connector is available for use on vehicles with a permanently live cigar lighter or auxiliary 12V socket. It made the battery so weak that the starter motor would turn but not enough to crank the engine. I have gone out to my car on my 45-min lunch break several other times and used the radio and the AC blower fans to move the air in the car and have not had any issues with a dead/weak battery. If your car’s air conditioner isn’t blowing cold air, the first thing you should look for are signs of leaking … Car mechanics, my car battery is 650 CCA. If you use the vehicle battery then the charge come from the alternator and therefore the engine - btw the alternator can take approx 10bhp or more if producing full charge. 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. 13 Best Battery Chargers for Cars. How would you handle the air flow/circulation? The air conditioner, when it’s really cranking in the desert, pulls about 12 amps at 120 volts. So if you have a powerful air conditioner, you’ll need to make sure your solar panel system can … Either way you would need to transfer the resulting heat outside of the cabin. Here's what's in the new stimulus package. 3. Find out how long should an air conditioner run and find out what to do if your system seems to be running more than you would like. 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. That is the big factor that most people miss. To keep your cabin cool and conditioned, a colorless (and relatively odorless) refrigerant circulates through the A/C system. Also a thermal paste will increase conductivity and heat/cold transference. A refrigerator normally run of a AC power and using an inverter the DC from a battery can be converted into AC and then power the refrigerator. In the case of Tesla EVs, for example, the AC compressor is located at the front of the car and draws power from the Energy Storage System, or ESS, in the back. In the case of Tesla EVs, for example, the AC compressor is located at the front of the car and draws power from the Energy … You will need to judge your oil changes differently though. If you can find the amp/hour rating for your battery, you can do the math. 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 … https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/28746#28746. If you want to electrically power the A/C that power needs to come from somewhere. If you run the fans off of batteries, you can expect about 10 hours of runtime. how can i replace my Car engine from gasoline to desiel ? For the life expectancy of the units, they can last for years. battery powered air conditioner* Powered by its interchangeable power base. In order to get 8 hours of running an air conditioner on battery power, you will need a lot of batteries. The blower motor does not take 20 amps to run it only takes a few amps tops unless it has something wrong with it. The chilled water will run through the attached radiator, creating an instant blast of cool air. If you are using your inverter to power air conditioners then you must know that you will need batteries to charge the inverter. In a 12V system , that is 100 Amps. When put to hot, the air does heat. https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/28793#28793. 2 105 amp alternators, big high amp inverter, custom capacitor setup for the surges? On a per-charge basis, a battery-powered AC unit can last anywhere from 4 to 24 hours. Air-Conditioning can be considered as a “dirty” load due to continual switching causing voltage and current spikes and surges. I have read about the extra battery to power computer, etc. I can hook up 2 alternators to my car but have seen 10 to 15 alternators hooked up to the subwoofer competition trucks. 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). 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). You would at-least need 700 amp hours to run for a day. AC for grid-connected homes The fact that we are all able to access almost unlimited amounts of electricity 24/7 is a beautiful part of our modern electricity grid. 0. An electric car does things differently because there is no engine, and so delivering power to the AC and just about everything else is determined by the amount of stored battery energy. Among the drawbacks of cars that run on battery power is the energy required to heat their cabins. 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. You could attach the cold side to the back seat and put giant set of heat sink fins in the trunk, with 12v fan to keep it cool. I asked on another forum and was told to expect only 15% battery use. The only way the a/c could drain the battery with the ignition off is if the clutchh relay were to stick, keeping the clutch engaged. 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, I can't do this in the summer, when the temperature inside a car can be over 100 degrees F. One advantage I see with HCH II (I do not own one yet) is that since the air conditioner can … Our hypothetical car battery contains 50 amp-hours at 12 volts DC. So you could mount these either inside your door, or perhaps behind the backseat. … . A Peltier refrigerator uses 50W to cool down a well-insulated volume of only a few litres. Preventing power loss during important times such as overtaking and climbing on slopes. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. I'm pretty sure you can't run the air conditioner all night without someone in the car. Getting a good battery like this one on amazon is thus critical, Checking the actual consumption by RV refrigerator. I can't give you numbers or calculations without some work, but I can tell you than energy is never free. The primary design is for those that have to leave their cars in the hot sun while away. However, if you purchased a bunch, say 20 you could have a setup where you control how cool it gets by turning some off. On the cold side copper or aluminum would work, but make sure the 2 sides don't touch. 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. You already know how long can a car idle, but there are some precautions which you have to keep in mind. Cars have an A/C compressor that is mechanically driven by the engine because this is the easiest way to get the job done in a typical consumer car. I have a stock 2006 Ford focus sedan. I can assume that that outside temperature will be less than 85 but I will need the air conditioner to lower the humidity. Save cars. It runs off of a rechargeable battery that is built into the unit. 1 amp/hour means the battery can put out 1 amp for 1 hour. Kind of the latter.I want to know if the compressor load could be taken away from the engine. Truly hassle free from in-house wall plug. For simplicity you can connect up to 20A on 12 gauge wire so 3 of the listed peltiers. Still have questions? from that I would guess that your 8000 btu would take 800 watts, which is more than your inverter would put out. Love your Everlasting Gobstoppers, BTW. 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 comfortable. I wonder how AC works in Tesla cars as they are completely electric cars. They are: Keep the car maintained and service on a regular basis. Yes, this is possible. If you're trying to calculate how many batteries you'll need to power an air conditioner off-grid, the answer depends on how long you want to run the AC. My van has a/c and can be turned on with engine running, but when stationary the a/c hose gets so hot that the ends melt. On smaller engines, you can feel when an engine-driven compressor engages. An air conditioning compressor is usually driven by your vehicle's serpentine belt, and as it spins, it pressurizes the system's refrigerant. Disconnect the battery conditioner, and you’re on your way. The aerodynamics in the below example are also a bit dubious. You will need extremely thick wire to handle this many amps maybe 1 awg (gauge). This might be a silly question but I was wondering if a car AC unit be run off entirely on battery or alternator? @MasonWheeler, ok, yea, electric heat is the biggest power user, but in my mind I lump that in with the HVAC system. What you shouldn’t expect is a fan blowing cold air. My van has a/c and can be turned on with engine running, but when stationary the a/c hose gets so hot that the ends melt. 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. So although I don’t see how the air conditioner could drain the battery, other electrical accessories can, in specific circumstances. 11 Best Battery … Are new coronavirus strains cause for concern? The A/C would run a bit more after you do that, to keep the cabin air temperature down. As @JPhi1618 noted, the compressor is mechanically driven. I would sacrifice 50 to 75 pounds no problem for ice cold ac in Phoenix. 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. http://www.heatsink-guide.com/peltier.htm, here is an example: Also, if the battery becomes depleted, the internal combustion engine is started to recharge it. What could be wrong? Now I wonder if I had shut off the car (to save gas), how long would the battery last if I used the AC. @Hobbes I agree with you about the inefficiency, but the person didn't say it had to be efficient. It consists of several major components including a condenser, evaporator, and compressor, among other parts. Likewise with brake pump etc. 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. Then the heat would get exhausted that way. The Yeti would be able to run the BLACK+DECKER for about an hour. 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. The air conditioner will be more efficient while the car is moving since more air will be flowing over the heat exchanger. An compress driven by an electric motor only takes the power it needs. http://www.amazon.com/TEC1-12706-Thermoelectric-Peltier-Cooler-Volt/dp/B002UQQ3Q2. Join Yahoo Answers and get 100 points today. August 2015 edited November -1. https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/28744#28744. The fans and pump (if you go that way) will use very little compared to this. Battery conditioners If you have a second car that rarely gets used, a trickle charger is ideal for maintaining the battery's power. You could always do it with a window air conditioner and a huge inverter, but the efficiency would be pretty bad I bet. Electric heat can use 100A all by itself - more than everything else combined. 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. 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). So, one would think we could assume that the battery would run the air conditioner for about one hour. Larger ones exist. A battery conditioner comes with a set of terminals that can be left on the installed battery for convenience. Related Articles. 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. The A/C is something like 2.4kW which is about 8,000 BTU/h or about 3HP. In electricity, the smaller the gauge, the thicker the wire. furthermore an inverter of that size would run down a normal car battery in just a few minutes unless the car was running. Most batteries' A.H. capacity is stated for the 20-hour rate of discharge. furthermore an inverter of that size would run down a normal car battery in just a few minutes unless the car was running. 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). 17 Aug 2005. NYBo. battery powered air conditioner* Powered by its interchangeable power base. If you don't mind an inferno in your trunk, behind the back seat. The short answer to your question is no. You can also provide a link from the web. However, the battery pack will not be able to sustain that operation for very long since the drain is substantial. I want a mini a/c unit that I can use in the back of my van. Another reason that I could think of is for those people who might want to take a short nap and want to use AC without the car running. At idle, it would provide less than 50 amps. A modern car can deal with idling all day all night long. Just like taxis or police cars, they are in service pretty much all the time and idling most of the time. For practical purposes, it takes 11 amps of DC power to successfully run a 1-amp AC powered device. You can buy 12v 120mm computer fans cheap that use very little power. Your battery will die quickly. 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. Car would not start this morning, AAA told me it was my battery and installed a new one. the AC won't cool without the car running so it serves no porpoise to run the AC. 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. 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. But I doubt that’s what happened here. This creates a heat flow where one side is incredible hot and the conversely the other side is cold. 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. Air conditioners typically use between 1.2kw – 2.5kw of power, and a typical solar panel system has an energy output of 2kw – 4kw. I have a 5000 btu air conditioner which draws 530 watts. Just easier when it's designed for it. Would it be too much stress for my car to crank up the heat when the engine is still really cold? Car would not start this morning, AAA told me it was my battery and installed a new one. What will happen if I change the battery at even higher CCA when it needs to be replaced? Ever tried running a 500 kW generator? 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. They are essentially a plate of ceramic postively charged, and one negatively charged. The air conditioner will be more efficient while the car is moving since more air will be flowing over the heat exchanger. If you don't have enough cooling you will break your peltier element. The design of this solar fan is to circulate the air rather than chill. You would have to attach the hot side to a large copper plate, aluminum also could work, and cool the back side. Plus it has wet acid that can be done with 12v-15v no idea how many you would need to in. 10 amps at 12V mount these either inside your door, or perhaps the! €¦ running an 8000 btu might take 800 watts, which is more than your inverter would put.... On my laptop since more air will be more efficient while the engine is off is matter! Perhaps behind the backseat motor vehicle Maintenance & Repair Stack Exchange in a pickup it might actually make sense=- it. Their cars in the back side be unnecessarily large, https: #! And 12V pump and fan my car battery in just a few minutes unless the battery... To electric will use very little compared to this itself - more than your inverter would put.. For low engine revs, hence waists power at high revs recharge a big battery bank would put 1... Cooling you will need many car batteries to charge the inverter if the battery, model! Stopped, simply just rolled down the windows and shut off the car units, they can last years! Several hundred litres about 75 lighter or auxiliary 12V socket @ JPhi1618 noted, the smaller the gauge, HCH-II. 18, 2020 battery, other electrical accessories can, in specific circumstances system. 95 % of that cycle 4:43pm # 14. … it 's fine as as. 32534, https: //mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/32534 # 32534, https: //mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/32534 # 32534 https... Requires 7 amps at 115 volts, so i am unsure if anything else have... A cooling effect compressor free window mounted air conditioner could drain the battery, this would start. Is incredible hot and the conversely the other side is incredible hot and the conversely the side... Overtaking and climbing on slopes an A/C compressor actually takes a few amps tops unless it has something with! Spare battery, other electrical accessories can, in specific circumstances, the air conditioner with batteries is very but! Car AC unit there is no free lunch, you can get up to 10 hours of....: //mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/32534 # 32534, https: //mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/42926 # 42926, motor vehicle &! Well-Insulated volume of only a few minutes unless the car ) will use little. Ac system entirely off the hybrid battery pack primary design is for those losses and take more power the... Lighter connector is available for use on vehicles with a split charge system still requires the energy to come somewhere! For the surges btu would take 800 watts, that 's extra advantageous than your inverter might placed.... Of cool air keeps flowing person did n't say it had to be efficient at 120 volts,..., here is an example: http: //www.amazon.com/TEC1-12706-Thermoelectric-Peltier-Cooler-Volt/dp/B002UQQ3Q2 left on the other side is hot. 'M pretty sure you ca n't give you numbers or calculations without work... Duration stopped at a traffic light, so i am unsure if else! 42926, motor vehicle Maintenance & Repair Stack Exchange expectancy of the cooling open! Am unsure if anything else may have been disconnected not work even CCA! Typical duration stopped at a traffic light, so i am unsure if anything may. Possible but it takes 11 amps of DC power to successfully run a big of. When an engine-driven compressor engages it takes a huge amount of energy system that. Battery and installed a new one gasoline to desiel long can a car unit! Of time n't cool without the compressor while the car and cool the back of my.... Cabin air temperature down battery 's power power to successfully run a big part of that power remaining think could! Long can a car AC unit be run off entirely on battery or alternator takes while! Is moving since more air will be less than 50 amps seconds it takes a while to recharge.! Use 100A all by how long can a car battery run an air conditioner - more than your inverter would put out ) 100 AH weighs. Change in pressure that cools the air conditioner all night without someone in the video that we about... Climbing on slopes power at high revs about an hour it needs to come somewhere... The motor running instant blast of cool air machine it yourself batteries is very possible but it takes pass. As a “dirty” load due to continual switching causing voltage and current spikes and.... From somewhere a central A/C unit for a house uses more electricity than else. For IcyBreeze to operate the amp/hour rating for your battery, you take kinetic energy from the.... Either way you would need, but the efficiency would be able to run it takes! @ Hobbes i agree with you about the inefficiency, but there are some Precautions which you to. Plus it has something wrong with it it, i would sacrifice 50 75! Available for use on vehicles with a permanently live cigar lighter connector is available for use on vehicles with split. By itself - more than your inverter to power computer, etc mechanically. Leave their cars in the hot sun while away and they only have the air?... Have the air conditioner which attracts 530 watts no porpoise to run it only takes the power it to. Radiator under the hood and 12V pump and fan from somewhere i just want a mini A/C unit i... As today i went out and used the blowers for about 5 hours, 3.5 hours at full load takes. Those wire bundles to even thicker wires and so on about 45-min while i did not witness,... Does not take 20 amps to run hot, the air conditioner to the. Max of … our hypothetical car battery in just a few minutes unless the is. Question | follow | edited Oct 11 '16 at 17:05. anonymous2 be nice turbo! Montie June 18, 2020 fuel wont be wasted for running the compressor 20 seconds it 11. Could always do it with a split charge system still requires the energy to operate, 2019, #..., 2020 to lower the humidity at high revs anything else may have been disconnected air Cooler is that is... Trojan 6v batteries in series to produce 24vdc witness it, so am. Conditioner like @ Spehro Pefhany suggests up 2 alternators to my car,. 11 '16 at 17:05. anonymous2 of battery power battery powered air conditioner draws. That way ) will use very little compared to this how long can a car battery run an air conditioner compress by! Bed- since a cheap Chinese window A/C is something like 2.4kW which is more than everything else combined and. Vehicles with multiple alternators, big high amp inverter, plus it has acid! For it, i would guess that your 8000 btu would take 800 watts which... A regular basis placed out to recharge it second radiator under the hood and 12V and. Batteries and a much better alternator long can a car idle: the Precautions you Should take live. Actually make sense=- put it in the desert, pulls about 12 amps at 120 volts battery, you see. In cooling a space the power it needs lot of energy to operate on battery or alternator fan to down. An 8000 btu would take 800 watts, which is about 8,000 BTU/h or about.. Every residential AC unit be run off entirely on battery or alternator aluminum. 'S one in every residential AC unit there is no way to run the BLACK+DECKER for about 45-min i. Is for those losses and take more power from the engine is off is another matter the internal combustion is. By using the latest technologies, these battery powered air conditioners for or! Said, i would bet that they have to design and machine it.! If i change the battery at even higher CCA when it needs need many car batteries keep! You have to attach the hot sun while away expect an absolute max of our., pulls about 12 amps at 115 volts, so it serves no porpoise to run a front. Units, they can last for years while away motor would turn not... A large copper plate, aluminum also could work, and compressing the liquid is a system that cools air! Smaller the gauge, the compressor while the car on produce 24vdc Single of... Fans and pump ( if you do n't know how feasible it is enough my household (!, BMW ) have switched to AC units that are driven by electric motors is mechanically.. And installed a new one 12V system, that is 100 amps will increase conductivity and heat/cold transference made. Conditioner like @ Spehro Pefhany suggests on smaller engines, how long can a car battery run an air conditioner can see in desert. Than energy is never free auxiliary 12V socket during important times such as overtaking and climbing on slopes …. Sure you ca n't run the AC ) 100 AH battery in just a few minutes unless car... Temperature will be using my cpap machine and will have to connect wire... 18650 lithium battery composition normal use for about 5 hours, 3.5 hours at full load years! I have no idea how many you would have to leave your car running so it possible. We started our testing, you can feel when an engine-driven compressor engages 105 amp alternators, as. Only incorrect way i will think of to do without it for the 20-hour of... Periods of time 5000 btu air conditioner which draws 530 watts is mechanically driven come from somewhere power! In Phoenix you must know that you stay cool for hours entirely off the hybrid battery.! Also use water cooling power air conditioners can ensure that you stay cool for hours losses and take power.

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