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. share | improve this question | follow | edited Oct 11 '16 at 17:05. anonymous2. A faulty automotive air conditioner can be one of the more difficult issues to diagnose and repair. Larger ones exist. 3. 13 thoughts on “ Best 12 Volt Battery Powered Air Conditioners for Camping or Traveling ” Montie June 18, 2020. Car would not start this morning, AAA told me it was my battery and installed a new one. At 5 kW you'd drain a (really big) 100 Ah battery in 12 minutes. 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 … 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. That is the big factor that most people miss. eddo March 20, 2019, 4:43pm #14. … 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. how can i replace my Car engine from gasoline to desiel ? July 5, 2016, 8:15pm #7. A car battery is not the right one for an inverter, plus it has wet acid that can spill. If you have a 5-amp window air conditioner, you will need 55 amps of DC power to run the unit continuously. from that I would guess that your 8000 btu would take 800 watts, which is more than your inverter would put out. I did not witness it, so I am unsure if anything else may have been disconnected. http://www.amazon.com/TEC1-12706-Thermoelectric-Peltier-Cooler-Volt/dp/B002UQQ3Q2. NYBo. That hiccup in the drivetrain can get annoying. Yes, this is possible. 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. You will need to change them on a regular basis. Honestly, you will spend far less time and money by just parking in the shade and letting the AC run while the car idles to take your nap. You will then need a large array of heat sink fins and several 12v fan to cool the back side. If your alternator has a bad diode , your battery can drain. In order to get 8 hours of running an air conditioner on battery power, you will need a lot of batteries. 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. 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 … A car alternator recharges the battery and powers certain electrical systems like lights, radio, air-conditioning, and automatic windows. 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. That said, I don't have any idea how MUCH … Join Yahoo Answers and get 100 points today. Keep it in a … the AC won't cool without the car running so it serves no porpoise to run the AC. Related Articles. I can't give you numbers or calculations without some work, but I can tell you than energy is never free. By using our site, you acknowledge that you have read and understand our Cookie Policy, Privacy Policy, and our Terms of Service. The air conditioner will be more efficient while the car is moving since more air will be flowing over the heat exchanger. As they're designed for it, I would bet that they have an electric compressor designed for this. 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. I have a stock 2006 Ford focus sedan. Efficient Cooling for Long Hours. Simply put, it's this change in pressure that cools the air coming into your cabin. 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). 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. 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. 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. On the cold side copper or aluminum would work, but make sure the 2 sides don't touch. Let’s do the math. But if it's hot, is a battery powerful enough to run an air conditioner? However, if you purchased a bunch, say 20 you could have a setup where you control how cool it gets by turning some off. An Air Conditioner Should Run for 15-20 Minutes at a Time In a perfect situation, an air conditioner should run for 15-20 minutes at a time in mild temperatures. On a per-charge basis, a battery-powered AC unit can last anywhere from 4 to 24 hours. 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. https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/28746#28746. I want a mini a/c unit that I can use in the back of my van. Since Watts=Amps x Volts, we can determine that this battery also contains about 600 watt-hours of electricity. To keep your cabin cool and conditioned, a colorless (and relatively odorless) refrigerant circulates through the A/C system. The blower motor does not take 20 amps to run it only takes a few amps tops unless it has something wrong with it. When we started our testing, you can see in the video that we had about 95% of that power remaining. Say the air conditioner draws an average of 1200W per hour. Just like taxis or police cars, they are in service pretty much all the time and idling most of the time. Some other alternate sources too can be used for charging and some include solar panels, windmills … 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. Each conversion has losses. I'm pretty sure you can't run the air conditioner all night without someone in the car. https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/28793#28793. Choose between three speeds—low, medium and high—when you want to blow cold air to keep your pet … Your car’s A/C is a system that cools the air and regulates humidity inside the cabin. Electric AC has another advantage. Our air conditioner uses 550 watts of electricity. Not like an electric car has an accessory belt... @saurabh64 Tesla, electric cars and many hybrids use, high voltage, electrically driven compressors. 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. I know on my car there's a "full-throttle" switch that will disable the A/C compressor when I floor it, it's possible other cars have this too. They are essentially a plate of ceramic postively charged, and one negatively charged. https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/28744#28744. Where can I find the correct pressure for my tyres? 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). You could in fact attach a window mounted air conditioner like @Spehro Pefhany suggests. A modern car can deal with idling all day all night long. Not hard to do, there's one in every residential AC unit there is. Either way you would need to transfer the resulting heat outside of the cabin. Preventing power loss during important times such as overtaking and climbing on slopes. Battery conditioners If you have a second car that rarely gets used, a trickle charger is ideal for maintaining the battery's power. An optional cigar lighter connector is available for use on vehicles with a permanently live cigar lighter or auxiliary 12V socket. NYBo. By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy, 2020 Stack Exchange, Inc. user contributions under cc by-sa. 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. In a pickup it might actually make sense=- put it in the bed- since a cheap Chinese window A/C is almost free. An optional cigar lighter connector is available for use on vehicles with a permanently live cigar lighter or auxiliary 12V socket. A generator will … 1 Like. In a 12V system , that is 100 Amps. In a normal car, there is no way to run the A/C without running the car. 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. A typical window air conditioner draws maybe 10 amps at 115 Volts, so roughly 1200 watts. The high voltage part of that makes a lot of sense. 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. (How do I know this, lol) Not a perfect solution, but much cheaper and easier than trying to compress the AC coolant electrically. That test was done at full power and trying to cool a hot 86 degree F RV down to about 66 degrees F. 54 sections 18650 lithium battery composition Normal use for about 5 hours, 3.5 hours at full load. You do not have to leave your car running for IcyBreeze to operate. The possibility of a second battery with a split charge system still requires the energy to come from the alternator and engine. You could always do it with a window air conditioner and a huge inverter, but the efficiency would be pretty bad I bet. My household fridge (basically an AC unit) uses 250 W to cool down several hundred litres. Peltier elements are really inefficient. Dramsey. But, we have to consider several things first: I need to sleep in the back with the car on. And they only have the electrical compressor, not both. 0. 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. You will need to judge your oil changes differently though. yes he did: "avoid wasting fuel". 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. I have seen vehicles with multiple alternators, such as BASS competitions. When the vehicle or craft isn’t in use, connect the device to the terminals. 13 Best Battery Chargers for Cars. 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. For BMW, this is part of their Efficient Dynamics strategy, where they'll switch the compressor on/off depending on engine load to optimize fuel consumption. Hi, Guest ! Install a second radiator under the hood and 12v pump and fan. Pease advise how to reset the freestyle freedom system after changing the battery.? If my memory serves correctly.. it takes about 8HP worth of load to drive a vehicle A/C compressor in Phoenix on a hot day in a full size car. I will be using my cpap machine and will have the Air Conditioner at about 75. Truly hassle free from in-house wall plug. The A/C would run a bit more after you do that, to keep the cabin air temperature down. An A/C compressor spins at a dizzying rate, and the more you use the cool side of your thermostat, the more likely it is to eventually fail or leak. the blower motor takes about 20 amps to run. Upon return, whether in two weeks or twelve months, your vehicle will be ready to go, the battery fully charged and in A1 condition. 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. A typical 12 volt flooded-cell battery, delivering 100 AH, weighs about 50 pounds. Also beef up the electrical system enough to be able to run said motor. The battery has nothing to do with the air conditioner cooling you off; all the battery does for the airconditioner is run the vents. Still have questions? 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 … This means the alternator would have to work harder to make up for those losses and take more power from the engine. August 2015 edited November -1. I can hook up 2 alternators to my car but have seen 10 to 15 alternators hooked up to the subwoofer competition trucks. Even 10 of these is probably 90A with the pumps and fans. The primary design is for those that have to leave their cars in the hot sun while away. The Correct Method of Braking in a Manual Car; How Long Can a Car Idle: The Precautions You Should Take. Without the compressor you don't have any cooling. I want a mini a/c unit that I can use in the back of my van. @MasonWheeler, ok, yea, electric heat is the biggest power user, but in my mind I lump that in with the HVAC system. You would at-least need 700 amp hours to run for a day. The A/C is something like 2.4kW which is about 8,000 BTU/h or about 3HP. Likewise with brake pump etc. Either that or a water cooling loop. But I doubt that’s what happened here. An inverter changes the battery's DC output into AC power to run your AC appliances (including your air conditioning unit). Testing out my battery bank by running an 8000 btu ac. So, one would think we could assume that the battery would run the air conditioner for about one hour. Getting a good battery like this one on amazon is thus critical, Checking the actual consumption by RV refrigerator. 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. I wonder how AC works in Tesla cars as they are completely electric cars. Yes, the HCH-II can run the AC system entirely off the hybrid battery pack. A lot will depend on the battery type, fill type (water, ice, or electronic air movement), and how it is used. Your battery will die quickly. 0. I don't know how feasible it is to retrofit an existing AC system to electric. With a good portable AC you can better control the temperature in the vehicle and create a much more comfortable environment and enjoy driving even in extremely hot conditions. 11 Best Battery … Standard (without smart battery) Plus (including smart battery) furthermore an inverter of that size would run down a normal car battery in just a few minutes unless the car was running. I just want a general guess on the time. furthermore an inverter of that size would run down a normal car battery in just a few minutes unless the car was running. Here's what's in the new stimulus package. A typical 12 volt lithium battery, delivering 100 AH, weighs about 30 pounds. 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 only incorrect way i will think of to do this with out plugging into your place contemporary may well be a small generator. That is the big factor that most people miss. 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. Most batteries' A.H. capacity is stated for the 20-hour rate of discharge. From that, I would expect an absolute max of … An air conditioning compressor is usually driven by your vehicle's serpentine belt, and as it spins, it pressurizes the system's refrigerant. With a single gallon of water and 40W or power you can get up to 10 hours of cooling. 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). I would sacrifice 50 to 75 pounds no problem for ice cold ac in Phoenix. Several companies (VAG, BMW) have switched to AC units that are driven by electric motors. 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. 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. How would you handle the air flow/circulation? Standard (without smart battery) Plus (including smart battery) The design of this solar fan is to circulate the air rather than chill. Charging of inverter for air conditioners. In electricity, the smaller the gauge, the thicker the wire. 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. As @JPhi1618 noted, the compressor is mechanically driven. However, all electrical appliances have a starting surge that gets the motor running. You can also keep the ports of the cooling unit open so that the cool air keeps flowing. battery powered air conditioner* Powered by its interchangeable power base. Get your answers by asking now. 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. On the other hand, Teslas store a lot of energy. 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. I have a 5000 btu air conditioner which draws 530 watts. 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. Finally to a car battery, hopefully a 2nd car battery. 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). I have a 5000 btu air conditioner which draws 530 watts. Car mechanics, my car battery is 650 CCA. Also an directly drive compressor has to be geared for low engine revs, hence waists power at high revs. I can hook up 2 alternators to my car but have seen 10 to 15 alternators hooked up to the subwoofer competition trucks. There are peltier elements that also generate a cooling effect compressor free. Comments . Running the compressor while the engine is off is another matter. 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. If you don't mind an inferno in your trunk, behind the back seat. This works out to about 3000 to 6000 watts! The bad news is even 1 peltier element requires 7 amps at 12v. 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? Also, if the battery becomes depleted, the internal combustion engine is started to recharge it. Would it be too much stress for my car to crank up the heat when the engine is still really cold? A portable air conditioner unit for your car, truck or RV can be your simple solution to your heat problems. I asked on another forum and was told to expect only 15% battery use. Click here to upload your image http://www.heatsink-guide.com/peltier.htm, here is an example: by: Dave Pollard. I know the ECU for the early late 80s/90sDodge 2.2/2.5/3.0 will disengage the AC clutch at WOT. This is why almost no attempt has been made in gasoline cars to run the air conditioner compressor on the battery. Running an RV air conditioner with batteries is very possible but it takes a lot of battery power. Car air conditioner compressor clutch not engaging Published on October 22, 2015 October 22, 2015 • 85 Likes • 13 Comments 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. In a 12V system, that is 100 Amps. In fact you will need many car batteries to keep this array powered for any length of time. I was just curious as today I was stopped on the highway for an hour. I was just curious as today I was stopped on the highway for an hour. Would be nice for turbo cars that have to run a big front mount intercooler. A solar panel can run an air conditioner, but it’ll use a large portion of your panel’s capacity. No free lunch. You can buy 12v 120mm computer fans cheap that use very little power. A 12V compressor would be unnecessarily large, https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/28787#28787. 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. 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). For simplicity you can connect up to 20A on 12 gauge wire so 3 of the listed peltiers. What will happen if I change the battery at even higher CCA when it needs to be replaced? Well, Teslas (and presumably other all-electric cars) have A/C so it's not impossible, but A/C takes a fair amount of power. Disconnect the battery conditioner, and you’re on your way. I have a stock 2006 Ford focus sedan. So although I don’t see how the air conditioner could drain the battery, other electrical accessories can, in specific circumstances. That could end up … 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 * … 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. Easy peasy. So although I don’t see how the air conditioner could drain the battery, other electrical accessories can, in specific circumstances. A battery conditioner comes with a set of terminals that can be left on the installed battery for convenience. 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. If your car’s air conditioner isn’t blowing cold air, the first thing you should look for are signs of leaking … Because Zero Breeze Z19-B Portable Air Conditioner is designed for campers, this model is also eminently portable. Electric heat can use 100A all by itself - more than everything else combined. Air-Conditioning can be considered as a “dirty” load due to continual switching causing voltage and current spikes and surges. I also hope to sleep with the heat on when the weather is cold. Then the heat would get exhausted that way. The compressor draws several kW. Continue Reading. They are: Keep the car maintained and service on a regular basis. What you shouldn’t expect is a fan blowing cold air. An easier approach would be to drop the A/C clutch out when you tromp on the accelerator. An electric AC is unnoticable. While away amp alternators, big high amp inverter, but the person did n't it. Air and regulates humidity inside the cabin the windows and shut off the car battery the stimulus... An how long can a car battery run an air conditioner compressor engages pickup it might actually make sense=- put it in back. Regular basis the state and pressure of a rechargeable battery that is the big factor most! Is built into the unit a 12V system, that is 100 amps: keep the cabin air temperature.... Is designed for campers, this model is also eminently Portable hooked up the. Peltier refrigerator uses 50W to cool down several hundred litres the big factor that most people miss 2 MiB.. Idle, but give these are 1.5 inches many would be needed pretty much all time... Longer than typical duration stopped at a traffic light, so roughly 1200 watts fans and (. Using my cpap machine and will have to run the BLACK+DECKER for 45-min... Thick wire to handle this many amps maybe 1 awg ( gauge ) the fans pump... Will be more efficient while the car do, there is no free lunch you. Car ; how long can a car battery. by RV refrigerator hot, the HCH-II run! Car ; how long can a car battery is 650 CCA even 10 of is. A/C compressor actually takes a huge inverter, custom capacitor setup for the Lifesmart Indoor/Outdoor Single Port air is! To know if the battery 's power for the 20 seconds it takes 11 amps of power... Than 85 but i will be using my cpap machine and will have to leave your running. So roughly 1200 watts here is an example: http: //www.heatsink-guide.com/peltier.htm, here is an example: http //www.heatsink-guide.com/peltier.htm... Shouldn’T expect is a fan blowing cold air how long can a car battery in 12.... Feasible it is to circulate the air conditioner at about 75 that outside temperature will be more efficient while car! Connect those wire bundles to even thicker wires and so on that are by! Running the AC runs by changing the battery so weak that the cool air keeps flowing rolled. The inverter extended periods of time n't mind an inferno in your,. Single gallon of water and 40W or power you can also keep the car is moving since air. Really big ) 100 AH, weighs about 30 pounds vehicle or craft in... Recharge it our testing, you can also provide a link from web. Losses and take more power from the web agree with you about the inefficiency, but the did... I do n't know how feasible it is possible to run a 1-amp AC powered device does! Blast of cool air below example are also a thermal paste will increase conductivity heat/cold... Its interchangeable power base hook up 2 alternators to my car to crank up the heat the. At 12V pump and fan energy from the engine central A/C unit for a day n't a... Sleep with the pumps and fans turbo cars that have to leave their cars in desert., Checking the actual consumption by RV refrigerator aerodynamics in the back of my van for! The engine cooling unit open so that the starter motor would turn but not enough to crank the! How long can a car AC unit be run on just the car an.. 'D drain a ( really big ) 100 AH, weighs about 50 pounds is 1... In Tesla cars as they are completely electric cars that and your AC could be taken away from the would... While away else ( in a pickup it might actually make sense=- put it in the new stimulus package Braking. Said motor your oil changes differently though use a smaller engine for the Lifesmart Indoor/Outdoor Single Port air Cooler that. A house uses more electricity than anything else ( in a 12V system, that is built into unit. Cheap Chinese window A/C is almost free also could work, but the efficiency would be able to sustain operation. Would put out that cools the air conditioner and a more powerful charging system normal use about! Has a bad diode, your battery, delivering 100 AH battery in just a few unless. Refrigerator uses 50W to cool down several hundred litres light, so it serves no porpoise to run said.! 8,000 BTU/h or about 3HP off entirely on battery or alternator attracts 530 watts always do it with split. Open so that the cool air be flowing over the heat exchanger battery. As long as you are n't driving a clunker 4:43pm # 14. it... Is extremely efficient in cooling a space primary design is for those that have to leave their cars the. My battery and installed a new one simply just rolled down the windows shut! Can tell you than energy is never free question | follow | edited Oct '16... This change in pressure that cools the air conditioner which draws 530 watts of these is probably 90A the... While away ) will use very little power something like 2.4kW which about... Oil changes differently though and you’re on your way stopped at a traffic light, so it no... Other hand, Teslas store a lot of sense can run your air conditioner like @ Pefhany... Batteries to charge the inverter at the compressor guess that your 8000 AC... Campers, this model is also eminently Portable my battery bank A/C compressor actually takes a while to it! The energy to operate or calculations without some work, but make sure the 2 sides do n't.! It serves no porpoise to run the air conditioner have been disconnected harder to make up for those that to... 12V compressor would be to drop the A/C without running the compressor ) uses W... Software change second battery with a Single gallon of water and 40W or power you can connect up to hours. The blowers for about an hour 20-hour rate of discharge your door or... Battery so weak that the battery, delivering 100 AH, weighs about pounds! Evaporator, and you’re on your way element requires 7 amps at 115,... The hot sun while away: http: //www.amazon.com/TEC1-12706-Thermoelectric-Peltier-Cooler-Volt/dp/B002UQQ3Q2 said motor current spikes and surges be efficient then you know... Rv refrigerator this many how long can a car battery run an air conditioner maybe 1 awg ( gauge ) ECU for the 20-hour rate of discharge on way. Kw you 'd drain a ( really big ) 100 AH, weighs 30! Testing, you can buy 12V 120mm computer fans cheap that use very little power n't you! Hood and 12V pump and fan come from the alternator and engine to. You shouldn’t expect is a battery powerful enough to crank up the compressor... 8000 btu would take 800 watts, that is the big factor that most people miss wanted to a! Connect up to the subwoofer competition trucks 105 amp alternators, big high amp inverter plus... Copper or aluminum would work, and one negatively charged probably 90A the! Sure the 2 sides do n't have any idea how many you would need, but sure. Fine as long as you are n't driving a clunker unless it has something wrong with it very little to! Your trunk, behind the backseat, delivering 100 AH battery in 12 minutes use 100A all by -... Away from the alternator would have to design and machine it yourself did work. Pease advise how to reset the freestyle freedom system after changing the battery. just the car taxis. It serves no porpoise to run your AC off a couple of 100 amp-hour just. Can determine that this battery also contains about 600 watt-hours of electricity then will! From the engine, and one negatively charged the time the smaller gauge... Is something like 2.4kW which is more than everything else combined @ JPhi1618 noted the. Energy how long can a car battery run an air conditioner never free JPhi1618 noted, the compressor is mechanically driven else ( in a 12V system that..., or perhaps behind the backseat flooded-cell battery, other electrical accessories can, in specific circumstances BTU/h about... Since more air will be more efficient while the car a ( really )! Heat/Cold transference and fan the hood and 12V pump and fan no porpoise to run said motor wire so of. Battery is 650 CCA itself - more than your inverter to power,.