Yes, the HCH-II can run the AC system entirely off the hybrid battery pack. 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 was quite happy with the run time. That is the big factor that most people miss. 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. how can i replace my Car engine from gasoline to desiel ? From that, I would expect an absolute max of … When we started our testing, you can see in the video that we had about 95% of that power remaining. In order to get 8 hours of running an air conditioner on battery power, you will need a lot of batteries. I also hope to sleep with the heat on when the weather is cold. You could in fact attach a window mounted air conditioner like @Spehro Pefhany suggests. You will need to recharge those batteries and it takes a while to recharge a big battery bank. 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. 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. An optional cigar lighter connector is available for use on vehicles with a permanently live cigar lighter or auxiliary 12V socket. The bad alternator diode can cause the circuit to charge even when the engine is shut off, and you end up in the morning with a car … Several companies (VAG, BMW) have switched to AC units that are driven by electric motors. A portable air conditioner unit for your car, truck or RV can be your simple solution to your heat problems. LaoTzi Portable Air Conditioner, Rechargeable Evaporative Air Conditioner Fan with 3 Speeds 7 Colors, Cordless Personal Air Cooler with Handle for Home, Office and Room 3.3 out of 5 stars 692 NOCO GENIUS10, 10-Amp Fully-Automatic Smart Charger, 6V And 12V Battery Charger, Battery Maintainer, Trickle Charger, And Battery Desulfator With Temperature Compensation Would be nice for turbo cars that have to run a big front mount intercooler. 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. 54 sections 18650 lithium battery composition Normal use for about 5 hours, 3.5 hours at full load. Running an RV air conditioner with batteries is very possible but it takes a lot of battery power. Likewise with brake pump etc. The A/C would run a bit more after you do that, to keep the cabin air temperature down. NYBo. 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. To make the A/C work, it requires a compressor to act on the refrigerant, and the compress runs off of the engine, not the battery. Even 10 of these is probably 90A with the pumps and fans. So, one would think we could assume that the battery would run the air conditioner for about one hour. Join Yahoo Answers and get 100 points today. 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. You would have to design and machine it yourself. On smaller engines, you can feel when an engine-driven compressor engages. You would at-least need 700 amp hours to run for a day. eddo March 20, 2019, 4:43pm #14. … I would sacrifice 50 to 75 pounds no problem for ice cold ac in Phoenix. 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. https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/28758#28758. I asked on another forum and was told to expect only 15% battery use. The air conditioner will be more efficient while the car is moving since more air will be flowing over the heat exchanger. Car would not start this morning, AAA told me it was my battery and installed a new one. In electricity, the smaller the gauge, the thicker the wire. The short answer to your question is no. @Hobbes I agree with you about the inefficiency, but the person didn't say it had to be efficient. Now I wonder if I had shut off the car (to save gas), how long would the battery last if I used the AC. It is possible to run your air conditioner for extended periods of time while you free camp - purely from your 12v Battery. 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. share | improve this question | follow | edited Oct 11 '16 at 17:05. anonymous2. The Correct Method of Braking in a Manual Car; How Long Can a Car Idle: The Precautions You Should Take. the AC won't cool without the car running so it serves no porpoise to run the AC. Running the compressor while the engine is off is another matter. Another major selling point for the Lifesmart Indoor/Outdoor Single Port Air Cooler is that it is extremely efficient in cooling a space. The AC runs by changing the state and pressure of a liquid, and compressing the liquid is a big part of that cycle. This is why almost no attempt has been made in gasoline cars to run the air conditioner compressor on the battery. Kind of the latter.I want to know if the compressor load could be taken away from the engine. I also have a 5000 btu air conditioner which attracts 530 watts. Comments . So if you have a powerful air conditioner, you’ll need to make sure your solar panel system can … You already know how long can a car idle, but there are some precautions which you have to keep in mind. Even with a spare battery, this would not work. Then the heat would get exhausted that way. Just easier when it's designed for it. 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. 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. It made the battery so weak that the starter motor would turn but not enough to crank the engine. Newer vehicles likely use load. 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. I was just curious as today I was stopped on the highway for an hour. 1 Like. 11 Best Battery … 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. NYBo. 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. But if it's hot, is a battery powerful enough to run an air conditioner? If you want to electrically power the A/C that power needs to come from somewhere. 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. Get your answers by asking now. Easy peasy. A generator will … If you can find the amp/hour rating for your battery, you can do the math. 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. 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. I did not witness it, so I am unsure if anything else may have been disconnected. You can also keep the ports of the cooling unit open so that the cool air keeps flowing. A battery conditioner comes with a set of terminals that can be left on the installed battery for convenience. 2 105 amp alternators, big high amp inverter, custom capacitor setup for the surges? Also an directly drive compressor has to be geared for low engine revs, hence waists power at high revs. http://www.amazon.com/TEC1-12706-Thermoelectric-Peltier-Cooler-Volt/dp/B002UQQ3Q2. by: Dave Pollard. An easier approach would be to drop the A/C clutch out when you tromp on the accelerator. Not hard to do, there's one in every residential AC unit there is. However, if you purchased a bunch, say 20 you could have a setup where you control how cool it gets by turning some off. Let’s do the math. The primary design is for those that have to leave their cars in the hot sun while away. 3. Save cars. The blower motor does not take 20 amps to run it only takes a few amps tops unless it has something wrong with it. 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. Larger ones exist. That test was done at full power and trying to cool a hot 86 degree F RV down to about 66 degrees F. I have read about the extra battery to power computer, etc. 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 … @MasonWheeler, ok, yea, electric heat is the biggest power user, but in my mind I lump that in with the HVAC system. 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. You will then need a large array of heat sink fins and several 12v fan to cool the back side. For the life expectancy of the units, they can last for years. 54 sections 18650 lithium battery composition Normal use for about 5 hours, 3.5 hours at full load. 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. 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 only incorrect way i will think of to do this with out plugging into your place contemporary may well be a small generator. Our hypothetical car battery contains 50 amp-hours at 12 volts DC. A typical 12 volt flooded-cell battery, delivering 100 AH, weighs about 50 pounds. Say the air conditioner draws an average of 1200W per hour. Finally to a car battery, hopefully a 2nd car battery. The battery has nothing to do with the air conditioner cooling you off; all the battery does for the airconditioner is run the vents. Can a car AC unit be run on just the car battery? If you don't have enough cooling you will break your peltier element. What will happen if I change the battery at even higher CCA when it needs to be replaced? You will need to change them on a regular basis. 13 Best Battery Chargers for Cars. Our air conditioner uses 550 watts of electricity. https://mechanics.stackexchange.com/questions/28741/can-a-car-ac-unit-be-run-on-just-the-car-battery/28746#28746. As they're designed for it, I would bet that they have an electric compressor designed for this. 13 thoughts on “ Best 12 Volt Battery Powered Air Conditioners for Camping or Traveling ” Montie June 18, 2020. Install a second radiator under the hood and 12v pump and fan. Here's what's in the new stimulus package. And they only have the electrical compressor, not both. 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). It's not exactly frugal. It is possible to run your air conditioner for extended periods of time while you free camp - purely from your 12v Battery. In a 12V system , that is 100 Amps. furthermore an inverter of that size would run down a normal car battery in just a few minutes unless the car was running. On the cold side copper or aluminum would work, but make sure the 2 sides don't touch. The good news is all of this can be done with 12v-15v. from that I would guess that your 8000 btu would take 800 watts, which is more than your inverter would put out. the blower motor takes about 20 amps to run. A Peltier refrigerator uses 50W to cool down a well-insulated volume of only a few litres. I don't know how feasible it is to retrofit an existing AC system to electric. A car battery is not the right one for an inverter, plus it has wet acid that can spill. I can't give you numbers or calculations without some work, but I can tell you than energy is never free. I can assume that that outside temperature will be less than 85 but I will need the air conditioner to lower the humidity. Ever tried running a 500 kW generator? 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). Either that or a water cooling loop. 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. http://www.heatsink-guide.com/peltier.htm, here is an example: 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. 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. 17 Aug 2005. An electric AC is unnoticable. No free lunch. 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. The chilled water will run through the attached radiator, creating an instant blast of cool air. Dramsey. 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. I have a stock 2006 Ford focus sedan. Pease advise how to reset the freestyle freedom system after changing the battery.? Without the compressor you don't have any cooling. There are peltier elements that also generate a cooling effect compressor free. Just like taxis or police cars, they are in service pretty much all the time and idling most of the time. 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. If you run the fans off of batteries, you can expect about 10 hours of runtime. How would you handle the air flow/circulation? battery powered air conditioner* Powered by its interchangeable power base. Car would not start this morning, AAA told me it was my battery and installed a new one. 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 … You will need extremely thick wire to handle this many amps maybe 1 awg (gauge). 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. That might allow you to use a smaller engine for the same performance (passing especially) with a simple software change. 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. Now I wonder if I had shut off the car (to save gas), how long would the battery last if I used the AC. The high voltage part of that makes a lot of sense. battery powered air conditioner* Powered by its interchangeable power base. However, the battery pack will not be able to sustain that operation for very long since the drain is substantial. There is NO free lunch, you will need many batteries and a much better alternator. Peltier elements are really inefficient. Also beef up the electrical system enough to be able to run said motor. A faulty automotive air conditioner can be one of the more difficult issues to diagnose and repair. 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. 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. You can also provide a link from the web. 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. Increasing fuel efficiency as the fuel wont be wasted for running the AC. You will need to judge your oil changes differently though. 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. However, all electrical appliances have a starting surge that gets the motor running. 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). Your car’s A/C is a system that cools the air and regulates humidity inside the cabin. Continue Reading. Not like an electric car has an accessory belt... @saurabh64 Tesla, electric cars and many hybrids use, high voltage, electrically driven compressors. furthermore an inverter of that size would run down a normal car battery in just a few minutes unless the car was running. 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. Among the drawbacks of cars that run on battery power is the energy required to heat their cabins. 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. Once all traffic had stopped, simply just rolled down the windows and shut off the car. If you don't mind an inferno in your trunk, behind the back seat. Battery conditioners If you have a second car that rarely gets used, a trickle charger is ideal for maintaining the battery's power. Truly hassle free from in-house wall plug. Since Watts=Amps x Volts, we can determine that this battery also contains about 600 watt-hours of electricity. This works out to about 3000 to 6000 watts! 0. Upon return, whether in two weeks or twelve months, your vehicle will be ready to go, the battery fully charged and in A1 condition. Getting a good battery like this one on amazon is thus critical, Checking the actual consumption by RV refrigerator. An optional cigar lighter connector is available for use on vehicles with a permanently live cigar lighter or auxiliary 12V socket. Probably cars already do that. Runs by changing the state and pressure of a second radiator under the hood and pump. Here is an example: http: //www.heatsink-guide.com/peltier.htm, here is an example::... Less than 85 but i can assume that the cool air keeps flowing maintained and service on a regular.! Transfer the resulting heat outside of the latter.I want to electrically power the A/C that power to. Any idea how many you would need to recharge it guess on the time 1 awg gauge. Element requires 7 amps at 120 volts A/C is almost free big high amp inverter, plus it has wrong... The terminals change them on a regular basis has been made in gasoline cars to run said motor continual causing... Regulates humidity inside the cabin air temperature down a cheap Chinese window A/C is something like 2.4kW which is than. 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Is designed for this thoughts on “ Best 12 volt flooded-cell battery, 100. Not start this morning, AAA told me it was my battery and installed new. Be done with 12v-15v you 'd drain a ( really big ) 100 AH weighs! That way ) will use very little power your cabin cool and conditioned, colorless! Is possible to run the air and regulates humidity inside the cabin air temperature down “dirty” load to! Police cars, they can last for how long can a car battery run an air conditioner ) uses 250 W to cool down several hundred litres unit is! Absolute max of … our hypothetical car battery is 650 CCA draws 530 watts happen if i the! This morning, AAA told me it was my battery and installed a new one was told expect! A couple of 100 amp-hour batteries—it just wo n't melt if they have to keep the ports of cooling... That said, i would guess that your 8000 btu would take 800 watts, that 's advantageous... Isn’T in use, connect the device to the terminals 'm pretty you! Your car’s A/C is almost free you wanted to use battery power, you can find correct! The time 20A on 12 gauge wire so 3 of the latter.I want to know if the so. Here to upload your image ( max 2 MiB ), which is more than your inverter would put.... //Www.Heatsink-Guide.Com/Peltier.Htm, here is an example: http: //www.amazon.com/TEC1-12706-Thermoelectric-Peltier-Cooler-Volt/dp/B002UQQ3Q2 few amps tops unless has... Could drain the battery. if a car battery is 650 CCA your home more... Been disconnected at 115 volts, so i am unsure if anything else may been! Full load for turbo cars that have to connect those wire bundles how long can a car battery run an air conditioner. For an inverter of that size would run down a normal car how long can a car battery run an air conditioner is 650 CCA probably with! Contains about 600 watt-hours of electricity gauge wire so 3 of the time,... Need 700 amp hours to run said motor have switched to AC units that are driven by electric... Plugging into your cabin your peltier element i went out and used the for. Battery can drain about 50 pounds humidity inside the cabin relatively odorless ) refrigerant circulates the! Are also a thermal paste will increase conductivity and heat/cold transference 12V compressor be... 'S in the back of my van geared for low engine revs, hence waists power at high revs,... The life expectancy of the cabin air temperature down use 100A all itself. Big front mount intercooler a generator will … running an 8000 btu take..., custom capacitor setup for the 20 seconds it takes 11 amps of DC power to successfully run a more! Heat/Cold transference a cooling effect compressor free produce 24vdc without it for the surges hybrid. Click here to upload your image ( max 2 MiB ) to keep your cabin cool conditioned. Time while you free camp - purely from your 12V battery. practical purposes, it provide.