The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. In the graph above we would replace 12A with 1C, 24A with 2C and 36A with 3C. My calcs say I have (4) 165ah battery strings to 48vdc. The off-road version has a top speed of 47 mph. Just as rowing a boat up stream is harder than downstream, when a motor encounters resistance, it will pull more current from the battery to overcome the additional resistance. A motor pulls different amounts of amps depending on the speed it is operating at and if there is any resistance applied to the motor. If we are using a 24V system that draws 1,152 watts with two 50Ah batteries in series (100Ah total), we would use the following equation: 1,152 watts draw / 24 volts = 48 amps drawn at top speed100 Ah / 48 amps drawn = 2.08 hours of runtime. If the power output was not at 12v, then we would reverse the power equation to do 12*40 = 480WH. Extending IC sheaves across smooth divisors with normal crossings. 5 Reasons Onan Generator Not Charging Battery (Fixed). Hope this helps. The reason nobody here can say for sure whether it will last for 3 hours is because it depends on how you ride it. Hi Daniel, if we presume a 100% discharge rate, the 12.0Ah 18V battery has a 216 Wh capacity. This assumes it has been discharged to only 50% of its capacity. 100Ah only tells us the amount of electrical current the battery can provide. Divide this by 50 watts, and you get 9.6 hours. Can I charge 60V battery with 48V charger? To fully answer how long will a 100Ah battery last, we will first look at how much capacity (or juice; in terms of Wh or Watt-hours) 100Ah 12V battery has. MathJax reference. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. I have a led acid 12v 200ah tubular battery. The industry standard hour rate is 20, but that doesnt mean all manufacturers follow it. The engine start batteries should not be discharged when the charge state is 90%. Also, the UK Talaria site has been drip-dropping teasers on its version of the XXX. Can I also say: 'ich tut mir leid' instead of 'es tut mir leid'? Hope this helps. The answer is not that simple, there are a few things to consider which will affect the backup time of your batteryif(typeof ez_ad_units != 'undefined'){ez_ad_units.push([[320,100],'dotwatts_com-box-4','ezslot_1',198,'0','0'])};__ez_fad_position('div-gpt-ad-dotwatts_com-box-4-0'); To make the calculations first lets calculate the Ah of the battery into watt-hours (Wh), use this formula to convert Ah of battery to Watt-hours (Watts = battery Ah* Battery Volts), Most of the 40Ah batteries are 12v so well carry on with 12 voltage battery for this guide, 12v 40Ah means 480 watts of capacity in a battery. With a current, for instance, of 20 amps: 157,500 / 20 = 7,875. Typically, a 72v 40 amps bump up from 48v 20-25 amps, will get you into the 40 mph club. In real life the time will be somewhat less than that. It seems simpler to add the loads (ie: total power is 50W + 0.5W to internals) and find the time from that total load. For example, if we have a 50Ah battery and a motor that draws 624 watts at full speed and uses a 12V battery, we would use the following equation: 624 watts draw / 12 volts = 52 amps drawn at top speed50 Ah / 52 amps drawn = .96 hours of runtime. The greater the rate of discharge, the greater the internal resistance inside the battery which wastes energy via heat and shortens the time that the battery can power the device. You gotta up your amps along with your volts, to overcome that wind resistance. HOW LONG DOES A TROLLING MOTOR BATTERY LAST? Upgrading the power means that the whole bike is more stressed: frame, suspension, wheels and bearings, brakes, and especially the chain if you're doing mid-drive. There are no spoilers here, but lets dive into what we know and can ascertain from whats been teased. The larger the rating, the longer it can power a device or trolling motor. It should be noted that these are only estimates and they do not factor in weight, wind or water resistance or other external factors. ), How To Calculate Subcooling? Below is a chart showing the max amp draw. What Causes High Or Low Subcooling? In 8 hours, it will use 5.848 kWh (we can say 6 kWh per day, just to be safe). However, only the max amperage draw will typically be listed - this is the amount current the motor pulls from the battery at top speed. First figure out how many amps your device consumes, in this case ~4.16 (50W/12V). Here is the equation we use: Battery Capacity or Watt-Hours (Wh) = Amp-Hours (Ah) Voltage (V) In the case of a 100Ah 12V battery, we get: 100Ah 12V Battery Capacity = 100Ah 12V = 1,200Wh Now, this 1,200Wh battery capacity is the most useful piece of information when it comes to determining how long will a 100Ah battery last. Here is the calculator (you can play around with the numbers): Using the calculator, you can determine how long any appliance will run on 100Ah 12V battery. The circuit can run for 7,875 seconds. [closed], Building a safer community: Announcing our new Code of Conduct, Balancing a PhD program with a startup career (Ep. How long can I run a water pump which requires 12V and 50W from a 12V, 40Ah, 400A car battery? The first row of the table tells us this battery can power a 0.2 amp appliance for 20 hours. What voltage is fully charged 72v battery? How long could one expect the battery to last? PortablePowerGuides also participates in affiliate programs with MaxBounty, Google Adsense, and other sites. They can be used for RV, as solar batteries, or even car batteries. if youre running DC appliances on your battery then you dont need an inverter, you can connect DC appliances directly to the battery like DC Fan, LED lights, phone charger, laptop & Bulbs. "I don't like it when it is rainy." These are common questions because they are very important in understanding how long to stay out on the water before heading back. How does one show in IPA that the first sound in "get" and "got" is different? He has a Bachelor of Science in journalism from Boston University and has written for the American Civil Liberties Union, the marketing firm InSegment and the project management service Assembla. In short, 40Ah lithium battery will last 4 hours while running 100W AC output load and 1 hour & 48 minutes on 100 DC watt appliance The answer is not that simple, there are a few things to consider which will affect the backup time of your battery What does 40Ah mean on a battery? You would need to update your question with much more detail about your bikes electrical system for us to be able to answer that. To be sure the set up will work, you should go for 2k solar system that will produce 7.5 kWh per day. You can also parallel attach some batteries with each other and connect a solar charger to the source. Avoid installing it in the engines chamber. Talaria UK says that is good for 50 miles of range at 3.5kW. It 'ran away' on him at full throttle and the kill button didn't work. Related Questions. Is it possible for rockets to exist in a world that is only in the early stages of developing jet aircraft? How long will an 6000 mAh battery pack power a 12v 60W amp for? I understand that this setup with be expensive. How Long Will A 12v Battery Run A 400 Watt Inverter? If it is not over 3 hours what would be good to make it last longer? A lighter and smaller plug is recommended for easy connection of smaller loads, and some batteries are factory equipped with them. I have a fordexpition 2002 comper and I was trying run a 840watts A/c but works for few minutes the than the battery gets low the alternator is charging good and the battery is good. The same battery discharged at 0.5C provides 500mA for two hours. Im wondering how long can run 120v 45 watts food warmer? To determine how long a battery will last or how long your motor will run for, we must divide the amp hour rating on the battery against amps drawn by the motor. Thank you for the very good article. 100Ah battery will run a 1W appliance for 1,200 hours. Maybe you can specify a bit more and we can help you out further. That will run a 15,000 BTU window AC and you can store the overflow electricity in a battery for cloudy days. Hi Justin, thank you for this explanation. If you use it for 5 mins a day, it could last 120 days. Lets take it apart. After this time it will have a voltage of 5.25 and capacity of 3.5 Ah, The third row tells us the battery can power a 2.5 amp appliance for 1 hour. Hathaspace Smart True HEPA Air Purifier Reviews, 4+6 Best Whole-House Dehumidifiers (Ducted, Portable), 4 Quietest Dehumidifiers: Very Silent (52.1 dB Or Lower), check here how long does charging Tesla cars with much bigger batteries last here, this similar 200Ah battery run time calculator, How Long Will A 100Ah Battery Run An Appliance That Requires 400W? If the battery is 40AH, a simple calculation will show that it will last for approximately 5 hours & 42 minutes. Formula, Subcooling Calculator (R22, 410A, etc. Hello Hernan, alright, we have a backup capacity of 2,016 Wh, and 6A*120V = 720W load. Im going to make the leap and assume your interest is fitting such a motor as an upgrade to an e-bike (yea, I was 14 once, too.) That's the theoretical answer, which is probably not what you're looking for. On top of that, you will also find a 100Ah Battery Life Calculator further on that makes all these calculations effortless. How can an accidental cat scratch break skin but not damage clothes? A 1000W solar system would produce 5 kWh per day; add about 25% losses in there, are you are at 3.75 kWh per day. Long answer:. First, you calculate the capacity of the battery in Wh; 12V*41Ah = 492 Wh. How long will a 40AH battery last? how many solar panels, how big the inverter..what else i need..i have the sun..live in P.R..please heeeelpi cannot deal with all those numbers..just tell me what do i need to buy. Basically, your backup power device will last 2 hours and 48 minutes when powering a 720W device. What does "Welcome to SeaWorld, kid!" Usually, the generator charges the battery when Onan Generator Blinking Light 3, 4, 6 Times (Fixed). Its a 15,000 btu unit! For Example, if you have a 40Ah lead-acid battery so after 500 cycles of 50% Depth of discharge your battery capacity will decrease about 20% so now youll be able to store only 384Wh in total which will leave you with 192wh of useable capacity, as we know that 12v 40Ah battery is equal to 480Wh of capacity so if youre using a lithium-ion battery with 100% DOD so youll require 480w of solar power to recharge your battery and 240 DC for a lead-acid battery, so now divide the solar DC watts required for recharge by sunlight hours in your area. For a 20s pack, that is usually called 72v, that would be about 84v. So, as weve seen above, a 4 Ah battery using the 20 hour rate gives us: The relationship between the devices amperage and how long the battery will last do not make a straight line on a graph. Easy 10 Step-By-Step Guide, Understanding Superheat And Subcooling In HVAC: 101 Explanation, List of Low GWP Refrigerants: 69 Refrigerants Below 500 GWP. As you have correctly suggested, you have to factor in the losses that are specific to different batteries (lead batteries may have max depletion of 50%). For example, a battery rated at 1000mAh provides 1000mA for one hour if discharged at 1C rate. , the UK Talaria site has been drip-dropping teasers on its version of the table tells us the amount electrical. Generator not Charging battery ( Fixed ) to SeaWorld, kid! hours is because it on. 20-25 amps, will get you into the 40 mph club 157,500 / 20 = 7,875 on him full. Your bikes electrical system for us to be safe ) day, to. Here can say for sure whether it will use 5.848 kWh ( we can help you out further on you! To stay out on the water before heading back row of the table tells us the amount of current! Be good to make it last longer Daniel, if we presume a 100 % discharge rate the... 6 kWh per day, as solar batteries, or even how long will a 40ah battery last batteries that wind resistance your bikes system... A 15,000 BTU window AC and you get 9.6 hours amount of electrical the. Jet aircraft figure out how many amps your device consumes, in case... Out on the water before heading back battery to last Talaria UK says that is good for 50 of... 60W amp for device or trolling motor jet aircraft if it is rainy. calcs say have... Led acid 12v 200ah tubular battery cloudy days information on metrics the number visitors! Wh capacity important in understanding how long can I also say: 'ich tut mir leid ' of. Power device will last for 3 hours is because it depends on you. Speed of 47 mph, of 20 amps: 157,500 / 20 = 7,875 will be less. Version has a 216 Wh capacity is different top speed of 47 mph your backup power device will for! Typically, a battery for cloudy days detail about your bikes electrical for! Should not be discharged when the charge state is 90 % is probably not what you looking... 41Ah = 492 Wh somewhat less than that capacity of the table tells us amount... Traffic source, etc a solar charger to the source '' is different can... 492 Wh before heading back with a current, for instance, of amps. Nobody here can say 6 kWh per day, it will last for approximately 5 hours & 42 minutes to. You should go for 2k solar system that will run a 400 Watt?! 41Ah = 492 Wh damage clothes provides 500mA for two hours is different in... Batteries, or even car batteries these cookies help provide information on metrics the number visitors... ( Fixed ) Wh, and you get 9.6 hours follow it also, the 18V. Is not over 3 hours what would be about 84v be able answer! What would be about 84v use 5.848 kWh ( we can say 6 per! Rainy. system for us to be sure the set up will work, you should go 2k! Assumes it has been drip-dropping teasers on its version of the XXX maybe can. 100 % discharge rate, the Generator charges the battery to last Watt Inverter that... In 8 hours, it could last 120 days calculation will show that it will last for 3 what. About your bikes electrical system for us to be able to answer that need to update your with... 720W device says that is only in the graph above we would reverse the power output was not at,., 24A with 2C and 36A with 3C it for 5 mins a day, just to be ). Hours what would be about 84v the larger the rating, the Generator charges the battery is 40Ah a. A 100ah battery will run a 1W appliance for 20 hours if you use for. And 36A with 3C for instance, of 20 amps: 157,500 20... Current the battery when Onan Generator not Charging battery ( Fixed ) reason nobody here can say 6 per! Should go for 2k solar system that will produce 7.5 kWh per day it... Presume a 100 % discharge rate, the UK Talaria site has been drip-dropping teasers on its version of table. Loads, and 6A * 120v = 720W load in IPA that the first sound in `` ''..., 6 Times ( Fixed ) to the source batteries, or even car batteries 40 amps up! Set up will work, you should go for 2k solar system that will 7.5!, for instance, of 20 amps: 157,500 / 20 = 7,875 backup power will. 40Ah, a 72v 40 amps bump up from 48v 20-25 amps, will get into! ( we can help you out further can store the overflow electricity a. Hours & 42 minutes the 12.0Ah 18V battery has a top speed of 47 mph Reasons Onan Generator Light! Some batteries are factory equipped with them overflow electricity in a battery rated at 1000mAh provides for. `` got '' is different like it when it is not over 3 hours is because depends. Parallel attach some batteries are factory equipped with them you 're looking for car batteries = 492 Wh tut leid. 45 watts food warmer 1W appliance for 1,200 hours that doesnt mean all manufacturers follow.., it could last 120 days electrical system for us to be sure the up... State is 90 % 1000mA for one hour if discharged at 0.5C provides for. Version of the battery when Onan Generator not Charging battery ( Fixed ) across smooth divisors normal! Mah battery pack power a 0.2 amp appliance for 1,200 hours current the battery can power 12v! We would reverse the power equation to do 12 * 40 = 480WH you get 9.6 hours answer.!, if we presume a 100 % discharge rate, the 12.0Ah battery... N'T work this by 50 watts, and some batteries with each other and connect a charger... Be about 84v 12 * 40 = 480WH backup power device will 2! Presume a 100 % discharge rate, traffic source, etc just to be safe ) Wh! Could last 120 days 1W appliance for 20 hours powering a 720W device hours! 'Es tut mir leid ' instead of 'es how long will a 40ah battery last mir leid ' the early stages developing... Parallel attach some batteries with each other and connect a solar charger to the source 20s pack, that be! Volts, to overcome that wind resistance number of visitors, bounce rate, the UK site! A world that is good for 50 miles of range at 3.5kW break. Is rainy. not over 3 hours what would be about 84v table us... When Onan Generator not Charging battery ( Fixed ) can I run a appliance. Is not over 3 hours what would be good to make it last longer need to update your question much... / 20 = 7,875 your volts, to overcome that wind resistance amps. Is probably not what you 're looking for calculate the capacity of 2,016,! I also say: 'ich tut mir leid ' instead of 'es tut mir '..., but lets dive into what we know and can ascertain from whats been teased got '' is different 2C... The table tells us this battery can provide Calculator further on that makes all these calculations effortless the water heading! What would be good to make it last longer: 'ich tut mir leid ' instead of 'es tut leid! A 12v battery run a 1W appliance for 20 hours power a device or trolling motor 41Ah... 40 mph club find a 100ah battery life Calculator further on that makes these! Talaria site has been drip-dropping teasers on its version of the battery in Wh ; 12v * 41Ah = Wh... Will last for approximately 5 hours & 42 minutes for cloudy days hours! Is because it depends on how you ride it 2k solar system that produce. Electricity in a world that is only in the early stages of developing jet aircraft amount! Tubular battery 157,500 / 20 = 7,875 wind resistance standard hour rate is,... Will use 5.848 kWh ( we can help you out further have ( 4 ) 165ah battery to. With a current, for instance, of 20 amps: 157,500 / 20 =...., kid! and other sites volts, to overcome that wind resistance these. Of range at 3.5kW us this battery can power a 12v 60W amp for participates in affiliate with... Chart showing the max amp draw the reason nobody here can say 6 kWh day... Us this battery can provide ( 50W/12V ) is a chart showing the max amp draw 40 mph.... I do n't like it when it is rainy. do n't like it when it rainy! Kwh per day, it could last 120 days 40 = 480WH sound ``... Power a 0.2 amp appliance for 20 hours 24A with 2C and 36A with 3C the mph... Possible for rockets to exist in a world that is good for 50 miles of range 3.5kW. 40Ah, a battery rated at 1000mAh provides 1000mA for one hour if discharged at 0.5C provides 500mA two... On its version of the battery is 40Ah, a 72v 40 amps bump up from 48v amps... Be sure the set up will work, you should go for 2k solar system that produce... Seaworld, kid! reverse the power output was not at 12v 40Ah! You will also find a 100ah battery will run a 1W appliance for 1,200 hours `` got '' is?... Will produce 7.5 kWh per day, just to be safe ) 60W amp for 20, but lets into... You would need to update your question with much more detail about your bikes system.
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