The Amp hour rating can be useful to know when purchasing new batteries that are rated on Amp hours. Since 1 AH is equal to 1,000 mAH (milli-Ampere-Hours), the capacity is 2.5AH. Power Consumption (Annual) = Power Usage (Watts) x Time (Hours) x 365 (Days) Example: A 1700 Watts Electric kettle runs for 1 hours daily. To calculate the kWh for a specific appliance, multiply the power rating (watts) of the appliance by the amount of time (hrs) you use the appliance and divide by 1000. Example: 100W 8h = 800 Wh. Watts to Heat Calculator . May 07, 2018, 3 Ways for Persons with Disabilities to earn an Income at Home. Top 5 Best Solar Deck Lights: Review & Comparison. Watt hours (Wh) = Milliamp hours (mAh) Volts (V) 1000. The average daily use for a US household is around 900 watts or 90kWh. According to the label, it uses 1200 watts (W). Note: Most TVs consume a little power when turned off as well, so you could also repeat this test with the TV off to see how much power it uses then. 60 watts / 1000 = .06 kilowatts. You won't see the words "watt hours" on your power bill. Let's say you use an electricity usage monitor to track the power consumption of your TV when it's turned on. As a point of reference, the average refrigerator uses 500 kWh per year or 50kWh per month and 5000 kWh would be equal to five hundred thousand watt-hours. All Rights Reserved. Boosted Stealth, Wowgo AT2, Ownboard M1, Wowgo 2s, LingYi belt driven longboard. Five hundred thousand watt-hours would be equal to 50,000 kWh or fifty times the amount of electricity usage for a typical refrigerator over an entire year. A Megawatt equals one million watts. To convert watts to kilowatt hours (W to kWh), first convert watts to kilowatts by dividing watts by 1000. We can use this equation to create a simple calculator that converts watts to kWh: Use the watts to heat calculator to know the power you need to heat a particular substance. Accuracy . For example, if you have 100 W for a duration of 2 hours, then the wattage is (100)* (2) = (200) Watts. Let's say you have a 12V 50Ah car battery. Putting batteries in series increases the voltage while more in parallel increases the amount of power you can pull from the battery (amps). The power P in kilowatts (kW) is equal to the current I in amps (A), times the voltage V in volts (V) divided by 1000:. Hence, the final version of the battery capacity formula looks like this: E = V Q, where: E - Energy stored in a battery, expressed in watt-hours; V - Voltage of the battery; and Q - Battery capacity, measured in amp-hours. Here is a nifty amp-hour calculator that converts watt-hours to amp-hours. See how much electricity the appliance used. Set up your monitor, if needed. The formula for calculating watt-hours is Watts x Hours = Wh. Formula: watt hours = watts hours Abbreviated: Wh = W hrs Example Let's say you have a fan that consumes 100 watts when on. Most of the time the Amp and the hour have already been multiplied so the equation is just Volts times Amp hour equals Watt hour. For individual batteries enter the Volts rating of the battery and the Watt hours rating of the battery and click on the calculate button to . Electric charge in milliamp-hours (mAh) to energy in Watt-hours (Wh) calculator. It runs for 24 hours a day. You may have been wondering what it is and how to calculate them? AC single phase amps to kilowatts calculation. To work out the amp hours, you simply need to divide the watt-hours by the voltage. The calculator will calculate the battery life if the Watt Hour and the battery voltage is known. The 12s3p has 12 cells in series and then 3 sets in parallel for a total of 36 cells (12 x 3). The number will be listed in watts (W) or amps (A). To calculate the Wh of an ebike battery pack, we simply multiply its V and Ah to get the Wh. So 100 W is 0.1 kW, 60 W is 0.06 kW, and 1500 W is 1.5 kW. Estimate watt hours from appliance specifications, Get actual watt hours with an electricity usage monitor. 10s2p 3.0Ah (Samsung 30Q cells)10 series * 3.6v = 36v3.0Ah * 2 parallel = 6Ah36v * 6.0Ah = 216Wh, 12s3p 3.0Ah (Sony VTC6)12 series * 3.6v = 43.2v3.0Ah * 3 parallel = 9Ah43.2v * 9.0Ah = 388.8Wh, Other resources:https://dkwan.com/how-to-convert-to-watt-hours/https://dkwan.com/how-to-estimate-range/. 6 min 60 = 0.1 hrs. The amp hour per cell is based on the 18650 model that the pack uses (a common one is the Samsung 30Q). Here's how to calculate its watt hours: So, in this example, your car battery has a capacity of 600 watt hours. You can also check the battery amps hours chart for 12V and 24V batteries here. In the above example, the battery is 10.8V, while the capacity is 2,500 mAH. Firstly, the options are much more limited for a disabled person compared to an able-bodied individual. You decide how long to wait. One Watt Hour equals one watt of average power flow over an hour. On a battery, Watt Hours (Wh) are used to measure its capacity. We're hiring! For the watt-hour to amp-hour conversion, you also need voltage (V). The label should also list the voltage, which is usually 120 volts in the US and Canada. Best Solar Shed Light: Which Solar Lights To Use for Your Shed? Kilowatt-hours (kWh) = Watts Times (Hours) / 1000. Annual power usage in kWh = 620500 Wh /1000 = 620.5 kWh / year. The formula is (W)* (h) = (Wh). To convert watts to watt hours, multiply watts times hours. If you want to know how many kWh an appliance uses, and already know how many watts it uses, the calculation is pretty straightforward. We can figure this out by calculating the battery's watt-hour (Wh) rating. The battery will last 2 hours. I used an electricity monitor called Kill A Watt, into which I plugged my electric kettle. For appliances like fridges and dryers, you may have to pull them out to find it. Convert minutes to hours if necessary by dividing minutes by 60. To view the purposes they believe they have legitimate interest for, or to object to this data processing use the vendor list link below. If that same lightbulb runs for 2 hours, it uses 20 watt hours (20 Wh) of electricity. Energy efficiency . The first question most people ask themselves when they start looking into solar power is: How many solar panels do I need? There are 3600 seconds in an hour, so you would need to divide the watts by 60. A Watt Hour (Wh) is a unit of measurement for power over time (an hour). Thus I estimate its daily energy usage to be 120 watt hours. Heres how to calculate how many kilowatt hours it consumes in a day: So, in this example, your fridge consumes 12 kWh of electricity per day. Agree to the our terms and policy agreement. Share via. So divide the mAh rating by 1000. Since 1 AH is equal to 1,000 mAH (milli-Ampere-Hours), the capacity is 2.5AH. Convert kilowatt hours (kWh) to watt hours (Wh) if necessary. For example, a 10 watt LED lightbulb that runs for 1 hour uses 10 watt hours (10 Wh) of electricity. You do that by multiplying amps times volts (W = A V). How to Convert Milliamp Hours to Watt Hours (mAh to Wh) 1 amp hour is equal to 1000 milliamp hours. Now calculate as 4.4Ah x 11.1 volts = 48.8 Wh. To estimate my kettle's energy usage, I'd do the following calculation: 1200 W 0.1 hrs = 120 Wh. For my blender, the label says its voltage is 120 volts. So if a 5 Volt battery has 20 Watt Hour rating, and, it draws 2 Amp current, then the Watt delivered by Battery = 10 Watts ( 5 Volts x 2 Ampere). Here's how to calculate its total energy consumption in watt hours: 50 W 3 hrs = 150 Wh Here's the formula for converting watts to watt hours: Calculating watt hours tells you how much electricity your devices and appliances use. Here is the formula The best place to look would be on the battery itself. Manage SettingsContinue with Recommended Cookies. Recall that I estimated my kettle's electricity usage to be 120 Wh per day. In the above example, the battery is 10.8V, while the capacity is 2,500 mAH. Are Portable Solar Panels Effective? So, if you have 100 watts running over four hours that equals 400 WHs (100400). One joule equals approximately the amount of energy it takes a person to lift a quarter pound potato ten inches off the ground, or moving a 40-pound suitcase three feet. . A lot of datasheets will give you a Power Dissipated value Pd in watts.Power calculation formula. Further on, you'll also find a chart of Wh to Ah for 120V and 220V. P (kW) = I (A) V (V) / 1000. One Watt hour equals one watt of average power flow over an hour. . For instance, a 100 W light uses energy at a higher rate than a 60 W bulb; this implies the 100 W light needs a greater "stream" to work. Ross' writing also helps educate others about the benefits of greener living and renewable resources. Enter the electric charge in milliamp-hours (mAh) and voltage in volts (V) and Let's get started! If it doesn't, look up the standard outlet voltage for your country and use that. An ebike battery is measured by its voltage (V) and amp-hour (Ah) rating. Multiply these two numbers to get the watt-hour rating (Ah V = Wh). BTU/h is often abbreviated to just BTU to represent the power of appliances. To convert W to Wh, you need to multiply the number of Watts by the number of hours: Then fill in this box with the duration in hours and click on Calculate. Make sure the appliance's max current in amps is less than the monitor's current limit. Footprint Hero is where Im sharing what I learn as well as the (many) mistakes Im making along the way. For example, if you realize that a couple of your lamps still use incandescent lightbulbs, you can replace them with LED lightbulbs which use at least 75% less energy. September 22, 2022, Top 10 Lightest Weight Electric Wheelchairs in the USA As a point of reference, the average refrigerator uses 500 kWh per year or 50kWh per month and 5000 kWh would be equal to five hundred thousand watt-hours. press the Calculate button: The energy E(Wh) in watt-hours is equal to the electric charge Q(mAh) in milliamp-hours times the August 26, 2022, Pros and Cons of Travelling With the Lightest Electric Wheelchair We and our partners use cookies to Store and/or access information on a device.We and our partners use data for Personalised ads and content, ad and content measurement, audience insights and product development.An example of data being processed may be a unique identifier stored in a cookie. Calculating voltage first, we take 3.6v (standard cell voltage for fast discharge) and multiply that by the number of cells in series. spare batteries for your Ultra-Litemobilitychair, Top 10 Lightest Weight Electric Wheelchairs in the USA, Pros and Cons of Travelling With the Lightest Electric Wheelchair, The Rise of Lithium Battery-Powered Motorized Chairs, Making Sense of Airline Regulations regarding Lithium Batteries, How to calculate Battery Watt-Hour (WH) Rating. The consent submitted will only be used for data processing originating from this website. Hi, I'm Alex. May 12, 2018, How to calculate Battery Watt-Hour (WH) Rating Voltage is denominated in Volts (V), while capacity is denoted in Ampere-Hours (AH). More information can be found here. So I'd do the following calculation: 12 A 120 V = 1440 W. Turns out it uses 1440 watts. The fan's daily watt-hours equal (250 watts) x (5 hours / day) = 1250 watt-hours per day. Easy to use . 4.2 4.2 . The formula for calculating watt-hours is Watts x Hours = Wh. If youre considering solar power as a way to generate clean, renewable energy for your home, its important that you understand the basics of how much electricity will be generated by the panels and what size of system is needed. 3.9 3.9 . A kilowatt equals one thousand watts and its used as the measurement unit in power plants all around the world. By comparing the watt-hours of different packs, we can easily tell which one will provide more range. 10s2p is the same as 2p10s, just different ways of writing it. Note: The label is usually on the back or bottom of the appliance. About | Generally, Lithium-ion battery has the Watt-hour rating mentioned on the battery itself. Calculate the energy consumption in Wh and kWh in one year. FANS AND COOLERS TABLE FAN - 50 W CEILING FAN - 75 W ROOM COOLER - 250 W TOTAL FANS AND COOLERS 2. Follow the instructions in the product manual. P d = V CE X Ic The product V CE X Ic must not exceed the maximum power dissipation rating, P d (max), of the transistor. Ross Spark is a passionate advocate for the future of sustainable energy. To do that, you divide the number of watts by 1,000. Locate the energy usage total on your monitor, which will be displayed in watt hours (Wh) or kilowatt hours (kWh). So, youve seen the term Watt Hour pop up a lot lately. 4.0 4.0 . The cost to run a 1500-watt heater per hour is $0.1563, which equals $3.7512 per day and $113 per month for a 24h usage. But what exactly is WH, and where do you get this information? Watt is a unit of measure for power while Watt-hour (Wh) measures energy. Watt meter power consumption analyzer can calculate the power expenses of the measured appliance automatically. RapidTables.com | 1 BTU = 0.2931 watt-hours 1 BTU = 0.0002931 kWh 1 kWh 3412 BTU BTU/h, BTU per hour, is a unit of power that represents the energy transfer rate of BTU per hour. Learn the Truth | 2022, How Many Solar Panels Do I Need? Let's run through the final steps using my kettle as an example. It is 4400/1000= 4.4ah. They can also tell you how much energy a battery stores. You may have been wondering what it is and how to calculate them? Example: 800Wh / 12V = 66.67 Ah. A 100ah battery is equal to 12.50 kWh or 250 Wh which means it has enough power for an average laptop charger, Goal Zero Yeti 1000 Lithium, and Sherpa 50 all to run at maximum capacity simultaneously before needing recharged again. Copyright 2022 Footprint Hero LLC. Customer ratings by feature . One evening you watch 2 hours of TV, and afterward the monitor shows a total of 196 watt hours consumed. For instance, I estimate that use my electric kettle 6 minutes per day. This answer assumes an average electricity cost of 10.42 cents per kWh. For my electric kettle, it already lists its power consumption in watts, so I don't need to do any conversions. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page. As an Amazon Associate I earn from qualifying purchases. So, youve seen the term Watt Hour pop up a lot lately. In reality it's only 80 Wh -- 33% less than my estimate. For example, if you have 100 watts of light flowing in four hours then that means your bulb has used 400 watt hours or WHs worth of energy. 3.2V 20A Low Temp LiFePO4 Battery Cell -40 3C discharge capacity70% Charging . If not, go through this example: A 4400 mAh battery with ll.1volt means divide the rating mAh by 1000. When calculating . Easy Calculation. For example, if you have 100 watts of light flowing in four hours then that means your bulb has used 400 Watt Hours (WH) worth of energy. Example: Calculating Your Electricity Costs. Amp Hour to Watt Hour Conversion Calculator This calculator converts a battery or battery packs Watt hours (Wh) rating into its Amp Hours rating. For example, let's say you have a 50-watt fan, and you leave it on for 3 hours one night. Need to convert the other way? Embed. The energy E(Wh) in watt-hours is equal to the electric charge Q(mAh) in milliamp-hours times the voltage V(V) in volts (V) divided by 1000: E(Wh) = Q(mAh) V(V) / 1000 So watt-hours is equal to milliamp-hours times volts divided by 1000: watt-hours = milliamp-hours volts / 1000 or Wh = mAh V / 1000 Wh to mAh calculator See also Newer Post , 3 Ways for Persons with Disabilities to earn an Income at Home Watt hours tell you how much energy an appliance uses. Formula: watt hours = watts hours Abbreviated: Wh = W hrs Example For example, let's say you have a 50-watt fan, and you leave it on for 3 hours one night. The way to calculate this is to use the voltage of the battery, and multiply it by the capacity. No, a watt is the unit of measurement for power that equals one joule per second. Amp-hours = Watt-hours / Volts. Estimate how many hours per day you use the appliance. Get the latest solar news from The Solar Advantage about solar tax credits, solar tax incentives, solar DIY, off-grid solar, free home solar designs and more. With his expertise in green energy, he has been able to help people save money and live more sustainably through solar power. Anywhere between 1% and 3%. Generating an income is usually difficult for people with disabilities. As a point of reference, the average refrigerator uses 500 kWh per year or 50kWh per month and 5000 kWh would be equal to five hundred thousand watt-hours. Get $10 your next order when you subscribe! What Is a Watt Hour? For example, if you have 100 watts running over four hours that equals 400 Wh or 400 Joules in one hour. The formula for calculating watt-hours is Watts x Hours = Wh. Therefore, the WH rating on this battery is 10.8 V x 2.5 AH = 27 WH. The number of cells in series/parallel is captured in a format like this: 10s2p or 2p10s. (Just like how 1 meter is 1000 millimeters.) To estimate the range on a board, you first need to know how much power the battery can store. The way to calculate this is to use the voltage of the battery, and multiply it by the capacity. We take pride in being your go-to source for expert solar advice. Step 1: Find the lightbulb's kilowattage. He loves saving money anywhere he can, as well as helping people do the same. Instead, your energy consumption will be listed in kilowatt hours (kWh). This applies to lithium metal batteries (disposable) and lithium ion batteries (rechargeable). Its also worth noting that power usage for household items such as TVs and microwaves vary significantly from things like laptops or cell phones which typically use less than 50 watts. To calculate its daily energy usage in watt hours, you multiply 100 watts times 4 hours: 100 W 4 hrs = 400 Wh In this scenario, your fan consumes 400 watt hours per day. Formula: kilowatt hours = watts 1000 hours, Calculator: Watts to Kilowatt Hours Calculator. For example, the Bluetti AC200 max has 2,048Wh, and a voltage of 51.2 V. You can use the numbers printed on a battery to calculate a number for its capacity in Wh if its not already there. How To Clean Solar Lights & Solar Panels? Step 2: Determine your hours of use per month. 1 kilowatt hour is equal to 1000 watt hours, like how 1 kilometer is equal to 1000 meters. June 13, 2018, Making Sense of Airline Regulations regarding Lithium Batteries Esk8 batteries are almost always comprised of smaller cells (usually 18650 or 21700) in different configurations. According to the label, the blender uses 12 amps (A). To convert watts to watt hours, multiply watts times hours. Also, if you want to power stuff with a battery or solar generator -- such as when going camping -- totaling up how many watt hours all your devices use is an important part in figuring out how big of a battery to buy. Im a DIY solar power enthusiast on a journey to learn how to solar power anything. Next we need to figure out the amp-hours (Ah) for our pack. If you Google the cell name with "amp hour rating" you'll find the right value. Then multiply kilowatts times hours. Enter the power in watts, consumption time period in hours and press the Calculate button: kWh to watts calculator Watts to kWh calculation The energy E in kilowatt-hours (kWh) is equal to the power P in watts (W), times the time period t in hours (hr) divided by 1000: E(kWh) = P(W) t(hr) / 1000 Watts to kWh calculation See also A typical residential fridge uses 500 kWh per year which translates into 50kWh per month. Some of our partners may process your data as a part of their legitimate business interest without asking for consent. Auto Cost Calculator . And here are the specifications for a blender I own. Note: If the capacity of your battery is expressed in milliampere hours (mAh)like in the image above you will need to divide by 1,000 to calculate the ampere-hours (Ah) before multiplying. Refrigerators only draw power about of the time, or about 8 hours a day if you never unplug them. Here's how to calculate its total energy consumption in watt hours: So the fan's total energy consumption that night was 150 watt hours. Recently, many of these companies have been putting, https://dkwan.com/how-to-convert-to-watt-hours/. But this formula is a bit complicated, and there is an easier way to work out the Ah of your battery. A Watt Hour (Wh) is equal to the amount of energy it takes over an hour to produce one kilowatt-hour (kWh). Here's how to calculate how many watts your TV uses when on: So, in this example, your TV uses 98 watts when turned on. Yep, fridges use a lot of electricity. First, you need to convert the number of watts into kW. For air conditioning and heating units, make separate calculations for each season. Buy the world'slightest motorizedmobilitychair! This number is the total voltage of the battery pack (putting cells in parallel doesn't change the voltage). IntroductionSo, I finally get introduced to the wonders of downhill longboard full faces after the TSG Pass caught my interest. To convert kWh to Wh, you multiply kWh times 1000. For example, here are the specifications for an electric kettle I own. This is useful information when trying to reduce your electricity usage and lower your monthly power bill. The Amp hour rating can be useful to know when purchasing new batteries that are rated on Amp hours. See also: A watt hour (Wh) is a unit of energy equal to 1 watt (W) of power sustained for 1 hour. Luckily we can calculate this ourselves! I previously thought of full face helmets to be clunky, The sub $500 price group used to be very competitive when Chinese companies like Meepo and Wowgo first came onto the scene. Learn How To Calculate Watt Hours. Solar Output (kWh/Day) = PowerRating \times PeakSunHours \times 0.75 Broadly speaking, here is how much losses are incurred when electricity passes through the following electric circuit elements: Inverter losses. Press Esc to cancel. How to calculate watt-hours To calculate the relationship between charge in amp hours and voltage in volts, the formula should be used: \rm Wh = Ah V Wh = Ah V 1 amp hour is equal to 1000 milliamp hours, so if you want to convert watts to kilowatt-hours you can simply divide the result by 1000: \rm Wh = mAh V / 1000 Wh = mAh V/1000 DC cable losses. For example, an AC marked with a label of 12,000 BTU actually has a power requirement of 12,000 BTU per hour. This can be calculated by multiplying the Ah in each cell * parallel count. voltage V(V) in volts (V) divided by 1000: So watt-hours is equal to milliamp-hours times volts divided by 1000: watt-hours = milliamp-hours volts / 1000, After using my kettle, my monitor recorded 0.08 kWh. That looks like Ah = Wh/V. You can now calculate as - 4.4Ah x 11.1 volts = 48.8Wh example 2: a 12 volt 50 Ah battery - 50 Ah x 12 volts = 600Wh If you need it our Lithium battery watt hour calculator will work out your results for you. The important info about the configuration is how many cells are in series and how many in parallel. Watt itself is defined as Ampere X Voltage. DC amps to kilowatts calculation. Pack Voltage: 36.00 V. Watt Hour Rating: 216.00 Wh. Calculate watt hours by multiplying watts times hours (Wh = W hrs). The battery's nominal voltage (V); and its capacity in ampere-hours (Ah). Once you know which appliances are using the most energy, you can choose to use them less often or replace them with energy efficient alternatives. For information on how this calculator works see How to calculate the Watt Hours (Wh) of a lithium battery. The calculated Ah is the minimum amp hours your battery should have to power your device for that time period. . Putting batteries in series increases the voltage while more in . Terms of Use | So we calculate the power capacity as Volts times Amps times hours equals capacity in Watt-Hours. So, if you have 100 watts running over four hours that equals 400 WHs (100400). Buy anattendant-controlledmobilitychair, Buyspare batteries for your Ultra-Litemobilitychair, Older Post As an example, a Yeti 1000 Lithium has 1250 watt-hours of energy storage which means it can power devices at the maximum 100 watts for 12.50 hours. This means that the average family of four will consume 36,000 watt hours per month which equals about 360 kWhs if they have an energy efficient fridge and dishwasher like our Yeti 1250 and Sherpa 50 models respectively. Just input the quantity against the appliances you use to calculate the watt consumption per hour by your appliances. Watt-hours = watts * hours / efficiency = 1250 / 0.85 = 1470 watt-hours Since watts = amps * volts divide the watt hours by the voltage of the battery to get amp-hours of battery storage Amp-hours (at 12 volts) = watt-hours / 12 volts = 1470 / 12 = 122.5 amp-hours. Easy to read . So I did the following: 0.08 kWh 1000 = 80 Wh. 400 Wh is equal to 400 Joules in one hour. That said, the Yeti 1000 is a larger battery so it can power more devices than a smaller capacity battery like the Goal Zero Sherpa 100 which has a storage of 200 watt-hours and only enough energy to run an average laptop charger at maximum 20 watts or charge your phone roughly three times before needing to be recharged. In this blog post we will talk about what a Watt hour is, and how to calculate them. The power P in kilowatts (kW) is equal to the power factor PF times the phase current I in amps (A), times the RMS voltage V in volts (V) divided by 1000: To do this, you have to divide watt-hours by voltage (12V for batteries). If your appliance lists its energy usage in amps, convert amps to watts. Subscribe to our newsletter to get health tips and special offers. If you're a frequent traveller, you may be aware of that whether or not a lithium battery can be brought on board depends on its Watt-Hour (WH) rating. Annual power usage in Wh = 1700W x 1 Hours x 365 days= 620500 Wh / year. Type above and press Enter to search. Plug in Watt Hour Meter Electricity Energy Usage Monitor . Anywhere between 5% and 10%. We also have to divide the total by 1000 since 1 kilowatt (1 kW) is equal to 1000 watts (1000 W). Sometimes, the WH rating is stated quite clearly, like in the picture above. Voltage is denominated in Volts (V), while capacity is denoted in Ampere-Hours (AH). Wait as the monitor records the appliance's electricity usage. E = V I T Hopefully, you remember that amp hours are a measure of electric charge Q (the battery capacity). How many watts is a kilowatt hour. Based on the 754 watt figure, BTUs/hr = (754 watts * 3600) / 1054 = 2577 BTUs per hour, per server. See the examples below for calculating and make use of the calculator that we've included at the top of the post. If your lithium battery does not include a watt hour (Wh) rating on the casing you can calculate it by using the voltage and mAh or Ah capacity. It means you must first get the Ah rating. How Much Solar Power Do I Need for My RV? When talking about devices and appliances, using watt hours is a way of conveying how much electricity they use. Here's how: Plug the monitor into the wall, then plug your appliance into the monitor. Esk8 batteries are almost always comprised of smaller cells (usually 18650 or 21700) in different configurations. (Watthours is a measure of energy and watts is a . Manage Cookies. It's easy to do! To calculate watt hours of a battery, multiply amp hours times volts. For my kettle, I only use it once a day in the morning, so I decided to check it once I was done making my morning coffee. If 100 watt light bulb is on for four hours that equals 400 Wh or 400 Watts over time. I'll cover two ways to find out how many watt hours an appliance uses: Look at the appliance label or product manual for its claimed energy usage. The important info about the configuration is how many cells are in series and how many in parallel. When you have the Wh, you have to convert Wh to Ah. A battery rated at 36 V and 10.4 Ah will have a 417.6 Wh capacity (36 x 10.4 = 374.4), like on the Eunorau UHVO All-Terrain Ebike. In this blog post, we will talk about what a Watt hour is, and how to calculate them. 1. A Watt Hour (Wh) is a unit of measurement for power over time (an hour). But much of the time, it is not stated. Inverter is the main source of electric output loss. Unfortunately, board manufacturers don't always provide the Wh for their boards on the product page. In like manner, the rate at which your sun-powered energy structure "streams" power into your house is estimated in watts. Using an electricity usage monitor has the benefit of being exact. My kettle actually uses around 80 watt hours per day. This calculator converts a battery or battery packs Watt hours (Wh) rating into its Amp Hours rating. Whether you're going off-grid or just looking to get the most solar bang for your buck, we have you covered with the latest tips and information about the cleanest energy on the planet. Battery Amp-Hour Calculator. Calculator: Amp Hours to Watt Hours Calculator. LAPTOPS AND COMPUTERS LAPTOP - 100 W DESKTOP - 200 W LASER PRINTER SMALL - 200 W You can use it to -- you guessed it -- measure how much electricity an appliance uses. So the 10s2p has 10 cells in series and then two of those in parallel for a total of 20 cells (10 x 2). The number before the "s" is the number of cells in series while the one by the "p" is number in parallel. July 21, 2022, The Rise of Lithium Battery-Powered Motorized Chairs Kilowatt-hours are calculated by multiplying watts by hours of use. So, if you have 100 watts running over four hours that equals 400 WHs (100400). ---------------------------------------------------------------. So, to convert milliamp hours to watt hours, you multiply millamp hours by volts and then divide by 1000. Use our interactive calculator to easily convert watts to watt hours (W to Wh): Or would you instead like to convert watt hours to watts? To convert watt hours to watts, divide watt hours by hours. This article will answer that question and more! One watt equals one joule per second, and one Wh = the amount of time it takes to produce an electrical current equivalent to 1000 watts. For example: 100 Watts running over four hours would equate to 400 Watt Hours or Joules in one hour. Privacy Policy | It runs for 4 hours per day. For example: 100 watts running over four hours would be 400 Wh or 400 Joules in one hour. Calculate. [3] 3 Divide the result by 1,000. 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