If the manufacturer only provides Watts drawn by the motor, we can convert this to amps by dividing against the voltage being used. These are common questions because they are very important in understanding how long to stay out on the water before heading back, and are fairly easy to answer if you have all the necessary information. Battery Life: I have a battery and I want to run an (app) application against it. Throw away how long will a battery last calculator, and l et’s see an actual case, 10 Ah battery delivering 1A, would last 10 hours. Both of these factors are explained in detail right below. With this information, just divide the amp hour rating on your battery by the amp draw of your motor. 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. These can all play as variables in how long the battery will last. battery lasts, because less current is being drained from it. You have to be careful if you are using a 12V, 24V or 36V system as this can affect your calculations. Motors draw different amounts of current from the battery depending on the motor size and speed it is turning. This information should be provided by the manufacturer and should be readily available on the product listing or on a specification sheet for the motor. Also note that though that this calculator cannot be used as an exact battery life calculator but more as an estimator. For example, if we have a deep cycle battery that is rated for 50Ah and we are pairing it with a motor that draws 52 Amps at max speed, we would use the following equation: 50 amp hour / 52 amps drawn = .96 hours of runtime. Cold Cranking Amps (CCA) cannot be used to estimate how long a battery will last. This calculator will tell you what battery size you need. This battery life calculator calculates the battery life of a battery in a circuit. To determine a battery last and motor runtime, you will need to know the following information: The amperage draw of the motor and the Amp Hour rating on your battery.

Why is it important to know the C-rate or C-rating of a battery We try to supply the best reference available. Take your average monthly kWh use and enter it here.

It also gives you an idea of how long a device will run from a specific battery. This type of Lithium battery is engineered to provide a long service life (over 10 years) while also being safe, with a stable chemistry and sophisticated electronic protection features.

drawn in the circuit, the total amount of current being used.

Find out how long your laptop battery should actually last using a simple formula. It should be noted that these are only estimates and they do not factor in weight, wind or water resistance or other external factors. 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. The Ah rating is normally marked on the battery. Copyright 2020 Newport Vessels. allow the battery to live longer. The load current is measured in unit milliamperes (mA). This, again, is the total amount of current that a battery can supply The calculator will calculate the battery life if the Watt Hour and the battery voltage is known. also greatly affected by other factors such as temperature, humidity, usage. All rights reserved. of all these equals 2000mA. This page is a quick run-time calculator to help you estimate the run-time based on simple assumptions. Calculating battery life is easy with two pieces of information: the battery amp hour rating, and the amount of amps a motor uses. and displayed, according to the product of the battery capacity and current load, seen in the formula above. If a battery doesn’t have an Ah rating, you can calculate the Ah rating from the Reserve Capacity (RC). How long will it run? The resultant battery life is in unit hours (h). consume current in the low milliamperes (20ma-50mA), normal batteries will last hours and hours (50-100 hours), since normally batteries have a battery capacity range All batteries come with a battery capacity rating. quicker the battery becomes drained, since more current is being used. So calculating battery life is essential when building a circuit. Usually since electronic circuits usually A clickable product link will generate in the calculator based on the model/configuration you select. The amp hour rating on a battery measures the amount of charge a battery can hold, the larger the number, the longer it can power a motor. The less current which the load consumes, the longer the Therefore, if we use a less demanding load in a circuit, it will 100 Ah / 48 amps drawn = 2.08 hours of runtime. While only estimates, these can be very helpful in deciding on the right battery or motor for your application. If you are unable to find your battery, use the Live Chat to ask for help. Note that there are battery run-time calculators on the web that are very wrong. The resultant battery life is then calculated Two of the most common questions we receive are “How long will this motor run for?” and “How to calculate how long a battery will last?”. How long will my battery run. JavaScript seems to be disabled in your browser. The load current is the amount of current which the load of the circuit consumes; or, in other words, it is You must have JavaScript enabled in your browser to utilize the functionality of this website. The battery life is the amount of time, normally specified in hours, that a battery will last in a circuit. This is because battery life is

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). Example: 60.09 x 1000 / 14.8 = 4060 mAH (rounded down) Will a higher mAh battery rating negatively affect my laptop? This rating measures how long a battery can maintain a consistent amperage output. mAH rating of a battery. Kwh/mo. the amount of current being

Battery Life Calculator This battery life calculator estimates how long a battery will last, based on nominal battery capacity and the average current that a load is drawing from it. The battery life is the amount of time, normally specified in hours, that a battery will last in a circuit.

of current during its lifetime. Using a motor on lower speeds will increase battery life. A better estimate of this runtime can be achieved by dividing the max amp draw in half and using that answer in the equation. 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 speed The more current which the load or circuit consumes, the Lithium Battery Size: While only estimates, these can be very helpful in deciding on the right battery or motor for your application. since the product Battery capacity is typically measured in Amp-hours (Ah) or milliamp-hours (mAh), although Watt-hours (Wh) is … If we use a load which requires a great amount of power (in the form of current), the battery Video: 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. This means it can supply 20mA for 100 hours, 200mA for 10 hours, 2A for 1 hour, etc. We can estimate amp draw based off the pounds of thrust a trolling motor is rated for by rounding down to the nearest ten. To learn more in detail about battery capacity, see So the load current is inversely proportional to the battery life. This calculator will tell you how long your battery will run. Amperage draw describes the amount of electricity the motor pulls from the battery to power itself.

We use this unit for describing the capacity of a battery having a fixed voltage.A Watt-hour is a measure of energy stored in a battery. A device with a greater value of mAh will have a longer life. How Long Does A Trolling Motor Battery Last?

Enough of overstated battery lives. Battery life is of course very important in electronic circuit design.
to die after only an hour of use for an electronic gadget.

No. The battery will last 2 hours. How long a battery will last is determined by 2 factors, the battery capacity and the load current of the circuit. That page teaches how to take into account battery lifetime, Peukart effect, and end-of-life matters. 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 speed More easily put, how much charge the battery can hold and how long it can power an electronic device.

50 Ah / 52 amps drawn = .96 hours of runtime.
mAh = Whr x 1000 / Volts. This calculator will tell you how long your battery will run. Depending on the amount of load current needed for a circuit, how long the This will give you an estimated battery life for your trolling motor. will last is very important for consumer satisfaction. It is important because since the battery is the power source, it is battery power

Or if delivering 10A, it would last for only 1 hour, or if delivering 5A, it would last only for 2 hours. This battery life calculator calculates the battery life of a battery in a circuit. No one wants a battery You simply divide the RC by 2.4 to get an estimated amp hour rating. To use this calculator, a user enters the battery capacity and the current load, and clicks the 'Calculate' button. 624 watts draw / 12 volts = 52 amps drawn at top speed, 50 Ah / 52 amps drawn = .96 hours of runtime, 1,152 watts draw / 24 volts = 48 amps drawn at top speed, It should be noted that these are only estimates and they do not factor in weight, wind or water resistance or other external factors. Battery Bank Calculator. will be much shorter. It measures the amount of current a given battery can deliver for 30 seconds at zero (0) degrees Fahrenheit without dropping below a specified cutoff voltage.

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