22 Years' Battery Customization
Mar 01, 2022 Pageview：4834
From small portable energy storage systems to large-scale storage systems, energy storage applications have been on the rise. These listings typically measure and compare the amount of energy that the systems can store at a certain period. There are so many battery capacity measure units like Wh, mAh, Ah, and many more which can confuse you.
If you buy batteries often, you must have come across batteries listed in the watt-hours. It is important to understand that when you compare watt-hours, it is easy to compare the capacities of different batteries without paying attention to their voltage.
What Does WH Mean on a lithium battery?
(Wh) is an abbreviation for Watt-hour and is used to measure the capacity of any given battery in electrical applications. In simple terms, it describes a battery’s accumulated energy. If you are planning to travel with lithium batteries along, you need to be aware of their watt-hour rating. Back in 2015, shippers in the US changed the standard of expressing the energy of lithium-ion batteries from equivalent lithium content to watt-hours. Currently, shippers are only allowed to express battery power in watt-hours in the new shipping standards. A shipper must know the watt-hour rating of their batteries for:
Shipping safely
Determining their packaging
Labeling and marking them
Knowing the quantity limitations
Knowing whether the batteries are prohibited
It is easy to determine the watt-hours of a lithium battery because it is stated in the case of the battery itself. All newer lithium-ion batteries that were produced from December 31, 2011, have visible watt-hour ratings. If your battery is older and you cannot see the watt rating on the case, you can calculate it as (Volts by Amp-hours). You can also consider checking the product documentation sheet for the specifications of the battery. However, if it does not appear in any place on the document and you are still unable to calculate it, you can contact the manufacturer. Do not guess as the batteries can cause hazards, contact the manufacturer to get accurate information and to avoid paying violation fines. Remember, the latest regulatory requirements on the shipping of lithium-ion batteries do not allow for transporting batteries with no watt-hour ratings.
What Does WH Mean in Battery Life
Battery life is used to express the general measurements of a given battery's performance and longevity. You can estimate battery life as:
The battery’s run time after a full charge
The manufacturer’s milliampere-hours
The number of a battery’s charge cycles
To begin with, a battery contains an assembly of single cells connected along with the energy storage system so that the battery can function normally. Energy storage systems and batteries use either (AH) or (WH) to measure the energy that moves in and of the battery. These energy storage devices range from simple batteries like those in a kid’s toy to large systems like a laptop battery. Technically speaking, (AH) is often used for batteries, whereas (WH) is often used for energy storage systems. (WH) is a great tool for measuring conversion units in systems since users use numbers to find the existing relationships. Moreover, research has that Wh gives a more accurate measurement of the energy stored in a particular battery.
Note that the watt-hour is not a formal standard of measurement; it only applies to energy in electrical systems. You can calculate Wh by multiplying a battery's voltage with the number of Amps it can provide for certain hours (Voltage by Amps = Watts). For instance, a 14V100 means that the battery's voltage is 14 and its capacity is 100Ah, (14 by 100 = 1400Wh). Assuming you pumped water into a balloon, (WH) would measure the amount of effort and energy used to fill the balloon with water.
WH Battery Calculator
You may be probably wondering how long your brand new smartphone's battery is going to last; worry no more, the battery calculator will give you a realistic approximation of its watts hour. WH battery calculator is used to calculate watt-hour rating by using the information available on the specifications of the battery. It is quick and simple mathematics used frequently by lithium-ion battery users to know the hours that their batteries will run before discharging. You can use the WH battery calculator's default mode, which assumes that the battery will run up to the time of discharge, or you can use the advanced settings, which incorporate the sleep mode.
-The default mode calculator uses the following formula to calculate battery life:
Battery life = capacity/consumption by (1- discharge safety)
Where;
1.Capacity is measured in ampere-hours
2.Consumption is the device’s current expressed in amperes
3.Discharge safety is the capacity that is never used in a battery
-The advanced settings in a battery calculator calculates the battery time by basing on the following formula:
Average consumption = (consumption1 by time1 + consumption2 by time2) / (time1 + time2)
Where;
1.Consumption is the device’s current measured in amperes
2.Index 1 is the awake time of your device
3.Index 2 is the sleep time of your device
What you need to know to calculate the watt-hour rating of your battery manually:
The battery’s given voltage; usually abbreviated as (V)
The battery capacity in ampere-hours; usually abbreviated as (Ah)
Example 1: A 50 volt 500 Ah battery
To calculate this battery’s watts, multiply the amp hours by the volts as follows; 500Ah by 50 volts = 2500Wh
Sometimes your batteries capacity may be expressed in milliampere-hours (mAh). On such occasions, you need to divide the milliampere-hours by 1000 to get the Ampere hours. Milliampere-hour is the one-thousandth of an Ampere-hour. After this process, you can now proceed to multiplication.
Example 2: A 10.0 volt 2, 2000mAh battery
To calculate this battery’s volt, start by dividing the mAh rating by 1000 to get the Ah rating as follows; 2000 /1000= 2Ah. Proceed to calculate the watts as 2Ah by 10.0 volts = 0.5Wh
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